Transmission and controls

Claim 2

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a plurality of fluid operated drive devices including a main fluid operated forward drive establishing device and a first, intermediate and high individual speed fluid operated forward drive establishing devices sequentially operative when said main forward drive device is established to establish first, intermediate and high, a series of increasing speed forward drives and two of said fluid operated drive devices including at least one of said forward drive devices establishing an additional drive; a source of fluid under pressure; shift valve means including a first and second shift valve each having a supply port; said first shift valve operative in a downshift position for connecting its supply port to said first speed individual fluid operated speed drive establishing device and operative in an upshift position for connecting the supply port of said first shift valve to the supply port of said second shift valve; said second shift valve operative in a downshift position for connecting its supply port to establish said intermediate individual speed drive establishing device and operative in an upshift position for connecting its supply port to establish said high drive establishing device; automatic control means operative in response to output speed for sequentially upshifting said first and second shift valves with increasing output speed and selector valve means operative in an automatic position for connecting said source to said forward drive device and said supply port of said first shift valve for establishing automatic shifting between said first, intermediate and high forward drives and an additional drive position connecting said source to said shift valve means and to one of said two drive devices for said additional drive for establishing said one drive device and conditioning said shift valve means for supplying fluid for the other of said two drive devices for said additional drive, to establish said additional drive through said first shift valve only when placed in the downshifted position by said automatic control means.

Claim 3

The invention defined in claim 1 and said additional drive being a reverse drive; said one drive device for said additional drive being said high drive device and said selector valve means in said additional drive position connecting said source to said second shift valve to establish said high drive device and said other drive device for said additional drive being said first drive device.

Claim 4

The invention defined in claim 1 and said additional drive being a low drive; said one drive device for said additional drive being said main forward drive device and said other drive device for said additional drive being a low drive device.

Claim 5

The invention defined in claim 1 and said additional drive being a low drive; said other drive device for said additional drive being a low drive device; said shift valve means including an additional shifT valve and said first shift valve in said downshifted position connecting said source to said additional shift valve which selectively feeds said first drive device when said selector valve is in said automatic position and feeds said low drive device when said selector valve is in said additional position.

Claim 6

The invention defined in claim 4 and governor controlled inhibitor means connected to said additional shift valve means to prevent downshift of said additional shift valve means above a predetermined speed, a torque converter having an output and lockup clutch in series with said multispeed gear means between said output and input means, governor shift means responsive to the speed of said torque converter output only above a higher predetermined speed to engage said lockup clutch to prevent lockup clutch engagement in said low ratio.

Claim 7

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a plurality of fluid operated drive devices including a fluid operated main forward drive establishing device and a first, intermediate and high individual speed fluid operated forward drive establishing devices sequentially operative when said forward drive device is established to establish first, intermediate and high, a series of increasing speed forward drives and two of said fluid operated drive devices including at least one of said forward drive devices operative for establishing an additional drive; a source of fluid under pressure; relay valve means including a first and second relay valve each having a supply port; said first relay valve operative in a downshift position for connecting said source to said first speed individual fluid operated speed drive establishing device and operative in an upshift position for connecting the supply port of said first relay valve to the supply port of said second relay valve; said second relay valve operative in a downshift position for connecting its supply port to establish said intermediate individual speed drive establishing device and operative in an upshift position for connecting its supply port to establish said high drive establishing device; governor means providing a governor signal; automatic shift valves for each relay valve means each operative in response to said governor signal for sequentially each providing a shift signal for upshifting said first and second relay valves with increasing output speed and selector valve means operative in an automatic position for connecting said source to said main forward drive device and to said supply port of said first relay valve for establishing automatic shifting between said first, intermediate and high forward drives and an additional drive position connecting said source to said relay valve means and to one of said two drive devices for said additional drive for establishing said one drive device and conditioning said relay valve means for supplying fluid for establishing the other of said two drive devices for said additional drive to establish said additional drive through said first relay valve only when placed in the downshifted position by said automatic control means.

Claim 8

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a plurality of fluid operated drive devices including a fluid operated main forward drive establishing device and a first, intermediate and high individual speed fluid operated forward drive establishing devices sequentially operative when said forward drive device is established to establish first, intermediate and high, a series of increasing speed forward drives and two of said fluid operated drive devices including at least one of said forward drive devices operative for establishing an additional drive; a source of fluid under pressure; relay valve means including a first and second relay valve each having a supply port; said first relay valve operative in a downshift position for connecting said source to said first speed individual fluid operated speed drive establishing device and operative in an upshift position for connecting the supply port of said first relay valve to the supply port of said second relay valve; said second relay valve operative in a downshift position for connecting its supply port to establish said intermediate individual speed drive establishing device and operative in an upshift position for connecting its supply port to establish said high drive establishing device; governor means providing a governor signal; automatic shift valves for each relay valve means each operative in response to said governor signal for sequentially each providing a shift signal for upshifting said first and second relay valves with increasing output speed and selector valve means operative in an automatic position for connecting said source to said main forward drive device and to said supply port of said first relay valve for establishing automatic shifting between said first, intermediate and high forward drives and an additional drive position connecting said source to said relay valve means and to one of said two drive devices for said additional drive for establishing said one drive device and conditioning said relay valve means for supplying fluid for establishing the other of said two drive devices for said additional drive to establish said additional drive through said first relay valve only when placed in the downshifted position by said automatic control means.

Claim 9

The invention defined in claim 6 and said additional drive being a reverse drive; said one drive device for said additional drive being said high drive device and said selector valve means in said additional drive position for reverse drive connecting said source to said second relay valve to establish said high drive device and said other drive device for said additional drive being said first drive device.

Claim 10

The invention defined in claim 7 and said second relay when downshifted having an exhaust connected to the high establishing device; said selector valve means in reverse drive position connecting said source to said exhaust connected by the downshifted second relay valve to the high establishing device and to the supply port of said first relay valve for establishing said first drive device only on downshift of said firsT relay valve so reverse drive cannot be established above the speed for first drive.

Claim 11

The invention defined in claim 6 and said additional drive device being a low drive device; a low relay valve in the connection between said first relay valve normally in an upshift position providing a connection to said first device and in a downshift position to said low device; said selector valve means in said additional position connecting said source to said forward drive device and to said supply port of said first relay valve means and said source to said low relay valve to move it to downshift position to establish low only when said first relay valve is downshifted.

Claim 12

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a plurality of fluid operated drive establishing devices including a forward drive establishing device and a first, second and third individual fluid operated speed drive establishing devices sequentially operative when said forward drive device is established to establish a series of increasing speed forward drives; a source of fluid under pressure; a drive pressure line having priority means to delay fluid pressure flow therethrough; first and second shift valves; automatic shift means to sequentially upshift said first and second shift valves with increasing output speed; said first shift valve operative in a downshift position to provide a connection connecting said source to said first speed individual drive device for establishing said first speed device whenever the output is stationary or coasting at speeds less than the speed required to upshift said first shift valve and in an upshift position to connect said drive pressure line to a second of said shift valves; said second shift valve in a downshift position feeding said second drive device and in an upshift position feeding said third drive device; manual selector valve means operative in a neutral position connecting said drive pressure line to exhaust to prevent establishment of second and third speeds so said first speed device is only established when the output is stationary or coasting at speeds less than the speed required to upshift said first shift valve and an automatic drive position to connect said source to said drive pressure line and to said forward drive device for engaging said forward drive device for completing the drive when the vehicle is stationary or coasting at a speed less than the speed required to upshift said first shift valve and for first engaging said forward drive device and then engaging the one of second or third drive device when coasting at high speeds in accordance with the automatic shift means control of said second shift valve.

Claim 13

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a plurality of fluid operated drive establishing devices including a forward drive establishing device and a first, second and third individual fluid operated speed drive establishing devices sequentially operative when said forward drive device is established to establish a series of increasing speed forward drives; a source of fluid under pressure; a drive pressure line having priority means to delay fluid pressure flow therethrough; first and second shift valves; automatic shift means to sequentially upshift said first and second shift valves with increasing output speed; said first shift valve operative in a downshift position to provide a connection connecting said source to said first speed individual drive device for establishing said first speed device whenever the output is stationary or coasting at speeds less than the speed required to upshift said first shift valve and in an upshift position to connect said drive pressure line to a second of said shift valves; said second shift valve in a downshift position feeding said second drive device and in an upshift position feeding said third drive device; manual selector valve means operative in a neutral position connecting said drive pressure line to exhaust to prevent establishment of second and third speeds so said first speed device is only established when the output is stationary or coasting at speeds less than the speed required to upshift said first shift valve and an automatic drive position to connect said source to said drive pressure line and to said forward drive device for engaging said forward drive device for completing the drive when the vehicle is stationary or coasting at a speed less than the speed required to upshift said first shift valve and for first engaging said forward drive device and then engaging the one of second or third drive device when coasting at high speeds in accordance with the automatic shift means control of said second shift valve.

Claim 14

The invention defined in claim 10 and said priority means being a pressure responsive valve permitting flow therethrough in said drive pressure line when the upstream pressure is sufficient for proper operation of said individual fluid operated devices.

Claim 15

The invention defined in claim 10 and said multispeed gear means being operative on the establishment of said first and third speed drive establishing devices and the disestablishment of said forward drive device to establish reverse drive; said selector valve means being operative in a reverse position to exhaust said drive pressure line and connect said source pressure to said second shift valve to establish said third speed drive establishing device and reverse being established when said first shift valve automatically downshifts to establish said fluid operated device.

Claim 16

The invention defined in claim 11 and said multispeed gear means being operative on the establishment of said forward fluid operated device and an additional low speed fluid operated device to establish an additional low speed; an additional shift valve in said connection between said first shift valve and said first speed device having an upshift position providing a connection to said first speed device to establish first sPeed and a downshift position providing a connection to said lower speed device to establish said lower speed and said selector valve having a low position connecting said source to said forward drive device and acting on said additional low shift valve to downshift it.

Claim 17

The invention defined in claim 13 and governor means to prevent downshift of said additional low speed shift valve by said selector valve above a predetermined speed.

Claim 18

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a fluid operated forward drive establishing device and a plurality of individual fluid operated first through fourth speed drive establishing devices sequentially operative when said forward drive device is established to establish a series of increasing speed forward drives; a source of fluid under pressure; a plurality of shift valves including first, second and third shift valves each having a supply port; said first shift valve selectively connecting a first supply port to said first and second individual drive establishing devices when downshifted and upshifted respectively; said second shift valve selectively connecting said source to the supply port of said first shift valve and its second supply port to the supply port of said third shift valve when downshifted and upshifted respectively; said third shift valve connecting said third supply port selectively to a third and a fourth individual drive establishing device when downshifted and upshifted respectively; automatic control means responsive to the speed of said output means and torque demand operative to sequentially upshift and downshift said second and third shift valves and selector valve means operative in a forward automatic range position to connect said source to said forward drive establishing device and said supply port of said second shift valve and position said first shift valve for second drive and permitting automatic shifting of said second and third shift valves by said automatic control means and operative in a first drive position to discontinue the supply from said source to said supply port of said second shift valve to prevent the establishment of said third and fourth speed devices and position said first shift valve in the downshift position to establish said first drive establishing device.

Claim 19

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a fluid operated forward drive establishing device and a plurality of individual fluid operated first through fourth speed drive establishing devices sequentially operative when said forward drive device is established to establish a series of increasing speed forward drives; a source of fluid under pressure; a plurality of shift valves including first, second and third shift valves each having a supply port; said first shift valve selectively connecting a first supply port to said first and second individual drive establishing devices when downshifted and upshifted respectively; said second shift valve selectively connecting said source to the supply port of said first shift valve and its second supply port to the supply port of said third shift valve when downshifted and upshifted respectively; said third shift valve connecting said third supply port selectively to a third and a fourth individual drive establishing device when downshifted and upshifted respectively; automatic control means responsive to the speed of said output means and torque demand operative to sequentially upshift and downshift said second and third shift valves and selector valve means operative in a forward automatic range position to connect said source to said forward drive establishing device and said supply port of said second shift valve and position said first shift valve for second drive and permitting automatic shifting of said second and third shift valves by said automatic control means and operative in a first drive position to discontinue the supply from said source to said supply port of said second shift valve to prevent the establishment of said third and fourth speed devices and position said first shift valve in the downshift position to establish said first drive establishing device.

Claim 20

The invention defined in claim 15 and said multispeed gear means being operative on the establishment of said second and fourth speed drive establishing devices and the disestablishment of said forward drive establishing device to establish reverse drive; said manual selector valve means being movable to a reverse position exhausting said drive pressure line, connecting main line pressure to said third shift valve to establish said fourth drive establishing device and upshifting said first shift valve for operation on the automatic downshift of said second shift valve to directly connect said source to said first shift valve which in the upshift position establishes said second speed device which with the established fourth speed device provides reverse drive.

Claim 21

The invention defined in claim 16 and said automatic control means including an output governor providing an output governor signal, a torque demand means providing a signal proportional to torque demand and automatic shift valve means for each of said second and third shift valves operative in response to said governor signal and said torque demand signal to provide first and second upshift signal at low and high ranges of speeds increasing with torque demand and a discontinuance of said signal at low and high ranges of speeds increasing at a faster rate with torque demand and said shift valves being relay shift valves and said second and third relay valves being respectively responsive to said first and second upshift signals.

Claim 22

The invention defined in claim 16 and a hold pressure regulator valve providing a hold signal pressure and said selector valve connectIng said hold signal pressure to said first shift valve to downshift said first shift valve in said first drive position and having a second automatic range connecting said hold signal pressure to said automatic control means to provide upshifts of at least one shift valve at higher speeds.

Claim 23

In a transmission; input means; output means; multispeed gear means having low, first intermediate, second intermediate and high speed drive establishing devices connecting said input and output means; a source of fluid under pressure; a low, intermediate and high shift valve means each having an inlet port means, a low and a high outlet port and exhaust port means and biasing means biasing said shift valve means to low position connecting said inlet port means to said low outlet port and said high outlet port to said exhaust port means and having fluid pressure responsive means to shift said shift valve means to high position connecting said inlet port means to said high outlet port and said low outlet port to said exhaust port means; first passage means connecting said source to said inlet port means of said low shift valve means; second passage means connecting said low outlet port means of said low shift valve means to said low speed device; third passage means connecting said high outlet port of said low shift valve means to said inlet port means of said intermediate shift valve means; fourth passage means connecting said low outlet port of said intermediate shift valve means to said first intermediate speed device; fifth passage means connecting said high outlet port of said intermediate shift valve means to said inlet port means of said high shift valve means; sixth passage means connecting said low outlet port of said high shift valve means to said second intermediate speed device and seventh passage means connecting said high outlet port of said high shift valve means to said high speed device.

Claim 24

In a transmission; input means; output means; multispeed gear means having low, first intermediate, second intermediate and high speed drive establishing devices connecting said input and output means; a source of fluid under pressure; a low, intermediate and high shift valve means each having an inlet port means, a low and a high outlet port and exhaust port means and biasing means biasing said shift valve means to low position connecting said inlet port means to said low outlet port and said high outlet port to said exhaust port means and having fluid pressure responsive means to shift said shift valve means to high position connecting said inlet port means to said high outlet port and said low outlet port to said exhaust port means; first passage means connecting said source to said inlet port means of said low shift valve means; second passage means connecting said low outlet port means of said low shift valve means to said low speed device; third passage means connecting said high outlet port of said low shift valve means to said inlet port means of said intermediate shift valve means; fourth passage means connecting said low outlet port of said intermediate shift valve means to said first intermediate speed device; fifth passage means connecting said high outlet port of said intermediate shift valve means to said inlet port means of said high shift valve means; sixth passage means connecting said low outlet port of said high shift valve means to said second intermediate speed device and seventh passage means connecting said high outlet port of said high shift valve means to said high speed device.

Claim 25

The invention defined in claim 19 and said inlet port means including a high inlet port connecting said high outlet port when the shift valve means is in high position and a low inlet port connecting to said low outlet port when the shift valve means is in low position and each high inlet port having more restriction.

Claim 26

The invention defined in claim 20 and said low inlet port of said high shift valve means having a restriction.

Claim 27

The invention defined in claim 19 and said exhaust port means including a high exhaust port connected to said high outlet port when the shift valve means is in low position and a low exhaust port connected to said low outlet port when the shift valve means is in high position and said low exhaust port being more restricted.

Claim 28

The invention defined in claim 20 and said exhaust port means including a high exhaust port connected to said high outlet port when the shift valve means is in low position and a low exhaust port connected to said low outlet port when the shift valve means is in high position and said low exhaust port being more restricted.

Claim 29

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a fluid actuated forward drive establishing device actuated in all forward drives and a plurality of fluid actuated individual speed drive devices individually actuated to provide when the forward drive device is actuated a series of forward speed drives; a source of fluid under a regulated pressure; governor means connected to said source and providing a governor pressure proportional to transmission speed; automatic shift valve means responsive to said governor pressure to sequentially upshift for sequentially engaging said individual fluid actuated forward speed drive devices; priority valve means operative in response to normal pressure to permit flow of the normal pressure and in response to less than normal pressure to reduce flow; and manual control means connecting said source directly to said fluid actuated forward drive device and through said priority valve meAns to said automatic shift valve means so the source pressure is maintained at said normal pressure in order to maintain proper system pressures.

Claim 30

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having a fluid actuated forward drive establishing device actuated in all forward drives and a plurality of fluid actuated individual speed drive devices individually actuated to provide when the forward drive device is actuated a series of forward speed drives; a source of fluid under a regulated pressure; governor means connected to said source and providing a governor pressure proportional to transmission speed; automatic shift valve means responsive to said governor pressure to sequentially upshift for sequentially engaging said individual fluid actuated forward speed drive devices; priority valve means operative in response to normal pressure to permit flow of the normal pressure and in response to less than normal pressure to reduce flow; and manual control means connecting said source directly to said fluid actuated forward drive device and through said priority valve meAns to said automatic shift valve means so the source pressure is maintained at said normal pressure in order to maintain proper system pressures.

Claim 31

The invention defined in claim 24 and an additional fluid actuated individual speed drive device; an additional shift valve operative in one position to supply said additional speed drive device and in another position to supply one of said individual speed drive devices; said automatic shift valve means in one position being connected through said additional shift valve means to supply fluid from said source to selectively actuate said additional fluid actuated device and said one of said individual speed drive devices and said manual control means connecting said source pressure to said additional shift valve to select said additional and said one fluid actuated speed drive devices.

Claim 32

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having a first and a second inlet port, a first and a second outlet port and exhaust port means; said first shift valve means having both inlet ports connected to said source and said first outlet port connected to said first speed drive device and operative in a downshift position to connect its first inlet port to its first outlet port and in an upshift position to connect its second inlet port to its second outlet port, and said second shift valve means having both of its inlet ports connected to said second outlet port of said first shift valve means, its first outlet port connected to said second speed drive device and its second outlet port connected to said third speed drive device and being operative in a downshift position to connect its first inlet port to its first outlet port connected to said second speed drive device and in an upshift position to connect its second inlet port to its second outlet port connected to said third speed drive device, said first inlet port of said first shift valve means having a flow capacity controlling only the flow for said first speed drive device; said first inlet port of said second shift valve having a flow capacity controlling only the flow for said second speed drive device and said second inlet port of said second shift valve having a flow capacity controlling only the flow for said third speed drive device.

Claim 33

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having a first and a second inlet port, a first and a second outlet port and exhaust port means; said first shift valve means having both inlet ports connected to said source and said first outlet port connected to said first speed drive device and operative in a downshift position to connect its first inlet port to its first outlet port and in an upshift position to connect its second inlet port to its second outlet port, and said second shift valve means having both of its inlet ports connected to said second outlet port of said first shift valve means, its first outlet port connected to said second speed drive device and its second outlet port connected to said third speed drive device and being operative in a downshift position to connect its first inlet port to its first outlet port connected to said second speed drive device and in an upshift position to connect its second inlet port to its second outlet port connected to said third speed drive device, said first inlet port of said first shift valve means having a flow capacity controlling only the flow for said first speed drive device; said first inlet port of said second shift valve having a flow capacity controlling only the flow for said second speed drive device and said second inlet port of said second shift valve having a flow capacity controlling only the flow for said third speed drive device.

Claim 34

The invention defined in claim 26 and said first shift valve means having exhaust port means including a first exhaust port for controlling the flow capacity of only the connection of said first speed drive device to exhaust after moving from the downshift position to the upshift position.

Claim 35

The invention defined in claim 26 and said second shift valve means having exhaust port means including a first exhaust port for controlling the flow capacity of only the connection of said second speed drive device to exhaust after moving from the downshift position to the upshift position.

Claim 36

The invention defined in claim 26 and said second shift valve means having exhaust port means including a second exhaust port controlling the flow capacity of only the connection of said third speed drive device to exhaust after moving from the upshift position to the downshift position.

Claim 37

In a transmission; input means; output means; multispeed gear means connecting said input means and output means and having in a consecutive speed drive series first, second and third increasing speed drive establishing devices; a source of fluid under pressure; shift valve means selectively connecting said source to said first, second and third devices having feed passages for feed flow for selectively establishing the respective first, second and third speed device, a first and a second flow controlling upshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said first and second device duriNg upshifts from first to second and second to third speeds and a second and a third flow controlling downshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said second and third device during downshifts from third to second and second to first speeds; each upshift and downshift flow controlling exhaust passage portion being independent of the other flow controlling upshift and downshift exhaust passage portions.

Claim 38

In a transmission; input means; output means; multispeed gear means connecting said input means and output means and having in a consecutive speed drive series first, second and third increasing speed drive establishing devices; a source of fluid under pressure; shift valve means selectively connecting said source to said first, second and third devices having feed passages for feed flow for selectively establishing the respective first, second and third speed device, a first and a second flow controlling upshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said first and second device duriNg upshifts from first to second and second to third speeds and a second and a third flow controlling downshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said second and third device during downshifts from third to second and second to first speeds; each upshift and downshift flow controlling exhaust passage portion being independent of the other flow controlling upshift and downshift exhaust passage portions.

Claim 39

The invention defined in claim 30 and each of said flow controlling upshift exhaust passage portions being more restricted than the flow controlling downshift exhaust passage portion for the same speed device providing a slower disestablishment rate on upshift than on downshift.

Claim 40

The invention defined in claim 30 and said flow controlling upshift and downshift exhaust passage portions being independent of said feed passages.

Claim 41

In a transmission; input means; output means; multispeed gear means connecting said input means and output means and having in a consecutive speed drive series first, second and third increasing speed drive establishing devices; a source of fluid under pressure; shift valve means selectively connecting said source to said first, second and third devices having a first, a second and a third flow controlling feed passage portions, each only for feed flow to and for establishing the respective first, second and third device for providing a controlled establishing rate for each device independent of the establishing rate of the other devices, a first and a second flow controlling upshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said first and second device during upshifts from first to second and second to third speeds and a second and a third flow controlling downshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said second and third device during downshifts from third to second and second to first speeds; each upshift and downshift flow controlling exhaust passage portion being independent of the other flow controlling upshift and downshift exhaust passage portions and said flow controlling feed passage portions, each of said flow controlling upshift exhaust passage portions being more restricted than the flow controlling downshift exhaust passage portion for the same speed device providing a slower disestablishment rate on upshift than on downshift and said flow controlling feed passage portions being independent of said flow controlling upshift and downshift exhaust passage portions.

Claim 42

In a transmission; input means; output means; multispeed gear means connecting said input means and output means and having in a consecutive speed drive series first, second and third increasing speed drive establishing devices; a source of fluid under pressure; shift valve means selectively connecting said source to said first, second and third devices having a first, a second and a third flow controlling feed passage portions, each only for feed flow to and for establishing the respective first, second and third device for providing a controlled establishing rate for each device independent of the establishing rate of the other devices, a first and a second flow controlling upshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said first and second device during upshifts from first to second and second to third speeds and a second and a third flow controlling downshift exhaust passage portions, each only for exhaust flow for disestablishing respectively said second and third device during downshifts from third to second and second to first speeds; each upshift and downshift flow controlling exhaust passage portion being independent of the other flow controlling upshift and downshift exhaust passage portions and said flow controlling feed passage portions, each of said flow controlling upshift exhaust passage portions being more restricted than the flow controlling downshift exhaust passage portion for the same speed device providing a slower disestablishment rate on upshift than on downshift and said flow controlling feed passage portions being independent of said flow controlling upshift and downshift exhaust passage portions.

Claim 43

The invention defined in claim 33 and said first, second and third flow controlling feed passage portions being more restricted than said flow controlling downshift exhaust passage portions.

Claim 44

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in consecutive series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having inlet passage means, a first and a second outlet passage and exhaust passage means; said first shift valve means having its inlet passage means connected to said source and its first outlet passage connected to said first speed drive device and operative in a downshift position to connect its inlet passage means to its first outlet passage to feed and establish said first speed device and connect its second outlet passage to its exhaust passage means and in an upshift position to connect its inlet passage means for feed flow to its second outlet passage and its first outlet passage to its exhaust passage means to exhaust and disestablish said first speed device, and said second shift valve means having inlet passage means having a first restricted inlet passage with a bypass blocking feed flow and permitting return flow and a second restricted inlet passage, both connected to said second outlet passage of said first shift valve means, its first outlet passage connected to said second speed drive device and its second outlet passage connected to said third speed drive device and being operative in a downshift position to connect its first restricted inlet passage to its first outlet passage connected, when said first shift valve means is upshifted for feed to and for establishing said second speed drive device and, when said first shift valve means is downshifted for exhausting through its first restricted inlet passage and its bypass to the second outlet passage and exhaust passage means of said first shift valve means and connecting said third speed drive device to its exhaust passage means and in an upshift position to connect its second restricted inlet passage to its second outlet passage for feed to said third speed drive device and connecting said second speed drive device by its first outlet passage to its exhaust passage means and said first inlet passage of said second shift valve having a flow capacity controlling only the feed flow for said second speed drive device and said second inlet passage of said second shift valve having a flow capacity controlling only the flow for said third speed drive device.

Claim 45

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in consecutive series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having inlet passage means, a first and a second outlet passage and exhaust passage means; said first shift valve means having its inlet passage means connected to said source and its first outlet passage connected to said first speed drive device and operative in a downshift position to connect its inlet passage means to its first outlet passage to feed and establish said first speed device and connect its second outlet passage to its exhaust passage means and in an upshift position to connect its inlet passage means for feed flow to its second outlet passage and its first outlet passage to its exhaust passage means to exhaust and disestablish said first speed device, and said second shift valve means having inlet passage means having a first restricted inlet passage with a bypass blocking feed flow and permitting return flow and a second restricted inlet passage, both connected to said second outlet passage of said first shift valve means, its first outlet passage connected to said second speed drive device and its second outlet passage connected to said third speed drive device and being operative in a downshift position to connect its first restricted inlet passage to its first outlet passage connected, when said first shift valve means is upshifted for feed to and for establishing said second speed drive device and, when said first shift valve means is downshifted for exhausting through its first restricted inlet passage and its bypass to the second outlet passage and exhaust passage means of said first shift valve means and connecting said third speed drive device to its exhaust passage means and in an upshift position to connect its second restricted inlet passage to its second outlet passage for feed to said third speed drive device and connecting said second speed drive device by its first outlet passage to its exhaust passage means and said first inlet passage of said second shift valve having a flow capacity controlling only the feed flow for said second speed drive device and said second inlet passage of said second shift valve having a flow capacity controlling only the flow for said third speed drive device.

Claim 46

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in consecutive series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having first and second inlet passages, outlet passages and exhaust flow control passages; said first shift valve means having its first and second inlet passages connected to said source and its first outlet passage connected to said first speed drive device and operative in a downshift position to connect its first inlet passage, which has a flow control portion only for first speed establishment, to its first outlet passage to feed and establish said first speed device and connect its second outlet passage to its second exhaust flow control passage, to control only second speed disengaging exhaust on a second first shift, and in an upshift position to connect its second inlet passage for feed flow to its second outlet passage and its first outlet passage to its first exhaust flow control passage to control only first speed disengaging exhaust on a first second shift; and said second shift valve means having its first and second inlet passages, both connected to said second outlet passage of said first shift valve means, having respectively first and second flow control portions only for second and third speed establishment, said first flow control portion having a bypass blocking feed flow and permitting return flow, its first outlet passage connected to said second speed drive device and its second outlet passage connected to said third speed drive device and being operative in a downshift position to connect its second outlet to its second exhaust flow control passage to control only third sped exhaust on a three two shift, its first inlet passage, when the first shift valve means is upshifted, for feed to its first outlet passage for feed to establish said second speed drive device and, when said first shift valve means is downshifted for exhausting said second speed device through said bypass and first inlet passage of said second shift valve means to the second outlet and second exhaust flow control passage, of said first shift valve means to control only second speed exhaust on a second first shift, and in an upshift position to connect its second inlet passage to its second outlet passage for feed to said third speed drive device and connecting said second speed drive device by its first outlet passage to its first exhaust flow control passage only for second speed exhaust on a two three shift, the first inlet passage flow control portions of said first and second shift valve means and the second inlet passage flow control portion of said second shift valve respectively controlling only the feed Flow for establishing said first, second and third speed drives, said first and second exhaust flow control passages of said first shift valve means controlling respectively only exhaust flow for disestablishing said first speed drive on a first to second shift and for disestablishing second speed drive on a two one shift, the first and second exhaust flow control passages of said second shift valve means controlling respectively only exhaust flow for disestablishing said second speed drive on a second to third shift and for disestablishing said third speed drive on a three two shift.

Claim 47

In a transmission; input means; output means; multispeed gear means connecting said input and output means and having in consecutive series a first, second and third increasing speed drive establishing devices; a source of fluid under pressure; first and second shift valve means each having first and second inlet passages, outlet passages and exhaust flow control passages; said first shift valve means having its first and second inlet passages connected to said source and its first outlet passage connected to said first speed drive device and operative in a downshift position to connect its first inlet passage, which has a flow control portion only for first speed establishment, to its first outlet passage to feed and establish said first speed device and connect its second outlet passage to its second exhaust flow control passage, to control only second speed disengaging exhaust on a second first shift, and in an upshift position to connect its second inlet passage for feed flow to its second outlet passage and its first outlet passage to its first exhaust flow control passage to control only first speed disengaging exhaust on a first second shift; and said second shift valve means having its first and second inlet passages, both connected to said second outlet passage of said first shift valve means, having respectively first and second flow control portions only for second and third speed establishment, said first flow control portion having a bypass blocking feed flow and permitting return flow, its first outlet passage connected to said second speed drive device and its second outlet passage connected to said third speed drive device and being operative in a downshift position to connect its second outlet to its second exhaust flow control passage to control only third sped exhaust on a three two shift, its first inlet passage, when the first shift valve means is upshifted, for feed to its first outlet passage for feed to establish said second speed drive device and, when said first shift valve means is downshifted for exhausting said second speed device through said bypass and first inlet passage of said second shift valve means to the second outlet and second exhaust flow control passage, of said first shift valve means to control only second speed exhaust on a second first shift, and in an upshift position to connect its second inlet passage to its second outlet passage for feed to said third speed drive device and connecting said second speed drive device by its first outlet passage to its first exhaust flow control passage only for second speed exhaust on a two three shift, the first inlet passage flow control portions of said first and second shift valve means and the second inlet passage flow control portion of said second shift valve respectively controlling only the feed Flow for establishing said first, second and third speed drives, said first and second exhaust flow control passages of said first shift valve means controlling respectively only exhaust flow for disestablishing said first speed drive on a first to second shift and for disestablishing second speed drive on a two one shift, the first and second exhaust flow control passages of said second shift valve means controlling respectively only exhaust flow for disestablishing said second speed drive on a second to third shift and for disestablishing said third speed drive on a three two shift.