Hydraulic brake booster with quick take-up and reduced stroke

Details Hydraulic brake booster with quick take-up and reduced stroke Hydraulic brake booster with quick take-up and reduced stroke

1985-10-30

1987-05-19

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60562, 60577, B60T 1300

Patent

active

046657010

ABSTRACT:
The brake booster (12) includes a housing (30) with at least one piston (38) disposed in a bore (32) to separate a pressure chamber (42) from a work chamber (76). The piston (38) engages a valve housing (79) containing therein a valve assembly (80) and the valve assembly (80) is connected to an input assembly (72) abutting the other end of the valve housing (79). The piston (38) is disposed within an extension (81) of the valve housing (79) and a seal (87) and spring (89) are disposed between the piston (38) and valve housing (79) so as to enhance initial movement of the piston (38) and provide a quick take-up and fast fill that compensates for fluid losses in the system while maintaining a reduced stroke for brake pedal travel.

REFERENCES:
patent: 3926093 (1975-12-01), Nakagawa
patent: 4196592 (1980-04-01), Nomura
patent: 4433543 (1984-02-01), Thomas
patent: 4435960 (1984-03-01), Farr
patent: 4441319 (1984-04-01), Brown
patent: 4490977 (1985-01-01), Fulmer
patent: 4514981 (1985-05-01), Brown et al.

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