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:
Sep. 06, 2022
Filed:
Mar. 08, 2019
Tadano Ltd., Kagawa, JP;
Hiroyuki Hayashi, Kagawa, JP;
TADANO LTD., Kagawa, JP;
Abstract
Provided is a crane () comprising: a boom () capable of being raised, lowered, and telescoped; a wire rope () being suspended from the boom (); a winch () for winding and unwinding the wire rope (); and a hook () being raised and lowered by the winding and unwinding of the wire rope (). The crane further comprises a spooling operation instrument () for enabling commanding an operation state of the winch (). When the hook () is raised to a height at which the hanging length d is a prescribed value by an operation of the spooling operation instrument (), the boom () is raised and extended while the wire rope () is unwound such that the prescribed hanging length d is maintained, thereby sustaining the elevation operation of the hook ().