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:
Oct. 20, 1993
David M Groh, Battle Creek, MI (US);
Chris P Kaniut, Battle Creek, MI (US);
Steven L Worthington, Battle Creek, MI (US);
Martin W Uitvlugt, Battle Creek, MI (US);
Scott C Johnson, Marshall, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A method for making a direct acting tappet in which an oil groove and interior structure defining a weld interface are formed in a cupshaped body by a rolling process, the body is heat treated, a web and hub structure is positioned against the weld interface and the resulting assembly is subjected to a localized, capacitive discharge welding process in the weld interface area. The weld interface is formed to a specific shape to enhance the integrity of the weld. Further, a baffle member can be assembled to the web and hub structure prior to its positioning within the body member.