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Class Information
Number: 303/12
Name: Fluid-pressure and analogous brake systems > With pump > Vacuum
Description: The system includes devices for creating a partial vacuum.

Patents under this class:

Patent Number Title Of Patent Date Issued
8688340 Apparatus and method for supplementing brake vacuum pressure Apr. 1, 2014
8608254 Motor system for triggering brake and steering control during engine failure Dec. 17, 2013
8562080 Brake system for engine-operated vehicle and controlling method thereof Oct. 22, 2013
8376475 Device for supplying pressure to an actuation unit of a motor vehicle brake system and method for controlling said device Feb. 19, 2013
8375843 Brake booster device with damping element Feb. 19, 2013
8360739 Control apparatus and control method for negative pressure generating apparatus Jan. 29, 2013
7909413 Hydraulic unit Mar. 22, 2011
7823986 Device for supplying pressure to an actuation unit of a motor vehicle braking system and method for controlling said device Nov. 2, 2010
7752841 Vacuum intensifier for vehicle brake Jul. 13, 2010
7722132 Servo-brake system in an Otto cycle engine May. 25, 2010
7475951 Control system for brake vacuum pump Jan. 13, 2009
6739676 Braking system having vacuum booster whose boosting ratio is lowered at fixed transition point at which wheel cylinder pressure increase is initiated May. 25, 2004
6192308 Brake control device of vehicle operable with double checking of driver's positive braking intention Feb. 20, 2001
6158823 Towed vehicle brake actuation system Dec. 12, 2000
5967628 Vehicular brake system Oct. 19, 1999
5961189 Brake system for automotive vehicles with pneumatic brake power booster Oct. 5, 1999
5915798 Towed vehicle braking system Jun. 29, 1999
5823637 Universal vacuum pump apparatus and method Oct. 20, 1998
5372409 Fluid-pressure operated boosters for vehicle braking systems Dec. 13, 1994
5324101 ABS damper chamber and bleed valve Jun. 28, 1994
5207770 Modifier for vacuum booster reaction force May. 4, 1993
5152587 Hydraulic slip-controlled brake system with pneumatic power booster Oct. 6, 1992
4989496 Vacuum supply system with throttling valve in a motor vehicle Feb. 5, 1991
4953447 Vacuum supply system in a motor vehicle Sep. 4, 1990
4946230 Method and an apparatus for charging an anti-lock brake system with brake liquid Aug. 7, 1990
4850652 Feed circuit for railway braking systems Jul. 25, 1989
4828337 Brake system for automotive vehicles May. 9, 1989
4767163 Motor vehicle braking system with a wheel anti-locking function with vacuum sensor Aug. 30, 1988
4738112 Method and device for controlling brake booster supplementary vacuum pump ensuring good booster vacuum and low pump wear Apr. 19, 1988
4518903 Delayed turn-off control for vehicle pumping device May. 21, 1985
4510425 Control device for pump apparatus for vehicular use Apr. 9, 1985
4483421 Vacuum/hydraulic control system for speed synchronization of a pair of shafts Nov. 20, 1984
3950946 Vacuum producing system Apr. 20, 1976

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