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:
Aug. 18, 2009
Filed:
Mar. 02, 2006
Desheng Xia, Yamanashi, JP;
Koji Koyama, Yamanashi, JP;
Desheng Xia, Yamanashi, JP;
Koji Koyama, Yamanashi, JP;
Kito Corporation, Yamanashi, JP;
Abstract
An overload preventing apparatus of a hoist characterized in including a drive shaftfor driving a load sheave, a pressure receiving memberoutwardly fitted to the drive shaft, a drive memberfor transmitting a drive force from operating meansto the drive shaftby way of the pressure receiving member, a rotation drive memberincluding means of transmitting the drive force from the operating meansto the drive memberand releasing an engagement with the drive portionwhen the operating meansis applied with a torque equal to or larger than a predetermined torque value and an elastic membermounted along an axial direction of the drive member between a back face of the rotation drive memberand an inner side end face of the operating meansto pose a problem that a belleville spring is obliged to be used as urging means, and therefore, a stroke in the axial direction of the urging means is small, also a height of an engaging claw becomes small in accordance with the stroke of the belleville spring and a variation in a load relative to a height of the claw becomes large.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile