George P Hendricks

US Patent:

6789313, Sep 14, 2004

Filed:

Nov 15, 2002

Appl. No.:

10/298887

Inventors:

George P. Hendricks - Sanford FL 32771

International Classification:

B23P 1904

US Classification:

2988804, 29888042, 29888049, 2988805, 29222, 29225, 29229, 29235, 29269, 29275

Abstract:

A piston-pin lock-ring-insertion tool has a ring-insertion tube ( ) in ring-insertion relationship to a ring pusher ( ). The ring-insertion tube has an inside periphery with a press-close taper ( ) that is tapered inwardly from a ring-feeder end ( ) to a ring-guide bore ( ) that is cylindrical uniformly intermediate the press-close taper and a ring-insertion end of the ring-insertion tube. The ring-insertion end ( ) of the ring-insertion tube has a perpendicularity surface ( ) that is adapted for alignment of the ring-guide bore and a piston-pin bore ( ) in a crankshaft-engine piston ( ). The ring pusher has a pusher taper ( ) with a pusher head ( ) adapted for being buttressed against a side of lock ring ( ) for pushing the lock ring from a major diameter to a minor diameter of the press-close taper proximate a circumferential entrance to the ring-guide bore. The ring pusher has a slide rod ( ) that is oppositely disposed end-to-end from the pusher head. The slide rod has a cylindrical outside periphery that slides against an inside periphery of the ring-guide bore.