Garage door operator mechanism

Details Garage door operator mechanism Garage door operator mechanism

1984-05-18

1986-12-16

Kannan, Philip C.

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

49 28, 49139, 49362, E05F 1500

Patent

active

046286365

ABSTRACT:
An automatic radio actuated mechanism for opening and closing panels, such as a garage door, makes use of an electric motor to rotate a specially constructed spiral drive screw and move a traveler along a track, the traveler being connected to the door to pull the door open or push the door shut. Included in the mechanism is a camming arrangement for precisely adjusting the full open and full closed positions by action of an electronic circuit which activates the motor. For reversing the operating direction of door movement in the event such movement should be obstructed, the motor housing is mounted in a manner allowing it when restrained to swing for a limited distance, one way or the other, thereby to actuate a switch in the electronic circuit for reversing movement of the door.

REFERENCES:
patent: 2589480 (1952-03-01), Curtis
patent: 2751219 (1956-06-01), Dodge
patent: 3435558 (1969-04-01), Kruse
patent: 3526994 (1970-09-01), Delaney
patent: 3608612 (1971-09-01), Pemberton
patent: 3625328 (1971-12-01), Carli
patent: 3996697 (1976-12-01), Bailey et al.
patent: 4107877 (1978-08-01), Lee
patent: 4131830 (1978-12-01), Lee et al.
patent: 4147073 (1979-04-01), Mercier
patent: 4274227 (1981-06-01), Toenjes

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