Integral device for garage door opener

Details Integral device for garage door opener Integral device for garage door opener

1982-09-29

1984-09-25

Kannan, Philip C.

Movable or removable closures

Optionally moved, manually, or by motor

49200, 74625, 160189, E05F 1500

Patent

active

044729103

ABSTRACT:
An improved closure operator as for example for a garage door opener wherein a motor is coupled to the drive shaft of the door at one end thereof to drive pull-up and pull-down pulleys and a clutch mechanism is provided between the drive motor and the drive shaft which can be decoupled by moving a lever arm so as to disconnect the motor from the drive shaft to allow the door to be manually opened or closed as, for example, in the event of power failure. The unit results in a substantial simplification over prior art garage door operators which require a rail and trolley mechanism for opening and closing the door.

REFERENCES:
patent: 1465695 (1923-08-01), Stewart
patent: 2096251 (1937-10-01), Knight et al.
patent: 2841724 (1958-07-01), Brown
patent: 2882044 (1959-04-01), Ginte
patent: 3147001 (1964-09-01), Purdy
patent: 3311159 (1967-03-01), Stansberry
patent: 4085629 (1978-04-01), Fogarollo
patent: 4274227 (1981-06-01), Toenjes

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