Two-masted lifting apparatus

Details Two-masted lifting apparatus Two-masted lifting apparatus

1976-12-10

1977-09-27

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Multiple lifters

B66F 712

Patent

active

040506738

ABSTRACT:
A two-masted lifting apparatus particularly adapted to lift a weighty object such as a vehicle or the like to a desired height and then incline it at a desired angle in either direction. The two-masted lifting apparatus comprises two opposing upright masts on each of which a carriage for supporting the object is slidably mounted and a height-difference detecting means. Both carriages are independently hoisted up or down along the respective masts by separate driving means, and the height-difference detecting means is adapted to detect the height-difference between the two carriages and restrict the further ascent or descent of one of the two carriages when the height difference between them has reached a predetermined limit.

REFERENCES:
patent: 2593635 (1952-04-01), Walker
patent: 2975560 (1961-03-01), Leonard
patent: 3327997 (1967-06-01), Zenke

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