Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Patent
1990-04-30
1991-04-30
Herrmann, Allan D.
Movable or removable closures
With operator for movably mounted closure
Operator drives closure along guide
24 31R, 24265R, 49200, 74 8921, 160189, 474144, E05F 1516, F16H 1906
Patent
active
050106880
ABSTRACT:
A garage door operator for moving a garage door between open and closed posiitons includes a head unit for being held by a support structure positioned remote from the door with the head unit having a motor and a drive wheel with spaced teeth on its periphery for being driven by the motor. The operator also includes an elongate rail having a first end which is held by a support structure disposed adjacent and above the door with the rail including a pulley located adjacent the first end. The rail also includes a second end for being held adjacent to and in alignment with the drive wheel. The operator also includes a drive belt assembly for training about the drive wheel and the pulley and for being supported by the rail. The belt assembly includes a length of a plastic belt with teeth on one surface thereof matching the teeth on the drive wheel. The belt further assembly further includes a trolley for connection to the garage door and a first connector for joining one of the plastic belt to one end of the trolley. The connector includes a belt clip including a pair of spaced, aligned side walls with one side wall having an inside surface with undulations corresponding to the teeth of the plastic belt. The connector further includes a clip holder deformable from an as-formed position in which the holder can receive the side walls flanking the belt with the belt teeth aligned with the undulations, to a deformed position in which the holder firmly holds the side walls with the belt positioned therebetween.
REFERENCES:
patent: 2084733 (1937-01-01), Kahliff
patent: 3683710 (1972-08-01), MacFarland
patent: 3722141 (1973-03-01), Miller
patent: 4114473 (1978-09-01), Pollak
patent: 4231191 (1980-11-01), Ellmore
patent: 4330960 (1982-05-01), Hasemann et al.
patent: 4422396 (1983-12-01), Szostak
patent: 4648855 (1987-03-01), Palloch et al.
patent: 4885872 (1989-12-01), Chang et al.
patent: 4912812 (1990-04-01), Henn et al.
The Sears Best/Craftsman Owners Manual Garage Door Opener, 1988.
The DISOGRIN catalog.
Bernal catalog (in German) Garagentorantriebe Ferngesteuert.
Dombrowski Kenneth J.
Ergun Joseph
Herrmann Allan D.
Laub David W.
The Chamberlain Group, Inc.
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