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:
Jul. 11, 1995
Filed:
May. 19, 1994
Toshio Takagi, Nagoya, JP;
TRW Steering Systems Japan Co., Ltd., Aichi, JP;
Abstract
A method for fastening an input shaft and a torsion bar together in a power steering mechanism, and the associated torsion bar. A ball-receiving hole is bored in the end of the torsion bar. The end of the torsion bar is inserted into a bore in the input shaft and a ball is pressed into the hole to provide an interference fit between the shaft and the bar. Subsequently, the peripheral edge of the hole in the torsion bar is elliptically deformed so as to retain the ball in the hole and the bar in the shaft. Since a portion of the opening is slightly diametrically broadened by the ball, the periphery of the portion closely contacts the inner wall of the input shaft, thereby strengthening the connection between the torsion bar and the input shaft.