Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent
1998-03-04
1999-12-28
Herrmann, Allan D.
Movable or removable closures
With operator for movably mounted closure
Operating lever or link and closure swing about parallel axes
16 49, 49139, 49140, 49340, 49345, 49382, 185 40R, 185 45, 267156, 411195, 411197, E05F 1124, F03G 108
Patent
active
060064757
ABSTRACT:
An spring apparatus for use with an automatic swinging door closure system wherein the system includes a motor linked to a door via a gear train and a drive arm, the train including a plurality of gears including a first gear adjacent the motor, the motor driving the gears to move the door in either a clockwise or counter-clockwise direction and the apparatus for driving the gears in the direction opposite motor direction when motor power is cut off, the apparatus including a spring mounted within a housing which is linkable to the first gear in a first orientation to cause clockwise door movement and is linkable to the first gear in a second orientation to cause counter-clockwise door movement, the apparatus is easily modifiable so as to be configured in either of the first or second orientations and also includes a tension adjusting mechanism for adjusting spring tension.
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Mussa Donald G.
Schwantes James E.
Scott James R.
Slosiarek Michael L.
Treichel James A.
Herrmann Allan D.
Nabco Entrances Inc.
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