Two-masted lifting apparatus
AssigneeYasui Sangyo Col. Ltd.
InventorMatsuo Nishimura
Life of this patent
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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.
Claims6
A two-masted lifting apparatus particularly adapted to lift up a weighty object such as a vehicle or the like to a desired height and incline said lifted object at a desired angle, said apparatus comprising:
- a base,
- a pair of upright masts disposed on said base and opposing each other,
- a first carriage slidably mounted to one of said masts,
- a second carriage slidably mounted to the other of said masts,
- a pair of driving means adapted to hoist up or down said carriages independently of each other along the respective masts,
- supporting arms for supporting the object to be lifted, each supporting arm being slidably supported on the carriage so as to be movable toward or away from the opposing mast, and
- a height-difference detecting means adapted to detect the height difference between said carriages and restrict the further ascent or descent of one of the two carriages when the detected height difference between the two carriages has reached a predetermined limit.
Dependencies are inferred from the claim text.