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:
Feb. 24, 2004
Filed:
Jul. 26, 2001
Tanehira Amano, Nagano, JP;
Takao Kobayashi, Nagano, JP;
NHK Spring Co., Ltd., Kanagawa, JP;
Abstract
A tensioner, in which a bearing of the drive shaft is not necessary and the initial load of the torsion spring is maintained when the tensioner is disassembled, two shaft members that compose a set and that are engaged by screw portions, and a spring that is inserted in the driving unit by fastening onto the shaft members the hooking portions that are located at each end of the spring. The spring is inserted in the set of the shaft members under an appropriate windup condition. One shaft member moves forward from the loaded strength by the spring. The tensioner also includes, beside the driving unit, a case into which the driving unit is inserted, and a system that prevents the driving unit from coming off the case.