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:
Jan. 10, 1984
Filed:
Mar. 08, 1983
Applicant:
Inventors:
Yoshiaki Takagi, Tsurugashimamachi, JP;
Takeshi Sugawara, Oimachi, JP;
Setsuo Nii, Chino, JP;
Takayuki Matsuda, Okaya, JP;
Assignees:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Teikoku Piston Ring Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
251368 ; 251359 ; 1231 / ; 2915 / ;
Abstract
The present invention relates to a dual-layer sintered valve seat ring having high stiffness and strength. The features of such ring are: fusion infiltration of Cu into the pores of a ferrous sintered body; hard alloy particles dispersed in the matrix of the valve seat body; the composition of the base and the ferrous sintered body; high density; and, diffusion of an alloying element of the hard particles around them and into the matrix.