Pneumatic booster

Details Pneumatic booster Pneumatic booster

2005-12-27

2005-12-27

Lazo, Thomas E. (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

Reexamination Certificate

active

06978710

ABSTRACT:
An elastic member is interposed between a reaction disk and a plunger. By moving the plunger to open a poppet seal such that atmospheric air is introduced into the variable pressure chambers, a pressure differential is created between the variable pressure chambers and constant pressure chambers (negative pressure). As a result, servo power is applied to an output rod, and a resulting reaction force is partly transmitted back to an input rod through the reaction disk. During a rapid braking operation, a piston is caused to retract by a pin, thus pushing the elastic member into an outer peripheral groove formed on the piston so that the elastic member is axially compressed. As a result, the movement amount of the plunger can be increased without receiving a reaction force, enabling the rapid development of servo power.

REFERENCES:
patent: 6711982 (2004-03-01), Machida et al.
patent: 6715401 (2004-04-01), Takasaki et al.
patent: 6843161 (2005-01-01), Schluter
patent: 2002/0129697 (2002-09-01), Machida et al.

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