Mechanically controllable power booster

Details Mechanically controllable power booster Mechanically controllable power booster

1981-06-23

1984-01-03

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, 92 98D, 92165PR, F15B 910, F16J 302

Patent

active

044236654

ABSTRACT:
In order to reduce the forces transmitted by the reaction device of a vacuum brake booster, there is provided a first booster piston directly connected to the booster's output member and a second booster piston of smaller size acting solely on the reaction device. Both booster pistons are controlled by a control valve carried by the second booster piston. The second booster piston is arranged inside an internal cylindrical sleeve penetrating the first booster piston and interconnecting the transverse end walls of the booster housing.

REFERENCES:
patent: 4334459 (1982-06-01), Riedel et al.
patent: 4347779 (1982-09-01), Belart
patent: 4353287 (1982-10-01), Weiler

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