A pivotal hand tool includes first and second lever members which intersect and have aligned openings therethrough in which is received a pivot pin having an enlarged head at one end adjacent to one of the lever members and having the other end thereof welded to the other lever member or to a flat washer which bears against the other lever member. The head and the flat washer may be received in complementary recesses in the lever members. A frustoconical washer may be disposed beneath the head of the pivot pin for resiliently urging the lever members together.
申请公布号
US5220856(A)
申请公布日期
1993.06.22
申请号
US19910696715
申请日期
1991.05.07
申请人
SNAP-ON TOOLS CORPORATION
发明人
EGGERT, DANIEL M.;HOFF, JEFFREY H.;KRIVEC, BERT;MIKIC, FRANK;THOMPSON, CHRISTOPHER D.