Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Patent
1989-06-08
1991-01-15
Smith, Gary L.
Movable or removable closures
With operator for movably mounted closure
Operator drives closure along guide
49360, 160188, E05F 1134
Patent
active
049843877
ABSTRACT:
An adapter unit for mechanically driven doors of the type such as garage doors are driven by a motor and guided at the sides thereof by guide rails mounted to a frame that defines the door opening. The adapter unit comprises an elongated member adapted to be mounted to the back side of the door receiving channel of one of the guide rails. The elongated member defines an elongated inverted U-shaped channel in which a chain is slidably received. A sprocket is rotatably mounted in the elongated member within a circular recess defined in the channel for engagement with the chain. The sprocket is further adapted to centrally engage a shaft of the motor to thus rotate therewith. A door drive mechanism is mounted at one end of the chain and is adapted to be removably coupled to a bracket provided on an inner lower part of the door. The sprocket and chain are adapted to remain engaged between the two extreme positions of the chain which correspond with the open and closed positions of the door. Therefore, upon actuation of the motor, the chain is displaced in the channel thereby causing movement of the door as it is linked thereto by the door drive mechanism engaged in the bracket.
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501 Manaras Auto Doors, Inc.
Meerkreebs Samuel
Milano Michael
Smith Gary L.
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