Piston ring coating
US5713324A · kind A · utility
13Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Apr 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J9/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for preventing microwelding of a piston ring installed in a circumferential groove of a piston, wherein the ring has at least one piston groove engaging surface which is coated with thermal set resin, polytetrafluoroethylene and molydisulfide. This composition provides critical lubrication during the piston and piston ring break-in period and prevents localized high pressure, and high temperature areas which promote microwelding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.