Back to results
US 2018/0237723 A1Published application
Drive device, image forming apparatus, and grease composition
AssigneesRicoh Company, Ltd., Dow Corning Toray Co., Ltd.
InventorsToshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
Life of this patent
Estimating the term…
Abstract
A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition 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.
Claims6
A grease composition comprising:
- a hydrocarbon base oil;
- a thickener including lithium soap;
- and
- a solid lubricant including an olefin resin powder, wherein
- a weight ratio between the hydrocarbon base oil and the lithium soap is in a range of 94.5:5.5 to 96.0:4.0, and
- a consistency of the grease composition is in a range of 360 to 400 as measured by Japanese Industrial Standard K2220.
3 more elements
Dependencies are inferred from the claim text.