Transmission control valve

Claim 2

A control valve for supply pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with a plurality of conduits leading from said bore and a valve spool longitudinally movable in said bore, the improvement of said conduits respectively communicating with said bore at isolated points, a pressured fluid source, and means defining a flow path from one end of said valve spool, said source being connected to said flow path at said end of said spool for simultaneously supplying pressured fluid to two of said conduits.

Claim 3

A control valve as defined in claim 1, in which said flow path includes first means defining an axial first opening terminating at an inner end intermediate opposite ends of said valve spool and second means defining a second opening in said valve spool angularly related to said first opening and communicating therewith, said second opening merging with the surface of said spool at circumferentially spaced points.

Claim 4

A control valve As defined in claim 2, including the further improvement of said second opening extending perpendicular to the axis of said valve spool with said at least two conduits communicating with said bore at transversely aligned points.

Claim 5

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with at least of conduits leading from said bore, one of said conduits communicating with one side of said bore and said second and third conduits communicating at longitudinally spaced points on an opposite side of said bore; means defining an elongated recess on said one side and communicating with said first conduit, said recess having opposite ends substantially in transverse alignment with the respective second and third conduits; a valve spool longitudinally movable within said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source for simultaneously supply pressured fluid to two of said conduits, said flow path having a transversely extending opening defining outlets on opposite sides of said spool, one of said outlets aligned with said recess and the other of said outlets aligned with said second and third conduits whereby axial shifting of said valve spool will simultaneously supply pressured fluid to two of said conduits.

Claim 6

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with at least of conduits leading from said bore, one of said conduits communicating with one side of said bore and said second and third conduits communicating at longitudinally spaced points on an opposite side of said bore; means defining an elongated recess on said one side and communicating with said first conduit, said recess having opposite ends substantially in transverse alignment with the respective second and third conduits; a valve spool longitudinally movable within said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source for simultaneously supply pressured fluid to two of said conduits, said flow path having a transversely extending opening defining outlets on opposite sides of said spool, one of said outlets aligned with said recess and the other of said outlets aligned with said second and third conduits whereby axial shifting of said valve spool will simultaneously supply pressured fluid to two of said conduits.

Claim 7

A control valve as defined in claim 4, including the further improvement of a reservoir, and means defining a second flow path in said valve spool and communicating with said reservoir, said second flow path having axially spaced ports on said valve spool whereby to connect the third of said conduits to said reservoir while pressured fluid is being supplied to two of said conduits.

Claim 8

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with six conduits leading from said bore, a first group of four conduits communicating with said bore at longitudinally aligned, spaced points, a second group of two conduits communicating with said bore at longitudinally aligned, spaced points and spaced from the communication of said four conduits; a valve spool longitudinally movable in said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source, said flow path having spaced outlets on said valve spool respectively aligned with said groups to simultaneously supply pressured fluid to at least one conduit of each of said groups.

Claim 9

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with six conduits leading from said bore, a first group of four conduits communicating with said bore at longitudinally aligned, spaced points, a second group of two conduits communicating with said bore at longitudinally aligned, spaced points and spaced from the communication of said four conduits; a valve spool longitudinally movable in said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source, said flow path having spaced outlets on said valve spool respectively aligned with said groups to simultaneously supply pressured fluid to at least one conduit of each of said groups.

Claim 10

A control valve as defined in claim 6, including the further improvement of a reservoir and longitudinal conduit means defining in said spool and connected to said reservoir, said conduit means having a plurality of outlets located on the exterior of said valve spool to connect at least one conduit of each group to said reservoir while another of said conduits is connected to said source.

Claim 11

A control valve as defined in claim 7, and wherein said valve bore and spool are circular, and said valve spool includes a plurality of engaged positions the further improvement of said first and second group of conduits being diametrically opposed, said flow path comprising an axial first opening and a transversely extending second opening defining diametrically opposed outlets, one of said outlets communicating with a conduit of said first group in any one of said engaged positions and means defined on one of said bores and valve spool for connecting each conduit of said second group to the associated outlet during a plurality of engaged positions of said valve spool.

Claim 12

In a hydraulic control circuit for selectively supplying pressured fluid to a plurality of fluid operated devices and including pressured fluid source, a reservoir, a valve chamber having a valve spool axially slidable therein and a plurality of conduits connecting said chamber to said devices, the improvements of said conduits arranged in groups with each group in isolated commuNication with said chamber, first conduit means in said valve spool and connected to said source with an exit on said valve spool for each group of conduits, and means defining second conduit means in said valve spool and connected to said reservoir, said second conduit means having a plurality of outlets for each group whereby shifting of said valve spool will selectively supply pressured fluid to one of said conduits of each group and connect at least one of the conduits of each group to said reservoir.

Claim 13

In a hydraulic control circuit for selectively supplying pressured fluid to a plurality of fluid operated devices and including pressured fluid source, a reservoir, a valve chamber having a valve spool axially slidable therein and a plurality of conduits connecting said chamber to said devices, the improvements of said conduits arranged in groups with each group in isolated commuNication with said chamber, first conduit means in said valve spool and connected to said source with an exit on said valve spool for each group of conduits, and means defining second conduit means in said valve spool and connected to said reservoir, said second conduit means having a plurality of outlets for each group whereby shifting of said valve spool will selectively supply pressured fluid to one of said conduits of each group and connect at least one of the conduits of each group to said reservoir.

Claim 14

A hydraulic control circuit as defined in claim 9, including the further improvement of said first conduit means including an axially extending bore in said spool with transversely extending openings communicating with said bore and respectively aligned with one of said groups of conduits and said second conduit means includes a second axially extending bore isolated from said first bore and having transversely extending outlets for each group equal in number to the number of conduits in each group.

Claim 15

A hydraulic control circuit as defined in claim 9, and wherein said valve spool has a plurality of engaged positions, the further improvement of means on one of said valve spool and chamber for connecting one exit to each of the conduits of one of said groups in a plurality of engaged positions of said spool.

Claim 16

A hydraulic control circuit as defined in claim 9, including the further improvement of said groups comprising first and second groups of conduits in diametrically opposed communication with said chamber with conduits of each group having communication with said chamber at axially spaced and circumferentially aligned points and said first conduit means includes means defining a transverse opening through said spool and an elongated opening in said spool communicating with said source and said transverse opening.

Claim 17

A hydraulic control circuit as defined in claim 9, including the further improvement of a plurality of further conduits intersecting said valve chamber at axially spaced points, and means defining a transverse opening in said valve spool and selectively providing communication in respective ones of said further conduits when said valve spool is in predetermined conditions.

Claim 18

A hydraulic control circuit for selectively supplying pressured fluid to a plurality of fluid operated devices and including a valve spool slidably in a valve chamber and movable to a plurality of positions, at least first, second and third conduits leading from said valve chamber, a pressured fluid source and a reservoir, the improvement of means defining first and second fluid flow paths in said valve spool with said source and reservoir connected to respective flow paths, said first flow path having spaced exits on the peripheral surface of said valve spool, said first conduit communicating with one of said exits while said valve spool is in two of said positions and said second and third conduits respectively communicating with another of said exits and with said second flow path when said valve spool is in either of said two positions whereby to simultaneously selectively supply pressured fluid to two of said conduits and connect a third of said conduits to said reservoir.

Claim 19

A hydraulic control circuit for selectively supplying pressured fluid to a plurality of fluid operated devices and including a valve spool slidably in a valve chamber and movable to a plurality of positions, at least first, second and third conduits leading from said valve chamber, a pressured fluid source and a reservoir, the improvement of means defining first and second fluid flow paths in said valve spool with said source and reservoir connected to respective flow paths, said first flow path having spaced exits on the peripheral surface of said valve spool, said first conduit communicating with one of said exits while said valve spool is in two of said positions and said second and third conduits respectively communicating with another of said exits and with said second flow path when said valve spool is in either of said two positions whereby to simultaneously selectively supply pressured fluid to two of said conduits and connect a third of said conduits to said reservoir.

Claim 20

A hydraulic control circuit as defined in claim 14, and wherein said system selectively supplies pressured fluid to at least four fluid operated devices with said first, second, and third conduits each connected to a fluid operated device, the improvement of fourth conduit connected to said fourth fluid operated device with said first and fourth conduits communicating with said chamber at axially spaced points and in circumferential alignment and said second and third conduits respectively having a plurality of branch conduits with all said branch conduits axially spaced from each other and communicating with said valve chamber at axially spaced points and diametrically opposed from said first conduit.

Claim 21

A hydraulic control circuit as defined in claim 14, including the furtheR improvement of means cooperating with said valve chamber and valve spool for maintaining said valve spool in oriented position with respect to said valve chamber.

Claim 22

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with at least three conduits leading from said bore, one of said conduits communicating with one side of said bore and said second and third conduits communicating at longitudinally spaced points on an opposite side of said bore; means defining an elongated recess on said one side and communicating with said first conduit, said recess having opposite ends substantially in transverse alignment with the respective second and third conduits; a valve spool longitudinally movable within said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source for simultaneously supply pressured fluid to two of said conduits, said flow path having a transversely extending opening defining outlets on opposite sides of said spool, one of said outlets aligned with said recess and the other of said outlets aligned with said second and third conduits whereby axial shifting of said valve spool will simultaneously supply pressured fluid to two of said conduits.

Claim 23

A control valve for supplying pressured fluid to a plurality of fluid conduits and comprising a valve housing having an elongated valve bore therein with at least three conduits leading from said bore, one of said conduits communicating with one side of said bore and said second and third conduits communicating at longitudinally spaced points on an opposite side of said bore; means defining an elongated recess on said one side and communicating with said first conduit, said recess having opposite ends substantially in transverse alignment with the respective second and third conduits; a valve spool longitudinally movable within said bore; a pressured fluid source; and means defining a flow path in said valve spool and connected to said source for simultaneously supply pressured fluid to two of said conduits, said flow path having a transversely extending opening defining outlets on opposite sides of said spool, one of said outlets aligned with said recess and the other of said outlets aligned with said second and third conduits whereby axial shifting of said valve spool will simultaneously supply pressured fluid to two of said conduits.