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. 09, 1993
Filed:
Jan. 22, 1992
Applicant:
Inventor:
Karl-Ludwig Grell, Aurachtal, DE;
Assignee:
INA Walzlager Schaeffler KG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; F01L / ; F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9051 ; 2988843 ;
Abstract
A light metal tappet particularly for the timing gear of an internal combustion engine comprising a tappet base body and a steel plate anchored at the contact face for the control cams of the timing gear and having a hardened surface, characterized in that the steel plate is made of an austenitic base material which is carbon dispersion hardened, has the same coefficient of thermal expansion as aluminium and comprises a nitrided surface.