E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 15/12 (2006.01) E05F 3/00 (2006.01)
Patent
CA 2072180
ABSTRACT "REGENERATIVE FEEDBACK DOOR CONTROL DEVICE WITH ONE- WAY CLUTCH" A device for closing swinging doors of the type utilizing a rotating member to compress a spring during door opening to store energy in the spring to effect a closing of the door is provided with a driving connection to a d.c motor/generator effective to cause rotation of the motor during a closing movement of the door. The motor/generator acts as a generator during the closing with the generated electrical energy fed back to the motor/generator to retard rotation of the rotor, providing a brake on the closing movement of the door. The feedback circuitry includes a switch disabling or diminishing the braking during the final degrees of closing movement as well as a variable setting device allowing control of braking force. June 1, 1992 c:\890\specs\P912850
Smart & Biggar
Thomas Industries Inc.
LandOfFree
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