Lock

Details Lock Lock

1974-08-23

1976-07-20

Gilliam, Paul R.

Locks

Operating mechanism

Key

70377, 70409, E05B 1514, E05B 1906, E05B 2906

Patent

active

039699153

ABSTRACT:
A cylinder lock having a non-rotatable part which is provided with an axially extending chamber and one or more recesses communicating with the chamber. A plug is arranged in this chamber for rotation about an axis, and a key is axially insertable into the plug. A number of tumblers are slidably mounted on the plug for movement transverse to the axis into and out of the recesses, the purpose of these tumblers being to prevent rotation of the plug when at least one of the tumblers extends into a recess. Each tumbler has an opening through which the key, when inserted into the plug, may extend. The tumblers are spring-biased for movement into positions where the tumblers are in a recess. The openings of the tumblers have respective contours that provide two contact edges which are next to each other and which are stepped in the transverse direction of movement of the tumblers, and the key has a number of parallel, axially extending longitudinal edges each of which engages a contact edge of at least one of the tumblers for pressing the respective tumbler, against the action of its associated spring, out of the recess.

REFERENCES:
patent: 1298224 (1919-03-01), King
patent: 1644365 (1927-10-01), Bennett
patent: 2023207 (1935-12-01), Olson
patent: 2030836 (1936-02-01), Full et al.
patent: 2035181 (1936-03-01), Molinare
patent: 2729091 (1956-01-01), Taylor
patent: 3707863 (1973-01-01), Schwab et al.

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