Rapid dismount security door

Details Rapid dismount security door Rapid dismount security door

1986-04-07

1987-06-09

Kannan, Philip C.

Movable or removable closures

Removable closure

Releasable means on closure

16229, 16262, 49390, 49395, E05C 2102, E05C 900, E05D 1500

Patent

active

046710159

ABSTRACT:
A quickly demountable security-conscious door having a four-pin engagement with the adjacent door frame and having a plurality of rack and pinion mechanisms for movement of the hinge pin and lock bolt members into engagement positions with respective receptacles located in the door frame member. The door includes weather stripping provisions, operating knob rotational limits, and operating shaft spring assistance and uses Teflon.RTM. or other low-friction materials in appropriate frictional engagement positions.

REFERENCES:
patent: 343794 (1886-06-01), Brown
patent: 547387 (1895-10-01), Taylor
patent: 726577 (1903-04-01), Schiek
patent: 2756469 (1956-07-01), Cattermole et al.
patent: 3197807 (1965-08-01), Persson
patent: 3261029 (1966-07-01), Beneke, Jr.
patent: 3991595 (1976-11-01), Bahry et al.
patent: 4288944 (1981-09-01), Donovan
patent: 4307542 (1981-12-01), Lense
patent: 4414777 (1983-11-01), Masacchia

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