Hydraulic brake booster

Details Hydraulic brake booster Hydraulic brake booster

2007-12-04

2007-12-04

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

Reexamination Certificate

active

11281315

ABSTRACT:
An hydraulic brake booster for an automobile hydraulic system comprising of a boost cylinder, a boost piston and a boost chamber defined by a boost piston working in a bore in a body and being adapted to apply an output force to an output rod in response to a pressure applied to a boost chamber under a control valve, in turn responsive to an input force from input rod, wherein the input rod move in a forward operating direction up to a prescribed point so as to prevent fluid from a radial high pressure supply port from entering the boost chamber when the booster is in an inoperative position, any added movement of the input rod in a forward operating direction lifts the boost piston ball and uncovers the supply port so as to allow pressurized fluid into the boost chamber from the accumulator.

REFERENCES:
patent: 3889467 (1975-06-01), Huffman et al.
patent: 4655512 (1987-04-01), Leiber
patent: 4732429 (1988-03-01), Belart et al.
patent: 5558002 (1996-09-01), Robbins et al.
patent: 5715680 (1998-02-01), Kruckemeyer et al.
patent: 2005/0121973 (2005-06-01), Matsuno et al.

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