US3647322A — Device for controlling quantities which are defin…

Claim 1

Independent Claim 294 words

In an apparatus for controlling a device which is responsive to two variables to adjust the operation of the device so that the product of the two variables is a constant and having first actuating means responsive to one of the variables and second actuating means connected to the device to adjust the operation of the device, the improvement comprising: lever means mounted for pivotal movement about a point; a first rod having two ends, one of said ends slideably engaging said lever means for movement of the rod end along the lever means; first guide means slideably engaging said first rod and holding said rod at a fixed angular position with respect to the pivot point of said lever means while permitting longitudinal movement of the rod in the guide means; a second rod having two ends, with one of its ends slideably engaging said lever means for movement of said one end of the second rod means along the lever means; and second guide means slideably engaging said second rod and holding said second rod at a fixed angular position with respect to the pivot point of said lever means while permitting longitudinal movement of the second rod in the second guide means; said guide means being so positioned with respect to said lever means that with a given longitudinal movement of the first rod, the second rod will move longitudinally an amount that is inversely proportionate to the movement of the first rod; said first actuating means being connected to said first rod to move said rod and lever means in response to changes in said one variable; said second actuating means being connected to said second rod to adjust said device in response to the movement of said second rod.

Claim 2

Dependent Claim 294 words

In an apparatus for controlling a device which is responsive to two variables to adjust the operation of the device so that the product of the two variables is a constant and having first actuating means responsive to one of the variables and second actuating means connected to the device to adjust the operation of the device, the improvement comprising: lever means mounted for pivotal movement about a point; a first rod having two ends, one of said ends slideably engaging said lever means for movement of the rod end along the lever means; first guide means slideably engaging said first rod and holding said rod at a fixed angular position with respect to the pivot point of said lever means while permitting longitudinal movement of the rod in the guide means; a second rod having two ends, with one of its ends slideably engaging said lever means for movement of said one end of the second rod means along the lever means; and second guide means slideably engaging said second rod and holding said second rod at a fixed angular position with respect to the pivot point of said lever means while permitting longitudinal movement of the second rod in the second guide means; said guide means being so positioned with respect to said lever means that with a given longitudinal movement of the first rod, the second rod will move longitudinally an amount that is inversely proportionate to the movement of the first rod; said first actuating means being connected to said first rod to move said rod and lever means in response to changes in said one variable; said second actuating means being connected to said second rod to adjust said device in response to the movement of said second rod.

Claim 3

Dependent Claim 29 words

In an apparatus as set forth in claim 1, wherein said second actuating means adjusts said device with auxiliary force and applies no significant loading to said second rod.

Claim 4

Dependent Claim 63 words

In an apparatus as set forth in claim 2, including means for adjusting the space between the point and at least one guide means as measured along a line between the point and the guide means, said line being angularly disposed with respect to said lever means, to thereby change the proportion of movement of the second rod with respect to the first.

Claim 5

Dependent Claim 48 words

In an apparatus as set forth in claim 3, wherein said lever means comprising a first and a second lever separated by a predetermined angle and fixedly connected to each other, said first rod slideably engaging said first lever, and said second rod slideably engaging said second lever.

Claim 6

Dependent Claim 39 words

In an apparatus as set forth in claim 4, wherein said device is to be controlled in accordance with a coordinate system having a coordinate system angle, said predetermined angle being the 180* complement of the coordinate system angle.

Claim 7

Dependent Claim 73 words

In an apparatus as set forth in claim 5, wherein said device comprises a hydraulic piston pump with adjusting means to control the length of the piston stroke, said pump having an output, said first actuating means being pressure responsive and being connected to the output of the pump to position the first rod in response to the pressure output of the pump, said second actuating means being connected to said adjusting means.

Claim 8

Dependent Claim 131 words

In an apparatus as set forth in claim 6, wherein said second actuating means adjusts said device without imposing any significant load on said second rod and includes: a main cylinder having a closed end, a fluid pressure port at a side of said cylinder and a fluid outpUt port at said closed end; a main piston in said cylinder and having a cylinder cavity therein and fluid channel means communicating with said cavity, with the main cylinder at the side of the piston corresponding to said side of the main cylinder and with the main cylinder at the closed end thereof; spring means resiliently urging said main piston toward the closed end of the main cylinder; and a pilot piston in said cylinder cavity and connected to said second rod.

Claim 9

Dependent Claim 137 words

In an apparatus as set forth in claim 7 for use with a fluid pressure source and wherein said second actuating means includes: a movably mounted second cylinder; a piston in said second cylinder and having a fixedly mounted piston rod extending through one end of said second cylinder, said piston thereby dividing said second cylinder into a first chamber wherein said piston has a comparatively large pressure face and a second chamber wherein said piston has a comparatively small pressure face; means connecting said second cylinder to said adjusting means; and control slide valve means connected to said output port to be urged in one direction by fluid pressure from said main cylinder and resiliently connected to said second cylinder to be urged in the other direction in accordance with the position of said second cylinder.

Claim 10

Dependent Claim 73 words

In an apparatus as set forth in claim 1, wherein said device comprises a hydraulic piston pump with adjusting means to control the length of the piston stroke, said pump having an output, said first actuating means being pressure responsive and being connected to the output of the pump to position the first rod in response to the pressure output of the pump, said second actuating means being connected to said adjusting means.

Claim 11

Dependent Claim 131 words

In an apparatus as set forth in claim 9, wherein said second actuating means adjusts said device without imposing any significant load on said second rod and includes: a main cylinder having a closed end, a fluid pressure port at a side of said cylinder and a fluid output port at said closed end; a main piston in said cylinder and having a cylinder cavity therein and fluid channel means communicating with said cavity, with the main cylinder at the side of the piston corresponding to said side of the main cylinder and with the main cylinder at the closed end thereof; spring means resiliently urging said main piston toward the closed end of the main cylinder; and a pilot piston in said cylinder cavity and connected to said second rod.

Claim 12

Dependent Claim 137 words

In an apparatus as set forth in claim 10 for use with a fluid pressure source and wherein said second actuating means includes: a movably mounted second cylinder; a piston in said second cylinder and having a fixedly mounted piston rod extending through one end of said second cylinder, said piston thereby dividing said second cylinder into a first chamber wherein said piston has a comparatively large pressure face and a second chamber wherein said piston has a comparatively small pressure face; means connecting said second cylinder to said adjusting means; and control slide valve means connected to said output port to be urged in one direction by fluid pressure from said main cylinder and resiliently connected to said second cylinder to be urged in the other direction in accordance with the position of said second cylinder.

Claim 13

Dependent Claim 131 words

In an apparatus as set forth in claim 1, wherein said second actuating means adjusts said device without imposing any significant load on said second rod and includes: a main cylinder having a closed end, a fluid pressure port at a side of said cylinder and a fluid output port at said closed end; a main piston in said cylinder and having a cylinder cavity therein and fluid channel means communicating with said cavity, with the main cylinder at the side of the piston corresponding to said side of the main cylinder and with the main cylinder at the closed end thereof; spring means resiliently urging said main piston toward the closed end of the main cylinder; and a pilot piston in said cylinder cavity and connected to said second rod.

Claim 14

Dependent Claim 137 words

In an apparatus as set forth in claim 12 for use with a fluid pressure source and wherein said second actuating means includes: a movably mounted second cylinder; a piston in said second cylinder and having a fixedly mounted piston rod extending through one end of said second cylinder, said piston thereby dividing said second cylinder into a first chamber wherein said piston has a comparatively large pressure face and a second chamber wherein said piston has a comparatively small pressure face; means connecting said second cylinder to said adjusting means; and control slide valve means connected to said output port to be urged in one direction by fluid pressure from said main cylinder and resiliently connected to said second cylinder to be urged in the other direction in accordance with the position of said second cylinder.

Claim 15

Dependent Claim 48 words

In an apparatus as set forth in claim 1, wherein said lever means comprising a first and a second lever separated by a predetermined angle and fixedly connected to each other, said first rod slideably engaging said first lever, and said second rod slideably engaging said second lever.

Claim 16

Dependent Claim 39 words

In an apparatus as set forth in claim 14, wherein said device is to be controlled in accordance with a coordinate system having a coordinate system angle, said predetermined angle being the 180* complement of the coordinate system angle.

Claim 17

Dependent Claim 63 words

In an apparatus as set forth in claim 1, including means for adjusting the space between the point and at least one guide means as measured along a line between the point and the guide means, said line being angularly disposed with respect to said lever means, to thereby change the proportion of movement of the second rod with respect to the first.

Claim 18

Dependent Claim 101 words

In an apparatus as set forth in claim 1 for use with a supply of hydraulic fluid under constant pressure and wherein said device is a hydraulic piston motor connected to said supply, said motor having an output shaft and control means to adjust the speed of rotation of said shaft, said apparatus including: means connecting said shaft to said first actuating means to adjust the first actuating means as a function of the torque exerted by said shaft; and means connecting said second actuating means to said control means to adjust the speed of the output shaft of the motor.

Claim 19

Dependent Claim 77 words

In an apparatus as set forth in claim 17, wherein said second actuating means includes a fluid operated piston in a control cylinder and a spring urging said piston in one direction in the cylinder; and said means connecting said shaft to said first actuating means comprising a setting pressure chamber with a vent connection, a pressure connection and a control connection and a control piston in said chamber, said control connection communicating with said control cylinder.

Claim 20

Dependent Claim 96 words

In an apparatus as set forth in claim 18, wherein said means connecting said shaft to said first actuating means includes a throttle connected to said control connection; and said first actuating means includes an actuating cylinder, an actuating piston in said actuating cylinder and a spring urging said actuating piston in one direction in said actuating cylinder, said actuating cylinder being connected to said throttle so that fluid under pressure from said control connection urges said actuating piston in the other direction in said actuating cylinder, said actuating piston being connected to said first rod.

Claim 21

Dependent Claim 155 words

In an apparatus as set forth in claim 19, including pump means connected to said shaft to produce a fluid flow proportional to the speed of rotation of said shaft; restrictor means having movable throttling means urged in one direction, said restrictor means being connected to said pump so that the movable throttling means is urged in the other direction to an extent that is a function of the output Of the pump; and wherein said second actuating means includes a slide valve having a movable casing and a movable valve member, said casing being connected to said movable throttling means to be moved thereby, said movable valve member being connected to said second rod to be moved thereby, said casing communicating with said constant pressure supply line, with a vent and with said control cylinder to adjust the pressure in said control cylinder as a function of the position of the movable valve member.

Claim 22

Dependent Claim 63 words

In an apparatus as set forth in claim 20, including means for adjusting the space between the point and at least one guide means as measured along a line between the point and the guide means, said line being angularly disposed with respect to said lever means, to thereby change the proportion of movement of the second rod with respect to the first.

Claim 23

Dependent Claim 48 words

In an apparatus as set forth in claim 21, wherein said lever means comprising a first and a second lever separated by a predetermined angle and fixedly connected to each other, said first rod slideably engaging said first lever, and said second rod slideably engaging said second lever.

Claim 24

Dependent Claim 39 words

In an apparatus as set forth in claim 22, wherein said device is to be controlled in accordance with a coordinate system having a coordinate system angle, said predetermined angle being the 180* complement of the coordinate system angle.

Claim 25

Dependent Claim 48 words

In an apparatus as set forth in claim 20, wherein said lever means comprising a first and a second lever separated by a predetermined angle and fixedly connected to each other, said first rod slideably engaging said first lever, and said second rod slideably engaging said second lever.

Claim 26

Dependent Claim 39 words

In an apparatus as set forth in claim 20, wherein said device is to be controlled in accordance with a coordinate system having a coordinate system angle, said predetermined angle being the 180* complement of the coordinate system angle.

Claim 27

Dependent Claim 15 words

In an apparatus as set forth in claim 4, wherein said predetermined angle is 90*.

Claim 28

Dependent Claim 15 words

In an apparatus as set forth in claim 4, wherein said predetermined angle is 135*.

Claim 29

Dependent Claim 15 words

In an apparatus as set forth in claim 4, wherein said predetermined angle is 270*.

Claim 30

Dependent Claim 15 words

In an apparatus as set forth in claim 4, wherein said predetermined angle is 315*.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-03-07	1975-09-06	1976-03-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-03-07	1979-09-06	1980-03-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-03-07	1983-09-06	1984-03-07	$7700.00	Window Closed / Lapsed

Device for controlling quantities which are defined by the product of two measured variables

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