B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
B66B 5/24 (2006.01) B66B 5/04 (2006.01) F16D 59/00 (2006.01) F16D 65/14 (2006.01)
Patent
CA 2175432
An elevator governor rope brake assembly is disclosed for slowing governor rope movement upon the occurrence of unintended movement of an elevator cab. The assembly comprising a governor sheave over which a governor rope passes, with a pivotally mounted brake disposed about its outer circumference on a pivot arm for slowing the governor rope movement. The pivotally mounted brake being capable ofpivoting along a clockwise and counter-clockwise arcuate path, each of the arcuate paths intersecting the outer circumference of the governor sheave at symmetricallocations at an angle sufficient for the pivotally mounted brake to engage the governor rope with sufficient force to slow the governor rope movement. Spring loaded releasing detents are used for initially positioning the pivotally mounted brake vertically. Flyweights on the governor sheave actuate the detents and release the pivotally mounted brake from the initial vertical position upon the occurrence of unintended movement of the elevator cab. The flyweights also provide a force to the pivotally mounted brake in a direction consistent with the governor rope's movement, thereby urging the pivotally mounted brake to arc in the desired braking direction.
Gowling Lafleur Henderson Llp
Otis Elevator Company
LandOfFree
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