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:
Jun. 01, 2021
Filed:
Dec. 08, 2016
Kyodo Yushi Co., Ltd., Fujisawa, JP;
Nabtesco Corporation, Tokyo, JP;
Junichi Imai, Fujisawa, JP;
Ryosuke Ichimura, Kawasaki, JP;
Ryosuke Saito, Chigasaki, JP;
Ko Tanimura, Fujisawa, JP;
Hongyou Wang, Tokyo, JP;
Takahide Kumagai, Tokyo, JP;
Yasuyuki Hattori, Tokyo, JP;
KYODO YUSHI CO., LTD., Fujisawa, JP;
NABTESCO CORPORATION, Tokyo, JP;
Abstract
The invention provides a lubricant composition for an eccentrically oscillating speed reducer of planetary gear type, which is capable of extending the life of the speed reducer under high temperatures and keeping low input torque at low temperatures, and includes (a) a base oil containing a synthetic oil, (b) a hydrocarbon wax, and (c) at least one calcium salt selected from the group consisting of a calcium salt of petroleum sulfonic acid, a calcium salt of alkyl aromatic sulfonic acid, a calcium salt of oxidized wax, an overbasic calcium salt of petroleum sulfonic acid, an overbasic calcium salt of alkyl aromatic sulfonic acid, and an overbasic calcium salt of oxidized wax.