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Class Information
Number: 91/6
Name: Motors: expansible chamber type > Fluid supply through diverse paths to single expansible chamber
Description: Apparatus in which a working chamber of the motor is provided with inlet motive fluid which is supplied from different sources at different times or flows through supply paths that are different at the will of the operator or under different operating conditions so as to supply force to act on the same face of the working member at different times.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7107766 |
Hydraulic pressurization system |
Sep. 19, 2006 |
| 6997098 |
Method and apparatus for driving hydraulic motors with agricultural tractors |
Feb. 14, 2006 |
| 6577039 |
Driving system and actuator |
Jun. 10, 2003 |
| 6415703 |
Method for controlling the motion velocity of a hydraulically driven machine, a drive system for a hydraulically driven machine |
Jul. 9, 2002 |
| 6357475 |
Pneumatic sequential control valve |
Mar. 19, 2002 |
| 6298767 |
Undersea control and actuation system |
Oct. 9, 2001 |
| 6276135 |
Self-contained hydraulic ESD system |
Aug. 21, 2001 |
| 6041673 |
Dual function throttle control system for heavy construction equipment machines |
Mar. 28, 2000 |
| 5692427 |
Flow reinforcement directional control valve for a hydraulic circuit |
Dec. 2, 1997 |
| 5653514 |
Automatically controlled boosted braking system with monitored reserve |
Aug. 5, 1997 |
| 5511457 |
Steering control system for an autonomous machine |
Apr. 30, 1996 |
| 5481874 |
Exhaust pressurizing circuit including flow amplification |
Jan. 9, 1996 |
| 5193429 |
Vacuum type brake booster |
Mar. 16, 1993 |
| 5188014 |
Hydraulic cylinder with pressure transmission |
Feb. 23, 1993 |
| 5163542 |
Clutch actuating hydraulic circuit |
Nov. 17, 1992 |
| 5115835 |
Stacked type hydraulic control valve system |
May. 26, 1992 |
| 5076141 |
Liquid pressure booster |
Dec. 31, 1991 |
| 5050380 |
Means for receiving and subsequently emptying hydraulic fluid from a hydraulic system |
Sep. 24, 1991 |
| 5014596 |
Remote control modification for manually controlled hydraulic systems |
May. 14, 1991 |
| 5005464 |
Brake booster |
Apr. 9, 1991 |
| 4989495 |
Hydraulic positioning system with normal and high supply and exhaust flow paths |
Feb. 5, 1991 |
| 4947894 |
Flow amplifier in hydraulic steering system of a transport vehicle |
Aug. 14, 1990 |
| 4921009 |
Torque control system |
May. 1, 1990 |
| 4914917 |
Brake actuating device for automotive vehicles |
Apr. 10, 1990 |
| 4889033 |
Pneumatic actuator |
Dec. 26, 1989 |
| 4867041 |
Vortex amplifier driven actuator spool |
Sep. 19, 1989 |
| 4835967 |
Hydraulic booster equipped with emergency accumulator |
Jun. 6, 1989 |
| 4819541 |
Control of a double-action pneumatic drive |
Apr. 11, 1989 |
| 4809586 |
Hydraulic system for a work vehicle |
Mar. 7, 1989 |
| 4768339 |
Hydraulic drive system |
Sep. 6, 1988 |
| 4763560 |
Method and apparatus of controlling and positioning fluid actuator |
Aug. 16, 1988 |
| 4759255 |
Brake booster with solenoid valves |
Jul. 26, 1988 |
| 4745844 |
Control block comprising a plurality of valve units for a plurality of hydraulic drives, in particular fork lift trucks |
May. 24, 1988 |
| 4736811 |
Steering control system |
Apr. 12, 1988 |
| 4706460 |
Hydraulic brake valve capable of operating as conventional master cylinder when brake pressure source fails |
Nov. 17, 1987 |
| 4702412 |
Zone control apparatus for central heating and/or cooling systems |
Oct. 27, 1987 |
| 4653382 |
Pull-type pneumatic booster |
Mar. 31, 1987 |
| 4647004 |
Pneumatic-hydraulic actuator system |
Mar. 3, 1987 |
| 4646517 |
Hydraulic well pumping apparatus |
Mar. 3, 1987 |
| 4621496 |
Actuator control system |
Nov. 11, 1986 |
| 4610599 |
Apparatus for controlling a hydraulic turbine |
Sep. 9, 1986 |
| 4606257 |
Electropneumatic drive system for crust breaking devices and process for operating the same |
Aug. 19, 1986 |
| 4590966 |
Control-valve system and block for a fluid-operated cylinder-and-piston assembly |
May. 27, 1986 |
| 4586424 |
Hydraulic control arrangement |
May. 6, 1986 |
| 4570661 |
Hydraulic fluid supply systems |
Feb. 18, 1986 |
| 4561824 |
Hydraulic drive system for civil engineering and construction machinery |
Dec. 31, 1985 |
| 4561341 |
Hydraulic circuitry for a backhoe |
Dec. 31, 1985 |
| 4561462 |
Multiple control valve system |
Dec. 31, 1985 |
| 4558629 |
Hydraulic control means for pipe thrust-jacking apparatus |
Dec. 17, 1985 |
| 4554786 |
Vacuum source device for vacuum booster for vehicles |
Nov. 26, 1985 |
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