Patent ID: 6244235
Filing Date: 2001-06-12
Classification: F01L

Abstract:
An integral valve stem seal subassembly comprising:a valve spring;a unitary metal annular valve seal retainer including lower, intermediate and upper annular portions, wherein the inner diameter of said upper portion is less than the inner diameter of said intermediate portion, and the inner diameter of said intermediate portion is less than the inner diameter of said lower portion, a flange extending radially outwardly of said lower portion for engaging at least one coil of said valve spring; andan annular sealing member having upper and lower seals, said sealing member bonded to said retainer intermediate and upper portions, said upper seal including an inner circumferential surface for sealing engagement with an outer surface of a valve stem, said lower seal including a frustoconical end extending axially from said upper seal to contact a top portion of a valve guide.