F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 41/00 (2006.01) B29C 70/84 (2006.01) F01L 3/08 (2006.01)
Patent
CA 2448610
A valve stem seal assembly includes a retainer with one or more built-in sprees, a cavity at one end, an annular flange on the opposite end, and a cylindrical interior passageway therebetween. The built-in sprees extend from the bottom surface of the cavity to the annular flange. The valve stem seal assembly also includes a jacket made of an elastomeric material integrally bonded to the retainer. When the valve stem seal assembly is fitted atop the valve guide, a gap is formed between the bottom surface of the cavity of the retainer and the top surface of the valve guide to accommodate manufacturing tolerances in the height of the valve guide. The jacket is integrally bonded to the retainer by introducing material into the cavity, through the built-in sprues, and out of the bottom of the annular flange. One preferred method of manufacturing the valve stem seal assembly provides placing the retainer atop a tool plate that contains a circumferential groove, positioning the retainer to properly receive an elastomeric material, pouring the elastomeric material through the built-in sprees forming the jacket and curing the elastomeric material until the jacket is bonded with the retainer. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
Dana Automotive Systems Group Llc
Dana Corporation
Ridout & Maybee Llp
LandOfFree
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