Vacuum brake booster

Details Vacuum brake booster Vacuum brake booster

1981-11-20

1983-12-06

Hershkovitz, Abraham

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92165PR, B60T 1300

Patent

active

044186134

ABSTRACT:
The vacuum brake boosters used today require a relatively heavy vacuum housing to gain the necessary stiffness for transmitting the mechanical actuating force. According to the present invention draw bars extend from one housing wall to the other parallel to the push rod and penetrating the vacuum piston in a sealed manner to receive the mechanical force. Thus, the vacuum housing does not receive the mechanical force and as a result can be constructed of lighter material. The movable sealing means provided between the vacuum piston and the draw-bars are in the form of small rolling diaphragms.

REFERENCES:
patent: 3411409 (1968-11-01), Bunyard
patent: 3613506 (1971-10-01), Kytta
patent: 3613517 (1971-10-01), Bradley
patent: 3981227 (1976-09-01), Azuma
patent: 4256016 (1981-03-01), Thomas
patent: 4270353 (1981-06-01), Thomas
patent: 4270438 (1981-06-01), Thomas
Girling-The New Lightweight Generation of Girling Car Brake Actuation Equipment, Jan. 8, 1979.
Lucas Girling-Girling Lightweight Car Brake Actuation Equipment, Jan. 8, 1979.

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