The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2025
Filed:
Mar. 29, 2022
Applicant:
Tadano Ltd., Kagawa, JP;
Inventor:
Shoji Nishimoto, Kagawa, JP;
Assignee:
TADANO LTD., Kagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66D 1/30 (2006.01); B66D 1/40 (2006.01); B66D 1/50 (2006.01); B66D 1/54 (2006.01); B66D 1/56 (2006.01);
U.S. Cl.
CPC ...
B66D 1/30 (2013.01); B66D 1/40 (2013.01); B66D 1/50 (2013.01); B66D 1/54 (2013.01); B66D 1/56 (2013.01);
Abstract
Provided is an estimation apparatus for estimating a number of wound layers of a wire rope in a crane including a boom, a winch drum, and the wire rope wound around the winch drum, the estimation apparatus being mounted on the crane, the estimation apparatus including: a calculation unit that calculates a delivery length of the wire rope; a detection unit that detects a rotational amount of the winch drum; and a control unit that estimates the number of wound layers, based on a difference in the delivery length of the wire rope and a difference in the rotational amount of the winch drum between a first orientation and a second orientation of the boom.