Obstacle detector for a descending or ascending load

Details Obstacle detector for a descending or ascending load Obstacle detector for a descending or ascending load

1982-05-07

1984-03-27

Taylor, Billy S.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

49 28, 254284, 254316, B66D 148, E05F 1502

Patent

active

044389035

ABSTRACT:
An obstacle detector is disclosed, being designed to automatically brake a descending or ascending load suspended on at least two spaced cables, should an obstacle be encountered in the path of the load. The detector comprises at least two winch drums and a rotatable horizontal rod having at least two laterally-spaced levers projecting radially therefrom and inclined on opposite sides of the rod. One end of each cable is secured to a drum, passes through a pulley supporting the load and is secured to a corresponding lever at its other end. A change in the tension of one of the cables, due to an obstacle, results in a small rotation of the rod, thus activating an electric sensing device which effectively shuts down the motor driving the winch drums.

REFERENCES:
patent: 2811262 (1957-10-01), Schaitberger
patent: 4199133 (1980-04-01), Gagnon et al.
patent: 4271934 (1981-06-01), Gagnon et al.

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