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US 5,207,935 AGranted
Wheel bearing grease
AssigneeAmoco Corporation
InventorJohn A. Waynick
Life of this patent
Estimating the term…
Abstract
An improved smoother extreme pressure wear-resistant wheel bearing grease provides high temperature bearing life. These qualities are attributable to a special combination of additives blended in the greases, including: succinate, sulfonate, phosphate, carbonate, and sodium nitrite.
Claims19
A wheel bearing grease, comprising:
- from about 20% to about 95% of a base oil;
- a thickener;
- a succinate-containing texture improving additive for imparting a substantially smooth texture to said grease;
- a carbonate selected from the group consisting of a carbonate of a Group 1a alkali metal and a carbonate of a Group 2a alkaline earth metal;
- and
- a phosphate selected from the group consisting of a phosphate of a Group 1a alkali metal and a phosphate of a Group 2a alkaline earth metal.
3 more elements
A wheel bearing grease, comprising:
- from about 20% to about 95% of a base oil;
- a thickener;
- phosphate and carbonate extreme pressure wear-resistant additives;
- oil soluble or oil disperible metal salts of sulfonic acids and succinic acids;
- said sulfonic acids comprising at least one member selected from the group consisting of petroleum sulfonic acid, alkylbenzene sulfonic acid, alkylnapthylene sulfonic acid, anthracene-containing sulfonic acid, and phenalene-containing sulfonic acid;
- and
- said succinic acid comprising an alkylated succinic acid.
4 more elements
A wheel bearing grease, comprising by weight:
- from about 20% to about 95% base oil;
- from about 0.1% to about 30% polyurea thickener;
- from about 0.01 to about 5% sodium nitrite for enhancing high temperature bearing life;
- from about 0.1% to about 10% amine antioxidant;
- from about 0.02% to about 10% extreme pressure wear-resistant additives comprising a carbonate and a phosphate;
- from about 0.1% to about 10% rust-inhibiting texture improving additives comprising a metal succinate salt and a metal sulfonate salt, said metal succinate salt and said metal sulfonate salting cooperating with said carbonate and said phosphate for further enhancing extreme pressure wear-resistance of said grease;
- said carbonate, said phosphate, said metal succinate salt, and said metal sulfonate salt, each comprising at least one member selected from the group consisting of a Group 1a alkali metal and a Group 2a alkaline earth metal;
- said alkali metal being selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, and francium;
- and
- said alkaline earth metal being selected from the group consisting of beryllium, magnesium, calcium, strontium, and barium.
7 more elements
Dependencies are inferred from the claim text.