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. 09, 2001
Filed:
Sep. 29, 1998
Osamu Matsumoto, Tokyo, JP;
Masayuki Aota, Tokyo, JP;
Mamoru Sumida, Tokyo, JP;
Tsuyoshi Munezane, Hyogo-ken, JP;
Takao Kasai, Tokyo, JP;
Takuro Kohyama, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a sliding part includes: an injection molding step of injection-molding a compacted member of a molding compound which is a mixture of powder material equivalent to SUS440C, graphite carbon corresponding to an oxygen content of the material, and a binder; a degreasing step of heating the compacted member thus obtained by the injection molding step under a neutral atmospheric condition to remove substantially all of the binder from the compacted member; and a baking step of heating the compacted member which is degreased under a vacuum condition of 0.1333 Pa or less from a room temperature up to 1000° C. to reduce an oxygen content of the compacted member to 0.02% or less by the reaction of C+O→CO, and then heating the compacted member under an argon atmospheric condition of 133.3 to 3999 Pa for two hours after the temperature is increased up to 1250° C.