Radial lip shaft seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Jun 19, 1997
filing date -
Jun 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lip seal for use in low torque, high pressure applications including a rigid retainer, a resilient body essentially covering the retainer and an inner support member. The inner support member provides spacing and orienting functions for the other elements. The inner support member has a radial dimension and outer diameter smaller than the inner diameter of an outer axial wall of the retainer so that a gap is maintained between the retainer and the inner support member under a variety of pressure, torque and shaft deflection conditions. Gap maintaining elements, preferably in the form of axially extending guides, prevent contact between the rigid seal elements. The guides may further comprise nub portions at one end which contain the inner support member in the cavity prior to installation on the shaft.
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