Cylinder lock assembly

Details Cylinder lock assembly Cylinder lock assembly

1976-03-08

1978-01-24

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, 70453, 70455, E05B 1508, E05B 1718, E05B 2904

Patent

active

040696936

ABSTRACT:
A cylinder lock assembly includes a tubular housing rotatably receiving therein an elongated unitary barrel having a configuration suitable for single step diecast fabrication without the extremely complex coring and secondary operations heretofore required. The barrel contains a plurality of easily diecast and assembled, open sided tumblers in face to face sliding engagement, each of which is individually engaged by a finger of a unitary, multi-fingered resilient member for urging the respective tumbler into a locked position until displaced by a key moved transversely through a slot formed in each tumbler. Modified forms include a dust door receiving cavity which has a dust cover integral with the barrel and a dust door closing spring integral with the tumbler contacting resilient member. Also, simplified structures are provided to retain the barrel in the housing.

REFERENCES:
patent: 335648 (1886-02-01), Spencer
patent: 497640 (1893-05-01), Doremus
patent: 2024441 (1935-12-01), Fitzgerald
patent: 2047966 (1936-07-01), Jacobi
patent: 2666322 (1954-01-01), Uher
patent: 2766611 (1956-10-01), Hagel
patent: 3206958 (1965-09-01), Best
patent: 3287944 (1966-11-01), Crumb
patent: 3707863 (1973-01-01), Schwab
patent: 3709006 (1973-01-01), Seidewand
patent: 3739611 (1973-06-01), Ignatjer

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