Bearing unit for the hub of a vehicle wheel equipped with a tire inflating system
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United States of America Patent
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Aug 8, 2006
Grant Date -
Jan 8, 2004
app pub date -
May 27, 2003
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A bearing unit comprises a radially outer stationary race (1) and a pair of radially inner rotatable half-races (2a, 2b). Au intermediate annular chamber (8) is defined between the outer race (1) and the inner half-races (2a, 2b) The intermediate chamber communicates with the outside through first air passages (5) formed in the outer race (1) and with the inside of the bearing unit through second radial air passages (6) defined between the inner half-races (2a, 2b). An intermediate annular member (10) is axially interposed between the inner half-races (2a, 2b) and defines the second passages (6).
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