Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert W. Lehmann0
Eric W. Hesher0
Date of Patent
October 21, 2008
0Patent Application Number
110501190
Date Filed
February 3, 2005
0Patent Primary Examiner
Patent abstract
A valve stem seal having an annular valve body with an upper surface, a lower surface, and defining an aperture is disclosed. The valve body is positioned for selective sealing engagement with a valve stem. At least one orifice is disposed on an inner surface of the annular valve body between the annular valve body and the valve stem. The orifice controls the rate of oil flow between the annular valve body and the valve stem.
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