Door counterweight assembly

Details Door counterweight assembly Door counterweight assembly

E - Fixed Constructions

05

F

E05F 1/04 (2006.01) E05F 7/06 (2006.01) E05F 11/04 (2006.01) E06B 1/56 (2006.01)

Patent

CA 2175025

A door counterweight assembly positionable on a door shaft. A pair of spaced disks are mounted on the door shaft, and a tape drive member extends between the disks parallel to the door shaft. A continuous flexible tape has a portion surrounding the shaft. The flexible tape is positioned between the shaft and the drive member. The tape includes another portion which supports a counterweight. Rotation of the shaft folds the tape in a generally circular configuration to increase the counterweight torque applied to the shaft.

Ensemble de contrepoids de porte pouvant être installé sur un arbre de manoeuvre de porte. Deux disques espacés l'un de l'autre sont installés sur cet arbre de manoeuvre entre lesquels un mécanisme d'entraînement à sangle est disposé parallèlement à l'arbre. Sur une partie de sa longueur, la sangle en question, souple et continue, s'enroule autour de l'arbre, et elle va de l'arbre à l'élément d'entraînement. Une partie de cette sangle soutient également un contrepoids. L'arbre, en tournant, plie cette sangle selon une configuration généralement circulaire, ce qui permet d'augmenter l'importance du moment que le contrepoids applique à l'arbre.

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