Ikushun Ou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A crane includes a crane body, a boom, a hoisting winch, and a rope holding device pressing a rope wound around a drum of the hoisting winch against the drum. The rope holding device includes an oscillating arm whose proximal end is attached to a base of the hoisting winch using a support shaft and distal end oscillates in a direction close to or away from the drum, and a rope presser which is attached to a distal end of the oscillating arm, extends in an axial direction of the drum between a pair of flanges, and abuts against the rope wound around the drum. A weight member, which biases a distal end side of the oscillating arm in a direction close to the drum by the gravity with the support shaft as a fulcrum, is provided at the proximal end of the oscillating arm.
Type:
Grant
Filed:
September 5, 2019
Date of Patent:
September 21, 2021
Assignee:
SUMITOMO HEAVY INDUSTRIES CONSTRUCTION CRANES CO., LTD.
Abstract: A crane includes a crane body, a boom, a hoisting winch, and a rope holding device pressing a rope wound around a drum of the hoisting winch against the drum. The rope holding device includes an oscillating arm whose proximal end is attached to a base of the hoisting winch using a support shaft and distal end oscillates in a direction close to or away from the drum, and a rope presser which is attached to a distal end of the oscillating arm, extends in an axial direction of the drum between a pair of flanges, and abuts against the rope wound around the drum. A weight member, which biases a distal end side of the oscillating arm in a direction close to the drum by the gravity with the support shaft as a fulcrum, is provided at the proximal end of the oscillating arm.
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