Dry lubricant
US5898022A · kind A · utility
Inventor
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A light-duty, multi-purpose lubricant particularly formulated for use on the diverse bearing surfaces mechanisms which operate in a dirty or dusty environment, such as bicycle chains. The lubricant comprises an insoluble bond weakening agent, preferably metallic soaps such as Calcium Stearate, in suspension in a volatile solvent-based solution of wax and oil. After application and evaporation of the solvent the composite dry lubricant exhibits good penetration and load bearing properties without the dirt-retaining character of oils or greases. The undissolved particles of the bond weakening agent combine with dirt particles to break-down portions of the lubricant into a dry flaky particles which are sloughed off the mechanism. Soluble waxes having different solid phase crystalline structures may be blended with the paraffin to reduce the rate of sloughing. The amount of solvent may be adjusted or eliminated depending on the application. A surfactant can be added provide for coating wet mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.