Method and apparatus for making a secondary key for a lock mecha

Details Method and apparatus for making a secondary key for a lock mecha Method and apparatus for making a secondary key for a lock mecha

1978-12-11

1981-10-13

Larson, Lowell A.

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72220, 72465, 101269, B21D 3300

Patent

active

042940966

ABSTRACT:
A small and simply operated recording apparatus employing an elastic pressure element is utilized to make a three dimensional recording in thin metallic foil from each of the two sides of a primary key from which a secondary key is to be manufactured, the recordings placed in an interpreting apparatus, which may be located remotely from the recording apparatus, which permits extraction of precise three dimensional data stored in the recordings whereafter the extracted data is utilized in key cutting apparatus to produce a secondary key, in all comprising a key making system.

REFERENCES:
patent: 2176371 (1939-10-01), Wahl
patent: 2351475 (1944-06-01), Berger
patent: 2397608 (1946-04-01), Johnson
patent: 2988838 (1961-06-01), Morgan
patent: 3538848 (1970-11-01), Barbour
patent: 3704668 (1972-12-01), St. Onge et al.

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