US Patent 7803236 Valve spring retainer made of titanium

Patent 7803236 was granted and assigned to Honda on September, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Honda

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

78032360

Patent Inventor Names

Kosuke Doi0

Hiroyuki Horimura0

Date of Patent

September 28, 2010

Patent Application Number

110952020

Date Filed

March 30, 2005

Patent Primary Examiner

Roy King

Patent abstract

To provide a valve spring retainer made of titanium, capable of reduction in raw material cost and processing cost, a valve spring retainer is formed out of a titanium alloy raw material composed of 0.8 wt %≦Fe≦1.2 wt %, 0.24 wt %≦O≦0.32 wt %, 0.02 wt %≦N≦0.05 wt %, and balance Ti containing unavoidable impurities through cold forging.