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:
Jun. 12, 1990
Filed:
May. 02, 1989
Applicant:
Inventor:
Shigemitu Adachi, Aichi, JP;
Assignee:
Tokai TRW & Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B23G / ; B21J / ;
U.S. Cl.
CPC ...
72356 ; 10 1 / ; 10 2 / ;
Abstract
A method of forming a tappet adjusting screw is disclosed herein. In this method, a wire material is cut to a predetermined length, the cut flaws at one end of the material are removed and simultaneously the end face of the other end of the material is provided with a linear groove. The end face of the first end of the material is processed to a convex spherical shape and this end of the material is reduced in diameter and a flange is formed about the convex spherical end face, this flange then being sheared off.