Locksmith tool apparatus for determining length of locking eleme

Details Locksmith tool apparatus for determining length of locking eleme Locksmith tool apparatus for determining length of locking eleme

1984-02-27

1985-08-20

Smith, Robert I.

Geometrical instruments

Gauge

Lock or key

70394, G01B 520

Patent

active

045355460

ABSTRACT:
Locksmith tool apparatus determines the length of a locking element in a lock by engaging a locking element inside a lock and by moving the element to compress a compression spring to a known minimum length and by measuring the distance moved. By subtracting the distance the element is moved from known dimensions, the length of the locking element is determined.

REFERENCES:
patent: 1175819 (1916-03-01), Ross
patent: 3452562 (1969-07-01), Loveless
patent: 3827151 (1974-08-01), Naill
patent: 4300416 (1981-11-01), Ross
patent: 4388815 (1983-06-01), Lawler
patent: 4433487 (1984-02-01), Roland

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