Patent ID: 8858375
Filing Date: 2014-10-14
Classification: F16B,F16H,Y10S

Abstract:
1. A chain tensioner arm assembly comprising: a one-piece molded polymeric tensioner arm comprising a pivot bore defined about a pivot axis, said pivot bore comprising an inner end opening through a rear face of the tensioner arm and an outer end opening through a front face of the tensioner arm, said pivot bore comprising a pivot bore diameter and at least one pocket located between said inner and outer ends of said bore and that opens through said pivot bore diameter, said at least one pocket comprising an outer wall; said one-piece molded polymeric tensioner arm further comprising at least one resilient fastener retaining tab located adjacent said at least one pocket and resiliently deflectable radially outward with respect to said pivot bore toward said outer wall of said at least one pocket; a fastener extending through said pivot bore and comprising a cylindrical shoulder region located in said pivot bore, said cylindrical shoulder region comprising a recess defined therein that is engaged by said at least one resilient fastener retaining tab such that a portion of said at least one fastener retaining tab is received in said recess and inhibits separation of said fastener from said tensioner arm.