Bearing guided ferrofluid seal and seal carrier
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United States of America Patent
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-
May 6, 2003
Grant Date -
N/A
app pub date -
Dec 28, 2001
filing date -
Dec 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A bearing guided ferrofluid seal and seal carrier system that may be used with a bearing assembly with an outer annular ring surface. A seal carrier of the present invention has a carrier ferrofluid seal surface and a carrier bearing surface that includes a first carrier bearing surface and a second carrier bearing surface. A ferrofluid seal may be attached to the carrier ferrofluid seal surface and fixtured to the second carrier bearing surface. The second carrier bearing surface may be attached to the outer annular ring surface. In one preferred embodiment the first carrier bearing surface may be attached to the upper annular ring surface. In a separate preferred embodiment the ferrofluid seal may be attached to the carrier ferrofluid seal surface so that the seal inner diameter of the ferrofluid seal is fixtured to the second carrier bearing surface in order to minimize runout.
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