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:
May. 05, 1998
Filed:
Oct. 31, 1996
Applicant:
Inventors:
Shuhei Adachi, Iwata, JP;
Junichi Inami, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
2988844 ;
Abstract
A method of forming and a cylinder head for a reciprocating machine wherein the valve seat inserts can be formed from relatively small insert rings. The insert rings are fixed in place and are configured so that the end of the passage terminating in the chamber of the machine has substantially no straight sections and progressively increases in diameter toward the chamber which it serves.