Overhead doors operating apparatus

Details Overhead doors operating apparatus Overhead doors operating apparatus

1985-03-05

1986-09-16

Shoop, Jr., William M.

Electricity: motive power systems

With particular motor-driven load device

Plural, diverse or diversely controlled load device

318 15, 318 16, H02K 714

Patent

active

046124853

ABSTRACT:
Overhead doors operating apparatus uses a single motor power unit to operate a selected one of a plurality of overhead doors through a selectively energized coupling, such as an electromagnetic clutch, or if desired, all of the doors in unison by energizing all the couplings. Thus only one motor power unit, instead of a power unit for each door, is needed to operate selectively one or more of the doors.

REFERENCES:
patent: 2961076 (1960-11-01), White et al.
patent: 3075400 (1963-01-01), Carlson
patent: 3353299 (1967-11-01), Castonguay
patent: 3576482 (1971-04-01), Rhee
patent: 3792332 (1974-02-01), Fuller
patent: 4001969 (1977-01-01), Hoobery
"Garage Door Openers", Consumer Reports, Nov. 1978, pp. 646-651.

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