Thrust ball bearing unit
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United States of America Patent
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Oct 13, 1987
Grant Date -
N/A
app pub date -
Jun 30, 1986
filing date -
Jun 28, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thrust ball bearing unit has a pair of ringed cylindrical upper and lower casings, each casing being made of synthetic resin, a pair of upper and lower races, and a buffer interposed between the upper casing and the upper race or between the lower race and the lower casing. Alternatively, two buffers are interposed between the upper casing and the upper race and between the lower race and the lower casing respectively. The upper and lower casings have peripheral sealing portions which are in a labyrinth or contact seal relationship with each other.
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