Balancing device for a raisable-curtain goods-handling door

Details Balancing device for a raisable-curtain goods-handling door Balancing device for a raisable-curtain goods-handling door

E - Fixed Constructions

05

F

E05F 1/04 (2006.01) E05F 11/00 (2006.01) E06B 9/62 (2006.01)

Patent

CA 2092795

A B S T R A C T Balancing apparatus for a raisable-curtain goods- handling door, the apparatus comprising a shaft on which a curtain is wound up or on which curtain-raising straps are wound up, said shaft carrying two drums onto which are wound belts from which two counterweights are suspended, wherein the "long" belt from which a "long" counterweight of "long" mass M6 is suspended has a length that corresponds to the full stroke of said curtain, whereas the "short" belt of the "short" other counterweight of "short" mass M5 is shorter and is fastened on the corresponding drum in such a manner as to enable it to wind in either direction thereon.

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