Brake booster with compression spring extension limiting links
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United States of America Patent
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Dec 28, 1993
Grant Date -
N/A
app pub date -
Jun 15, 1992
filing date -
Jul 16, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a vacuum-operated servo-brake comprising, in a casing consisting of a shell (10) and a cover (12), a piston (20) separating leaktightly two inner chambers (22, 24), a valve means controlled by a rod (32) projecting from the casing in order to ensure the operation of the servo-brake, and a prestressed spring (34) for returning the piston (20) to its rest position substantially abutting the cover (12), the spring (34) bearing on the shell (10). According to the invention, the spring (34) comprises a mechanism enabling its extension to be limited when the shell (10) and the cover (12) are not fixed to each other.
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