Door locking and restraining mechanism

Details Door locking and restraining mechanism Door locking and restraining mechanism

1985-09-27

1986-11-25

Raduazo, Henry E.

Closure fasteners

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Multiple

292269, E05C 1732

Patent

active

046244921

ABSTRACT:
There is provided an improved door locking and restraining device which employs a reciprocating bolt to secure the door closed when in a first position by engagement of the bolt with a locking plate. With the bolt in a second position, extension levers attached to the locking plate are engaged to allow secure limited opening of the door.

REFERENCES:
patent: 388074 (1888-08-01), Reardon
patent: 530316 (1894-12-01), Yates
patent: 1126969 (1915-02-01), Foerster
patent: 1988237 (1935-01-01), Chisling
patent: 2368411 (1945-01-01), Chambers
patent: 3322453 (1967-05-01), Nagai

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