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. 17, 1987
Filed:
May. 10, 1985
Applicant:
Inventors:
Robert V Vickers, Chagrin Falls, OH (US);
Peter D Sachtjen, South Russell, OH (US);
Assignee:
Tocco, Inc., Boaz, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148127 ; 148130 ; 148154 ; 219 1043 ; 219 1057 ; 1231 / ;
Abstract
An induction hardened valve seat insert is provided with a ridged outer surface which establishes a mechanically locked engagement with the wall of the insert bore during the induction heating cycle.