Liquid viscous damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 14, 1993
Grant Date -
N/A
app pub date -
Jun 25, 1992
filing date -
Nov 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A liquid viscous damper having drive plates (3) and driven plates (23) in a case (1). The drive plates (3) have an annular housing (35) mounted thereon and slidable relative to drive plates (3) in a circumferential direction. A maximum torsional torque limiting stopper mechanism is installed between the housing (35) and the driven plates (23). A torque limiter (51), including balls (52), ball engaging concave portions (53) and urging springs (55) are positioned between the casing (1) and the drive plates (3). The ball engaging concave portions (53) are formed on a sliding surface of the casing (1) and the balls are urged by the urging springs (55) to be pressed onto the sliding surfaces of the case (1) so as to engage with the ball engaging concave portion (53) by a specified pressure for disengagement from concave portions (53) when excessive impact torque is applied.
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