Door latch

Details Door latch Door latch

1974-10-03

1976-04-06

Wolfe, Robert L.

Closure fasteners

Bolts

Sliding

292 2, 292 11, 292346, E05C 700, E05C 1900

Patent

active

039485501

ABSTRACT:
A latch for use with a door knob lock for contact with a corresponding opening formed in a door jamb consisting of a bolt having a beveled surface along its closing edge and including a slot defined by a first side wall substantially perpendicular to the axis of the bolt and formed adjacent to the edge of the door, a second spaced-apart wall formed within the bolt and within the door jamb recess and a base surface interconnecting the two walls together. The intersection between the second wall and the base surface preferably defines a notch having an acute angle. The base surface is preferably inclined with respect to the axis of the bolt so that its intersection with the first wall forms an acute angle. The slot formed in the bolt is capable of catching any flat instrument which is inserted between the door and the door jamb to prevent unauthorized entry.

REFERENCES:
patent: 359183 (1887-03-01), Sherwood
patent: 1194636 (1916-08-01), Joy
patent: 1471061 (1923-10-01), Reineman
patent: 1528689 (1925-03-01), Phillips
patent: 1993659 (1935-03-01), Goodman et al.
patent: 2028954 (1936-01-01), Roedding
patent: 2492322 (1949-12-01), Russell
patent: 2830837 (1958-04-01), Falk
patent: 2841430 (1958-07-01), Krause

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