Tubular door lock with plate shaped bolt actuator

Details Tubular door lock with plate shaped bolt actuator Tubular door lock with plate shaped bolt actuator

1990-07-23

1991-06-04

Nicholson, Eric K.

Closure fasteners

Bolts

Sliding

292337, 292DIG74, E05C 116

Patent

active

050208373

ABSTRACT:
A tubular door lock (1) has an actuating plate member (4) of metal formed by pressing and provided with a square shaft hole (42) and four square projections (43) around the square shaft hole to fit in a round opening (22, 32) of either of two assembling plates (2, 3) between which the actuating plate (4) is disposed when assembled. The actuating plate is rotated by rotation of the square shaft so that cams (44) thereon engage teeth (13) on bolt plate (11) to retract the bolt (12).

REFERENCES:
patent: 2645512 (1953-07-01), Netschert
patent: 2648560 (1953-08-01), Quigley et al.
patent: 2656207 (1953-10-01), Russell et al.
patent: 2736597 (1956-02-01), Russell
patent: 4615549 (1986-10-01), Conture
patent: 4687239 (1987-08-01), Lin
patent: 4750766 (1988-06-01), Shen
patent: 4767140 (1988-08-01), Lin
patent: 4820330 (1989-04-01), Lin
patent: 4890871 (1990-01-01), Lin

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