Directional indicating device for detecting improper orientation

Details Directional indicating device for detecting improper orientation Directional indicating device for detecting improper orientation

1995-08-24

1997-01-28

Brahan, Thomas J.

Traversing hoists

Having means to prevent or dampen load oscillations

Antisway

212282, B66C 1306

Patent

active

055970796

ABSTRACT:
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.

REFERENCES:
patent: 2806610 (1957-09-01), Goertz
patent: 4135632 (1979-01-01), Berkel
patent: 4258484 (1981-03-01), Lansard
patent: 4273243 (1981-06-01), Locher

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