Patent ID: 6770237
Filing Date: 2004-08-03
Classification: B29C,F16F

Abstract:
A method of producing a dust cover assembly having a tubular dust cover disposed radially outwardly of a shock absorber for covering a protruding part of a piston rod of the shock absorber, said method comprising the steps of:preparing a fixing member including a mounting bore to which a protruding end portion of the piston rod is inserted and fixed, and an engaging portion formed in an outer circumferential surface thereof and having an undercut shape in an axial direction thereof; preparing a tubular parison having a large diameter portion at one of axially opposite end portion thereof; positioning said parison with respect to said fixing member such that said large diameter portion of said parison is disposed radially outwardly of said outer circumferential surface of said fixing member including said engaging portion; closing a blow mold so as to form a mold cavity around said parison and so as to hold said large diameter portion of said parison in close contact with said outer circumferential surface of said fixing member for molding said large diameter portion of said parison; and executing a blow molding of said parison by introducing a compressed gas into said blow mold through said mounting bore of said fixing member, so as to form said tubular dust cover.