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. 23, 1998
Filed:
Sep. 13, 1996
Applicant:
Inventor:
Shuhei Adachi, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
2988806 ; 2988844 ; 2191171 ; 219111 ; 1231888 ;
Abstract
An improved method of forming a bonded valve seat for a cylinder head wherein the configuration of the insert ring and cylinder head recess is such to ensure good bonding over the entire area and the proper amount of sinking of the insert ring into the cylinder head. The bonding process for the exhaust valve seats is different from that of the intake valve seats.