Double action door closure mechanism

Details Double action door closure mechanism Double action door closure mechanism

1980-11-10

1983-01-25

Bell, Paul A.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Checks and closers

Spring and gear

16 69, 16 79, 16DIG10, E05F 300

Patent

active

043695450

ABSTRACT:
A pinion 9 attached to a door meshes with two parallel racks 10, 11 which face each other. A piston 14, connected by rods 29 to a rotatable lever 25 of a restoration assembly 4 which has a return spring 26 and a shock absorber 27, has an L-shaped pivotable hook 21 behind which a pin 12 of one of the two racks catches at the beginning of the opening. At the end of the closing, immobile stop 17 raises hook 21 to free pin 12. The same process occurs with the other rack to open the door in the other direction. The parts assemble in such a way that the door closure is not very thick and can be mounted directly inside a section of the door.

REFERENCES:
patent: 1323338 (1919-12-01), Voight
patent: 1759474 (1930-05-01), Volquardsen
patent: 1989908 (1935-02-01), Bohnsack et al.
patent: 2471707 (1949-05-01), van Veen et al.
patent: 3624864 (1971-12-01), Marr

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