Power plants – Pressure fluid source and motor – Pulsator
Patent
1996-11-18
1998-02-10
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Pulsator
91376R, B60T 1320
Patent
active
057156808
ABSTRACT:
A hydraulic power booster for a brake apply system includes a mechanically actuated hydraulic booster of compact design that can be integrated in line with a conventional type master cylinder. Additionally, a combination of twin mechanically actuated check valves is arranged to provide a structure with essentially no leakage when the hydraulic booster is at rest and when the hydraulic booster is at poise. A mechanically actuated check valve is normally held open and is positioned in a passageway between the power piston and a fluid reservoir. This check valve is substantially, immediately closed upon the application of force to the brake pedal. Another mechanically actuated check valve is provided in a passageway between the hydraulic power supply and the power piston. This check valve is mechanically opened to supply a selected amount of pressurized fluid to the power piston which generates a selected amount of vehicle braking in response to actuation of the brake pedal.
REFERENCES:
patent: 3815364 (1974-06-01), Belart et al.
patent: 4181064 (1980-01-01), Flory
patent: 5150575 (1992-09-01), Parker
patent: 5332302 (1994-07-01), Maas
Johnston Gary Lee
Kruckemeyer William Charles
Oliver Michael Leslie
Zehnder II James William
General Motors Corporation
Nguyen Hoang
Sedlar Jeffrey A.
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