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. 04, 1991
Filed:
Jan. 19, 1990
Applicant:
Inventor:
Hideo Seko, Gifu, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
1231 / ; 123 / ;
Abstract
A valve seat arrangement is provided in which a ceramic valve seat is secured to a valve seat holder. The valve seat holder is directly connected to the cylinder head of the block of the internal combustion engine between the exhaust passage and the combustion chamber of the engine. The cylinder head is made of cast aluminum. Due to the differences in the coefficient of heat of the various metals, the ceramic valve seat will be securely retained in the cylinder head.