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. 20, 1997
Filed:
Dec. 29, 1995
Applicant:
Inventors:
Hayato Ikeda, Kariya, JP;
Hiromi Nagata, Kariya, JP;
Yuji Kaneshige, Kariya, JP;
Masaaki Nishimoto, Kariya, JP;
Assignee:
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
921691 ; 92 71 ; 2988806 ; 417269 ;
Abstract
It is an object of the present invention to secure excellent slidability between a piston and cylinder bore even under severe running conditions. Cylinder blocks are made of aluminum alloy comprising, by weight, 1.5 to 5.0% of Cu, 13 to 16% of Si, 0.5% or less of Mg, 1.0% or less of Zn, 1.0% or less of Fe, and the remainder of Al, and exfoliated recessions of primary Si crystal exist on the inner surface of a cylinder bore. The large number of minute exfoliated recessions function as oil reservoir spots.