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. 28, 1995
Filed:
Aug. 11, 1993
Applicant:
Inventor:
Juji Ojima, Aikawa, JP;
Assignee:
NHK Spring Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C / ;
U.S. Cl.
CPC ...
403120 ; 403163 ; 403 91 ; 403 24 ; 16308 ;
Abstract
A torsion bar for a slow-acting rotation shaft device is formed from a U-shaped wire rod so that hook portions formed at both ends of the torsion bar are distanced from each other by a length at least more than a diameter of the wire rod. Hook portions for latching are formed at each end and at the U-shaped bend of the torsion bar.