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| Number | Title | Issue Date |
| 7107769 | Master cylinder A combined master cylinder and dump valve includes a piston slideable within a body bore that defines a master cylinder for pressurizing a brake port. The piston includes a piston seal for isolating a pressure port from a tank port, a piston bore, a first piston hol... | 09/19/2006 |
| 7040717 | Negative pressure boosting device In a negative pressure boosting device of the present invention, upon depression of a pedal at a normal speed, an input shaft 11 and a valve plunger 10 move forward to close a vacuum valve 15 and open an atmospheric valve 16 and a power p... | 05/09/2006 |
| 6959637 | Vacuum brake booster A control valve for a brake booster having a first member with a first bore, a second member located in the first bore and having a second bore, a plunger located in the second bore and connected to an input member. A gear fixed to the second member with teeth that ... | 11/01/2005 |
| 6918248 | Independent metering valve assembly for multiple hydraulic load functions A hydraulic system, particularly suitable for use in a work machine, is provided with a hydraulic pressure source. A first hydraulic load is associated with a first load function. A second hydraulic load is associated with a second load function. An independent mete... | 07/19/2005 |
| 6609370 | Dual hydraulic booster assemblies for vehicle hydraulic braking systems A dual hydraulic booster assembly for a braking system of a tractor or like vehicle has a logic valve operable in a first mode to control the supply of pressure fluid for braking on one side of the vehicle to facilitate steering, and in a second mode of o... | 08/26/2003 |
| 6491355 | Boosted braking device with passive safety A boosted braking device for a motor vehicle having a master cylinder (M) and a pneumatic booster (S). The booster (S) has a rigid casting (10) divided by a mobile partition (12) into at least a front chamber (14) and a rear chamber (16). A three-way valv... | 12/10/2002 |
| 6282896 | Idle stroke shortening device in brake system A brake system 1 of the invention comprises a brake pedal 2, a booster 3 which boosts the input force applied by the brake pedal 2 and outputs the boosted force, a travel amplifying mechanism 4 which amplifies the travel of an output shaft of the booster ... | 09/04/2001 |
| 6216457 | Electronically controlled hydraulic brake boost pressure control system A vehicle hydraulic system is disclosed comprising a hydraulic fluid reservoir; a pressure force supplying pressurized hydraulic fluid to a discharge header; a fluid conduit between the discharge header and the reservoir; a back pressure valve operative i... | 04/17/2001 |
| 5960629 | Control apparatus for a brake booster A control apparatus (12) in a brake system (10) has a housing (20) with an inlet port (26), a gear port (32), a relief port (38), and an outlet port (42). A piston (44) located in a first bore (22) has a first peripheral surface (50) with first (52) and s... | 10/05/1999 |
| 4559777 | Power steering apparatus with at least one additional hydraulic load connected to it A power steering apparatus with a pressure supply for additional loads, the steering pump of which has a plurality of feed chambers separate from one another. The additional loads, such as a brake booster and/or a level regulating device, are connected to... | 12/24/1985 |
| 4420934 | Automotive vehicle hydraulic system A hydraulic system is disclosed for use in an automotive vehicle including an engine, a power steering gear, and a brake booster. The system includes a single engine driven pump in fluid communication with first and second fluid flow control means. The fi... | 12/20/1983 |
| 4362086 | Pressure limiter for hydraulic brake booster The present invention relates to an improvement in a hydraulic brake booster, and in particular, covers a structure which provides a pressure limiter for the hydraulic brake booster. The booster comprises a housing which defines a pressure chamber and sup... | 12/07/1982 |
| 4362019 | Motor vehicle hydraulic system A motor vehicle provided with servo-assisted controls for the brakes and steering, has an hydraulic system of the type comprising a volumetric pump the input of which is connected to a reservoir, and first and second distributor devices the first of which... | 12/07/1982 |
| 4319455 | Hydraulic power brake system and hydraulic brake booster and controls therefor A hydraulic pressure actuated power brake system having a hydraulic power booster with operating pressure on both sides of the power piston power wall. The booster is therefore hydraulic pressure suspended so that the hydraulic pump of the system need not... | 03/16/1982 |
| 4311085 | Hydraulic brake booster A hydraulic brake booster includes a housing 12 with a first chamber 40 and a second chamber 42. An input member 54 extends into the first chamber 40 and is exposed to the second chamber 42. The input member is movable within the first chamber 40 to incre... | 01/19/1982 |
| 4285198 | Accumulator charging valve The charging valve comprises a pressure port connected with a pressurized fluid source, a first user port which is connectible to a first user component, a second user port which is connectible to an accumulator and to a second user component of the close... | 08/25/1981 |
| 4179980 | Hydraulic brake booster A hydraulic brake booster adapted to vehicles having a manually operable control valve to control pressure increase in the booster for attaining the available braking fluid pressure in the brake wheel cylinders of the vehicles. In the booster is employed ... | 12/25/1979 |
