Two stage torsional vibration damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 2001
Grant Date -
N/A
app pub date -
Apr 2, 1997
filing date -
Apr 2, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A torsional vibration damper has an outer drive plate connected to a pair of retainer plates by an outer array of damping springs disposed partly in windows formed in the outer drive plate and partly in first windows formed in the retainer plates, and an inner drive plate which is connected to the retainer plate by an inner array of damping springs disposed partly in second windows formed in the retainer plates and partly in windows formed in the inner drive plate. The adjacent peripheries of the drive plates have a plurality of notches that are defined by radial tangs that are arranged in confronting pairs when the torsional vibration damper is in a neutral position. The retainer plates are spaced apart and connected to each other by drive blocks that are disposed partly in each notch of the outer drive plate and partly in each notch of the inner drive plate. The drive blocks engage the radial tangs of the drive plates to limit the relative angular displacements of the drive plates with respect to the retainer plates and the compression of the damping springs. The retainer plate carries an annular friction disk that is biased into engagement with the inner drive plate by a spring.
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