Grease composition for electric power steering device, and electric power steering device
US9873851B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided are both a grease composition for an electric power steering device and an electric power steering device. The grease composition can keep a sufficiently low coefficient of friction in a sliding area between a steel and a resin over a long period, is less susceptible to being removed from the sliding area, does not cause break down of an oil film, and thus can minimize the occurrence of stick-slips. A grease composition for an electric power steering device, containing a synthetic hydrocarbon oil which exhibits a density of 0.75 to 0.95 g/cm3 at 15° C., a saturated aliphatic amide compound, boron nitride, a glycerin fatty acid partial ester, and a metal soap-based thickener; and an electric power steering device using the grease composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.