Hydro-pneumatic brake actuator arranged to maintain a constant brake shoe clearance
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United States of America Patent
Stats
-
Apr 6, 1982
Grant Date -
N/A
app pub date -
Jul 16, 1980
filing date -
Jul 16, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydro-pneumatic brake actuator having a friction element positionable by the power piston during the brake application stroke through a lost-motion connection therewith to establish a stop to limit movement of the power piston during a brake release and thereby provide a predetermined brake shoe clearance. In an alternate embodiment, a leaf spring is carried by the friction element to provide a cushioned stop for the power piston to prevent inadvertent displacement of the friction element, by reason of wheel out-of-roundness imparting a 'kick-back' force on the power piston.
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