Security lock with pistons and cylindrical key

Details Security lock with pistons and cylindrical key Security lock with pistons and cylindrical key

1978-01-30

1980-07-08

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, E05B 2906

Patent

active

042110963

ABSTRACT:
The automobile security lock is of the kind having a body in which is rotatable a cylinder having pistons radially movable therein by a cylindrical key having notches formed therein. The body also has pistons which cooperate with the pistons in the cylinder. The pistons of the cylinder are slidable into radial cylindrical bores formed in the cylinder. Likewise the pistons in the body slide into radial slots in the body. On entry of the correct key the external extremities of the cylinder pistons lie flush with the external surface of the cylinder in such a manner as to permit rotation of the cylinder in relation to the body. However, on entry of an incorrect key where the corresponding notch is either insufficiently deep or too deep the extremities of the cylinder pistons enter said radial slots in said body or the internal extremities of the body pistons said radial bores in the cylinder to effect locking of the cylinder in relation to the body.

REFERENCES:
patent: 711376 (1902-10-01), Bayer
patent: 2057301 (1936-10-01), Golokow
patent: 2283489 (1942-05-01), Crousore
patent: 2408283 (1946-09-01), Wollin

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