Patent ID: 7344332
Filing Date: 2008-03-18
Classification: F16B,F16D,Y10T

Abstract:
1. A spacer made of a metal and interposed between opposed faces of two members having respective bores co-axial with each other and fastened to each other by inserting a fastening member into the bores and tightening the fastening member, the spacer comprising: a base interposed between the opposed faces of the members and having a through hole co-axial with the bores of the respective members so that the fastening member is inserted through the hole, the base lying in a plane and the through hole being coplanar with the base; a temporarily retaining portion extending directly from an open edge of the hole of the base in a direction substantially perpendicular to said plane for temporarily retaining the overall spacer on one of the members before the members are fastened to each other, the temporarily retaining portion being inserted into the bore of said one member and caught on a wall defining the bore; and the temporarily retaining portion having a pair of projections formed on respective opposite sides of a distal end thereof so that the projections extend in a circumferential direction of the hole of the base, each projection including a lower edge formed to be upwardly inclined when the temporarily retaining portion is inserted into the bore of said one member, each projection being brought into sliding contact with the open edge of the bore of said one member so that the overall spacer is moved toward a central axis of the bore of said one member.