Lock cylinder maintenance tool

Details Lock cylinder maintenance tool Lock cylinder maintenance tool

1995-04-14

1997-05-13

Vo, Peter

Metal working

Means to assemble or disassemble

Tumbler lock

29270, 81 159, B23P 1900

Patent

active

056281099

ABSTRACT:
A tool for effecting inspection, maintenance and/or replacement of pins within a lock cylinder. The inventive device includes a cylindrical portion having an outside diameter corresponding to a diameter of a plug being removed from a lock cylinder. A non-cylindrical portion colinearly extends from the cylindrical portion and includes a reducing exterior wall characterized by a decreasing radius from a longitudinal center of the tool. The non-cylindrical portion permits a desired number of pins to be lowered from the lock cylinder at a desired speed for inspection, maintenance and/or removal thereof.

REFERENCES:
patent: 2774133 (1956-12-01), Sitz
patent: 3664007 (1972-05-01), Schlage
patent: 3816899 (1974-06-01), Kitts
patent: 4305314 (1981-12-01), Simpson
patent: 4667494 (1987-05-01), Joosten
patent: 4675994 (1987-06-01), Detloff
patent: 4680860 (1987-07-01), Detloff

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