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Class Information
Number: 60/581
Name: Power plants > Pressure fluid source and motor > Pulsator > Plural structurally related master pistons, cylinders or pulsator circuits
Description: Apparatus comprising interrelated master-slave systems or a plurality of interconnected master cylinder devices.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8550116 Twin power valve with integrated pressure balance Oct. 8, 2013
8091356 Vehicular brake system Jan. 10, 2012
7861523 Vehicular brake system Jan. 4, 2011
7739871 Press-driven tool actuation system Jun. 22, 2010
7194859 Intensifier Mar. 27, 2007
6929104 Vertically oriented dual circuit pilot master cylinder Aug. 16, 2005
6895749 Double-acting pressure intensifying cylinder and method for intensifying pressure in the cylinder May. 24, 2005
6851355 Pressing method, pressing mechanism and resin molding device Feb. 8, 2005
6789389 Piston-cylinder mechanisms and pressure control units utilizing such piston-cylinder mechanisms Sep. 14, 2004
6729132 Remotely and directly pedal operated hydraulic compact booster for bi-directional braking May. 4, 2004
6705682 Hydraulic brake apparatus for a vehicle Mar. 16, 2004
6609370 Dual hydraulic booster assemblies for vehicle hydraulic braking systems Aug. 26, 2003
6502396 Two stage brake valve Jan. 7, 2003
6270323 Hydraulic power conversion device Aug. 7, 2001
6079209 Hydraulic power conversion device Jun. 27, 2000
6065289 Fluid displacement apparatus and method May. 23, 2000
6026934 Hydraulic lift with yoked cylinders Feb. 22, 2000
5960629 Control apparatus for a brake booster Oct. 5, 1999
5890364 Master cylinder having a single service piston with compensation and damping sections Apr. 6, 1999
5887432 Brake master cylinder with axially movable sleeve Mar. 30, 1999
5878574 Master cylinder having nested concentric pistons Mar. 9, 1999
5857334 Vehicle brake booster Jan. 12, 1999
5857335 Hydraulic impulse rotational motor Jan. 12, 1999
5832727 Hydraulic oil well pump drive system Nov. 10, 1998
5802853 Valve housing assembly for a brake valve Sep. 8, 1998
5778672 Brake valve Jul. 14, 1998
5711151 Brake-pressure modulation device Jan. 27, 1998
5649424 Two-stage pressure cylinder Jul. 22, 1997
5526644 Oil intensifier cylinder Jun. 18, 1996
5447026 Hydraulic oil well pump drive system Sep. 5, 1995
5442916 Control valve assembly for total pressure hydraulic brake Aug. 22, 1995
5431015 Flexible bellows actuation system Jul. 11, 1995
5414998 Tandem master cylinder having little pressure-imbalance May. 16, 1995
5410768 Method and apparatus useful for the maintenance of blood circulation May. 2, 1995
5394701 Brake valve with prefill chamber unloading valve Mar. 7, 1995
5327723 Master cylinder compensation ports Jul. 12, 1994
5289682 Arrangement of a master cylinder and brake booster Mar. 1, 1994
5287700 Flexible bellows actuation system Feb. 22, 1994
5261235 Hydraulic pressure actuating systems and reservoirs for same Nov. 16, 1993
5259195 Fluid pressure intensifier Nov. 9, 1993
5239828 Two-stage valve Aug. 31, 1993
5233835 Two-stage valve Aug. 10, 1993
5218821 Pressure intensifier cylinder utilizing air Jun. 15, 1993
5197285 Modular digital actuator Mar. 30, 1993
5191765 Master cylinder for a hydraulic brake system and steering brake system Mar. 9, 1993
5188431 Brake system with dual vacuum boosters having interconnected chambers and dual master cylinders having interconnected hydraulic circuits Feb. 23, 1993
5184468 Brake power booster and master cylinder assembly with return spring plate Feb. 9, 1993
5161449 Pneumatic actuator with hydraulic control Nov. 10, 1992
5150575 Hydraulic brake booster Sep. 29, 1992
5141112 Veneer stacking system Aug. 25, 1992

1 2 3 4










 
 
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