Spring assisted swing door operator

Details Spring assisted swing door operator Spring assisted swing door operator

2006-12-05

2006-12-05

Strimbu, Gregory J. (Department: 3634)

Movable or removable closures

With operator for movably mounted closure

Operating lever or link and closure swing about parallel axes

C049S386000

Reexamination Certificate

active

07143547

ABSTRACT:
A motorized universal swing door operator includes a motor driving a gear reduction drive mechanism having an output shaft adapted to be connected to a swing door operating arm. The output shaft supports a sprocket around which is trained a chain having opposite ends connected to a link supported on a shaft which is connected to a return spring. The return spring stores and returns energy regardless of the direction of rotation of the output shaft so as to provide the universal operating capability of the operator.

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