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. 10, 2017
Filed:
May. 19, 2015
Toshiyuki Kabata, Kanagawa, JP;
Kumiko Seo, Kanagawa, JP;
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
Teruyoshi Tanaka, Kanagawa, JP;
Toshiyuki Kabata, Kanagawa, JP;
Kumiko Seo, Kanagawa, JP;
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
Teruyoshi Tanaka, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Dow Corning Toray Co., Ltd., Tokyo, JP;
Abstract
A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 μm. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.