Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1975-04-18
1976-08-17
Maslousky, Paul E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
92 98R, F15B 910
Patent
active
039747417
ABSTRACT:
A brake booster unit has a housing composed of a front and a rear shell element detachably coupled with each other; a resilient diaphragm is mounted in the interior space of the housing for mechanical separation thereof into a vacuum chamber and a atmospheric pressure chamber; a sleeve member and a motion-transmitting rod concentrically arranged thereto and connected with a brake pedal are partially introduced sealingly and movably into the interior of the atmospheric chamber; first valve means is formed between the rod and the sleeve for "on-off" control of fluid communication between the atmospheric pressure chamber and ambient atmospheric pressure; second valve means includes a beaded inner periphery of the diaphragm and acting as a valve seat; a valving portion to mate with the diaphragm is formed on the sleeve and has a configuration preventing unintentional radial displacement of the beaded periphery while the booster unit is urged toward its operating position; the second valve means is kept at its "closed" position when interruption of fluid communication between the both chambers is required.
REFERENCES:
patent: 3199298 (1965-08-01), Brown
patent: 3316816 (1967-05-01), Yardley
patent: 3387455 (1968-06-01), Eggstein
Aisin Seiki Kabushiki Kaisha
Maslousky Paul E.
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