Vacuum brake boosters

Details Vacuum brake boosters Vacuum brake boosters

1983-06-02

1985-05-28

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

92169, 605471, F15B 910, B60T 1348, F01B 1102

Patent

active

045192952

ABSTRACT:
A power assist apparatus (18) having a first shell (32) connected to a second shell (34) by a twist lock arrangement (41). The shells (32) and (34) are made of a light weight and flexible material such that when subjected to temperatures above 120.degree. F. the pressure differential created by vacuum on the inside of the shells (32 & 34) and atmospheric pressure on the outside of the shells (32 & 34) a crushing force is produced that urges the end (33) of the shell (32) toward shell (34). A plurality of struts (98) located between the shells (32 & 34) resists this crushing force to maintain the minimum spacial relationship between shells (32 & 34).

REFERENCES:
patent: 4286501 (1981-09-01), Thomas et al.
patent: 4398449 (1983-08-01), Takayama et al.
patent: 4402256 (1983-09-01), Ando

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