Metal magnetic key

Details Metal magnetic key Metal magnetic key

1976-12-15

1978-03-07

Wolfe, Robert L.

Locks

Operating mechanism

Key

E05B 1926

Patent

active

040772420

ABSTRACT:
A substantially indestructible magnetic card key having an exterior formed completely of metallic material such as stainless steel. In the preferred form, one side of the key is of magnetizable material and the other of nonmagnetizable material to enhance the operation of the key and simplify its encoding.

REFERENCES:
patent: 2698917 (1955-01-01), Van Urk
patent: 3407371 (1968-10-01), Gosma
patent: 3423708 (1969-01-01), Christian
patent: 3546643 (1970-12-01), Virostek
patent: 3834197 (1974-09-01), Sedley
Credit Card Design, J. Svigals, Aug. 1966, vol. 9, No. 3, p. 314.

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