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:
Oct. 26, 1999
Filed:
Jul. 17, 1998
Toshikatsu Koike, Iwata, JP;
Nanoki Tsuchida, Iwata, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
An aluminum alloy for pistons and a method of manufacturing pistons making use of said alloy, enabling casting without sacrificing the ease of casting, and restricting deformation and melting at high temperatures, and fatigue and wear caused by high speed sliding movement. The aluminum alloy contains Si+SiC in an amount in the range of 8% to 20% by weight, and SiC in an amount of 2% or more by weight. An ingot containing the aluminum alloy is melted, sprayed in the state of mist, rapidly cooled and solidified into rapidly cooled powder. The rapidly cooled powder is heated and solidified into a blank from which the piston is forged, heat-treated, and machined.