Garage door operation control apparatus

Details Garage door operation control apparatus Garage door operation control apparatus

1980-03-28

1982-08-17

Downey, Kenneth

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

49 28, 318266, E05F 1100

Patent

active

043442528

ABSTRACT:
A garage door operation control apparatus comprises a disc rotatable in interlocked relation with a door driving system, which disc actuates an upper limit switch and a lower limit switch at the door upper and lower limit positions respectively. The interlocked relation of the driving system and the disc may be cancelled thereby to adjust the responsive position of the limit switches.

REFERENCES:
patent: 3694664 (1972-09-01), Carli
patent: 3764875 (1973-10-01), Harris
patent: 4010408 (1977-03-01), Bailey
patent: 4055023 (1977-10-01), Gatland et al.
patent: 4263536 (1981-04-01), Lee et al.

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