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:
Sep. 23, 1986
Filed:
Oct. 23, 1984
Kenji Yoshiga, Funabashi, JP;
Fuji Koki Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A tool, used for forming a groove in a valve seat, having a tool main body which has a hardness greater than that of the valve seat, and an end portion with a circumferential surface which has a shape corresponding to the valve seat and is brought into linear or surface contact with the valve seat in an annular shape, and a wire which has a hardness greater than that of the valve seat and which is clamped between a circumferential edge of the valve seat and the end portion of the tool main body so as to cross the circumferential edge of the valve seat, wherein the tool main body is pressed until the circumferential surface of the end portion of the tool main body is brought into linear or surface contact with the valve seat in an annular shape and the movement of the tool main body is stopped, thereby forming an impression of the wire on the valve seat.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile