Viscous damper
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United States of America Patent
Stats
-
Nov 11, 2008
Grant Date -
Oct 27, 2005
app pub date -
May 30, 2003
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A viscous damper having an annular inertial mass body received in a case together with a damping liquid, and a hub for fixing the case on the rotary shaft of an internal combustion engine. The case including a case main body of substantially U-shaped cross section, and a cover for liquid-tightly closing an opening directed to one axial side of the main body, and defining a sealed chamber in the inside. The inertial mass body is made by superposing and joining a plurality of annular plates. By thrust bearings attached in holes in the annular plate on body axial sides of the inertial mass body and by a journal bearing attached in a recessed groove in the inner periphery of the inertial mass body, the inertial mass body is supported both axial sides and radially and disposed for peripheral rotation in the sealed chamber.
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