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US 2007/0181269 A1Published application
Elevator Door System
AssigneeInventio AG
InventorPeter Spiess
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AssigneeInventio AG
InventorPeter Spiess
Estimating the term…
An elevator door system includes a motor, a vertical reel, and a door attached at a first end to the vertical reel for winding and unwinding thereupon. A force transmission device interconnects a second end of the door and a compensation device whereby the motor simultaneously drives the vertical reel and the compensation device having a variable diameter. In use, as the door is unwound from the vertical reel, the force transmission device is simultaneously wound upon the compensation device. Hence, not only is a thrust exerted on the door by the vertical reel, but a drag is exerted thereupon by the force transmission device. Furthermore, the compensation device has a variable diameter to compensate for, amongst other things, the changes in the diameter the door wound on the vertical reel. Hence, the tension in the force transmission device and the door can be kept substantially constant during operation.
An elevator door system including a motor rotating a vertical reel and a door attached at a first end to the vertical reel for winding and unwinding thereupon comprising:
An elevator door system comprising:
Dependencies are inferred from the claim text.