Swing door operating system
First Claim
1. An automatic door actuating system for actuating a hinged door in opening and closing displacement, said system having a reversible electric motor mounted adjacent the free edge of the door, said motor being in driving relation with pulley means, said pulley means engaging tensioned flexible line means, said line means extending substantially horizontally between a first attachment point on a lintel portion of said door frame and a second attachment point located adjacent said door free edge when said door is in a fully open position;
- and means to energize said motor in a selected mode of opening and closing rotation, whereby, upon energization of said motor said pulley means engages said line means to draw said door in a respective opening/closing displacement.
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Accused Products
Abstract
A door actuating system has a fractional horsepower motor mounted on the door adjacent its free edge, driving a clutch connected to a duplex capstan pulley that is wrapped by two tensioned flexible static lines, for opening/closing movement ‘along the line’. The motor also drives a gear that engages a rack projecting from the door frame, to displace the door relative to its frame. Rotation of the gear is read by a rotary encoder, which feeds a microprocessor, to continuously monitor the location, speed and direction of motion of the door, for both the ‘on’ and the ‘off’ condition of the electric motor. A latching clip over-rides action of the original door latch.
14 Citations
12 Claims
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1. An automatic door actuating system for actuating a hinged door in opening and closing displacement, said system having a reversible electric motor mounted adjacent the free edge of the door, said motor being in driving relation with pulley means, said pulley means engaging tensioned flexible line means, said line means extending substantially horizontally between a first attachment point on a lintel portion of said door frame and a second attachment point located adjacent said door free edge when said door is in a fully open position;
- and means to energize said motor in a selected mode of opening and closing rotation, whereby, upon energization of said motor said pulley means engages said line means to draw said door in a respective opening/closing displacement.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification