Rotary shaft brake
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United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
Nov 28, 2002
app pub date -
May 16, 2002
filing date -
May 22, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brake assembly permits axial rotation of a shaft in a first direction and retarding axial rotation of the shaft in an opposite, reverse direction. The brake assembly includes a rotary member for mounting to and rotation with the shaft; a fluid actuated brake mechanism for retarding the rotation of the rotary member and consequently the shaft upon pressure build up in the brake mechanism; a bi-direction pump for conveying fluid from a reservoir, the pump being driven by rotation of the shaft; and a control manifold for directing circulating the fluid from the pump through the brake mechanism and back to the reservoir without pressure build up, the circulation of the fluid preventing the accumulation of gas in the brake mechanism, when the shaft turns in the first direction and or directing fluid to the brake mechanism for activating the brake mechanism by fluid pressure build up to retard rotation of the shaft when the shaft turns in the reverse direction.
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