Oil-free chain
US7914409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2008 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Jul 3, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16G13/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an oil-free roller chain, the inner faces of the outer link plates have recesses that receive the ends of bushings, and the inner faces of the inner link plates have recesses that receive the ends of rollers surrounding the bushings. Each such recess is formed by punching, so that the outer surface of each plate has a bulged portion opposite each recess. The diameters of the bulged portions are greater than the diameters of the corresponding recesses. The bushing can have an oil passage located midway between its ends and serving as an oil reservoir supplying oil to the gap between the bushing and the roller and between the bushing and a connecting pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.