B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 15/06 (2006.01) B66C 13/06 (2006.01) B66D 1/54 (2006.01)
Patent
CA 2169878
An indicating device is provided which includes a pivotal member mounted on a base plate attached to the frame of the trolley on which the hoist is supported, and a pair of spaced apart projections extending from the pivotal member and between which a rope for lifting a load is disposed at a desired orientation relative to the vertical. Movement of the rope from the desired orientation will cause it to engage one of the rods and move the rod along with the pivotal member in one of two opposite directions depending on the direction of movement of the rope from its desired orientation. A pair of fixed members are also mounted on the base plate and are each positioned in a different one of the two opposite directions of movement of the pivotal member. Sensing detectors are mounted on the fixed members and are responsive to movement of the pivotal member when engaged and moved by the rope to indicate the movement and direction of the pivotal member and thereby the movement and direction of movement of the rope from the desired orientation.
Harnischfeger Corporation
Ridout & Maybee Llp
LandOfFree
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