Single use lock

Details Single use lock Single use lock

1990-05-07

1990-09-04

Wolfe, Robert L.

Closure fasteners

Seals

Encasing

292315, 70 20, B65D 5506

Patent

active

049539000

ABSTRACT:
A locking apparatus includes a generally cylindrical lock body having a pair of spaced apart radially extending lock ring apertures formed therein for accepting a lock ring and a screw aperture formed in an end of the lock body and extending to an adjacent one of the lock ring apertures for threadably accepting a lock screw. The lock ring has a curved central portion attached at opposite ends to a pair generally straight legs adapted to extend into corresponding ones of the lock ring apertures. The lock screw has a head attached to one end of a threaded body adapted to threadably engage the screw aperture and having a cutting edge formed on an opposite end for engaging one of the legs extending into the adjacent one of the lock ring apertures whereby the lock ring is retained by the lock body. The cutting edge is formed with an internal chamfer at an angle of approximately thirty degrees and an external chamfer at an angle of approximately forty-five degrees with respect to a line generally parallel to a longitudinal axis of the lock screw.

REFERENCES:
patent: 1424543 (1922-08-01), Wiloch
patent: 3330586 (1967-07-01), Becker
patent: 4342477 (1982-08-01), McClure
patent: 4505503 (1985-03-01), LeMontagne
patent: 4589693 (1986-05-01), Kennedy

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