Rachet system for winding a rolling door assembly

Details Rachet system for winding a rolling door assembly Rachet system for winding a rolling door assembly

E - Fixed Constructions

06

B

E06B 9/56 (2006.01) B25B 13/50 (2006.01) E06B 9/174 (2006.01) E06B 9/62 (2006.01)

Patent

CA 2425108

A ratchet-like system for winding a rolling door assembly. The ratchet- like system includes a support bracket, a cam, and a biasing device. The support bracket is preferably mounted onto a fixed structure of the rolling door assembly. The cam is pivotally mounted about the support bracket and positioned adjacent to a portion of an overhead shaft of the assembly. The cam is shaped and sized to cooperate with this portion of the overhead shaft between a first position, where the cam allows rotation of the overhead shaft along a first direction, and a second position, where the cam has a surface engaged with the overhead shaft and where further rotation of the overhead shaft along a second direction, opposite to the first direction, is blocked by the cam. The biasing device is used for urging the surface of the cam onto the overhead shaft. The ratchet-like system is particularly useful for adjustably controlling the rotation of the overhead shaft of the rolling door assembly during the winding thereof.

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