Lock-cylinder key

Details Lock-cylinder key Lock-cylinder key

1993-02-18

1994-12-13

Cuomo, Peter M.

Locks

Operating mechanism

Key

70401, 70409, E05B 1906

Patent

active

053720245

ABSTRACT:
The invention relates a lock-cylinder key (S) having bit steps (6) protruding on the wide sides (4) of its key shank (1) for the positioning of the lock-cylinder tumblers (19). In order to obtain a particularly simple but very dependable solution from a locking standpoint, the bit steps (6) represent the extensions of the edges (10) of a wide-side opening (11).

REFERENCES:
patent: 586676 (1897-07-01), Taylor
patent: 917365 (1909-04-01), Schoell
patent: 1616255 (1927-02-01), Douglas
patent: 2030837 (1936-02-01), Full et al.
patent: 2035181 (1936-03-01), Molinare
patent: 2057532 (1936-10-01), MacDonald
patent: 2301155 (1942-11-01), Sebestyen et al.
patent: 2395762 (1946-02-01), Rober
patent: 3669211 (1972-06-01), Gilgoff
patent: 3754422 (1973-08-01), Stackhouse
patent: 4296618 (1981-10-01), Guiraud
patent: 4815307 (1989-03-01), Widen
patent: 4964288 (1990-10-01), Braun et al.
patent: 5222383 (1993-06-01), Fann et al.

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