Washer seal for a cam braking system
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Dec 3, 1999
filing date -
Dec 3, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A washer seal for a cam braking system is disclosed that sealingly abuts a bushing assembly and a camshaft. The washer seal is preferably made of a metal washer bonded to a flexible material. The bushing assembly supports the camshaft in the cam braking system. The bushing washer seal is preferably generally ring-shaped having a first ring-shaped flat section defining a bore along a longitudinal axis, a second ring-shaped curved section contiguous with and spaced radially from the first section, and a lip that extends longitudinally from the second section. In a preferred embodiment, the lip extends from the washer seal at an angle from the washer seal second section. In an alternative embodiment, the lip extends from the washer seal at an angle from the washer seal first section. The bushing assembly includes a radially outer surface. The lip of the washer seal deforms radially outwardly to engage the bushing assembly radially outer surface, thereby providing an axial locating feature. The lip remains radially outwardly expanded while engaged with the bushing assembly. The internal bore of the washer seal is angled to receive the camshaft. Preferably, the washer seal does not rotate with the camshaft. Alternatively, the washer seal does rotate with the camshaft.
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