Lubricant composition for a speed reducer, and speed reducer
US11053451B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a lubricant composition for an eccentric oscillating planetary gear type speed reducer comprising the following components (a) to (d): (a) a base oil containing a synthetic oil; (b) at least one calcium salt selected from the group consisting of calcium salts of petroleum sulfonic acids, calcium salts of alkyl aromatic sulfonic acids, calcium salts of salicylates, calcium salts of phenates, calcium salts of oxidized waxes, overbased calcium salts of petroleum sulfonic acids, overbased calcium salts of alkyl aromatic sulfonic acids, overbased calcium salts of salicylates, overbased calcium salts of phenates, and overbased calcium salts of oxidized waxes; (c) an antioxidant; and (d) a glycerin fatty acid ester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.