Piston pin spiral or wire lock ring insertion tool

Details Piston pin spiral or wire lock ring insertion tool Piston pin spiral or wire lock ring insertion tool

2006-07-25

2006-07-25

Watson, Robert C. (Department: 3723)

Metal working

Means to assemble or disassemble

Spring applier or remover

C029S240500

Reexamination Certificate

active

07080432

ABSTRACT:
A tool is disclosed, for inserting a multi-turn spiral lock, received by a groove of a piston assembly. The tool includes a handle, for transmitting manual torque forces, to enter a spiral, grooved head, or a profiled fitting, a wire lock ring. The spiral, grooved head, is manufactured, with a ½ turn medium-pitched, helical groove. This permits the ½ spire, after being assembled, to be easily pushed, and transferred, to a piston groove. Also, a wire lock end, equipped with a controlled sliding sleeve, allows the ring to be located on the tool, prior to assembly. This allows for an easy bore insertion to snap the wire lock into the bore groove.

REFERENCES:
patent: 2244824 (1941-06-01), Caminez
patent: 2486084 (1949-10-01), Webster
patent: 3099876 (1963-08-01), Lawles
patent: 3348293 (1967-10-01), Newton et al.
patent: 3861020 (1975-01-01), Moewe
patent: 4226013 (1980-10-01), Helesfai
patent: 4330917 (1982-05-01), Dzurkovich
patent: 5214831 (1993-06-01), Collins et al.
patent: 5802694 (1998-09-01), Myles
patent: 6421899 (2002-07-01), Zitnay

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