Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1990-06-22
1992-01-28
Look, Edward K.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
913692, F15B 910
Patent
active
050834967
ABSTRACT:
A seal unit for a brake booster such as of a tendem type including a centerplate disposed within a shell is disclosed. Annular seal means maintains a hermetic seal between the centerplate and a valve body. According to the invention, the annular seal means is formed with a passage which provides a communication between the inner and the outer periphery thereof. This allows a communication between the inner and the outer periphery of the annular seal means to be maintained by the passage formed therein in the event the opening of a constant pressure passage (or variable pressure passage) formed in the valve body is closed by the annular seal means. This allows a spacing between the annular seal means and a power piston or pistons mounted on the valve body to be reduced, contributing to reducing the overall length of the brake booster.
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Satoh Atushi
Suzuki Haruo
Jidosha Kiki Co. Ltd.
Look Edward K.
Ryznic John
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