Security door

Details Security door Security door

1983-01-19

1985-08-13

Smith, Gary L.

Locks

Special application

For closures

70DIG42, 109 59R, 292335, 292337, E05B 6314

Patent

active

045341923

ABSTRACT:
A door is locked in the closed position by a system of five bolts which can be simultaneously operated from either side of the door by a handle or key operator. Both the handle and key operator are common to all of the bolts in the system and are connected through a rotary camming device with a linkage including parts drivingly connected with the bolts. A lost motion connection is provided between the key operator and rotary camming device to enable complete rotation and withdrawal of the key. The linkage and bolts are protectively enclosed inside of tough conduits and linkage access housings. A safety bolt immobilizing device is provided on the door adjacent to one bolt of the locking system to block the extension of the bolts while the door is open and this device moves automatically to a bolt release position when the door is closed. The locking system can be placed in a residential door or may be installed on a commercial door.

REFERENCES:
patent: Re29712 (1978-08-01), Shipman
patent: 609197 (1898-08-01), Fries
patent: 1190439 (1916-07-01), Marchfeld
patent: 1495820 (1924-05-01), Tierney
patent: 1568353 (1926-01-01), Tullis
patent: 1662450 (1928-03-01), Anderson
patent: 1863461 (1932-06-01), Bailey
patent: 1892446 (1932-12-01), Carr
patent: 2973984 (1961-03-01), Burke
patent: 4037440 (1977-07-01), Shabtai et al.
patent: 4100774 (1978-07-01), Solovieff et al.
patent: 4263795 (1981-04-01), Van Gompel

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