Two-piece piston assembly with skirt having pin bore oil ducts
US6494170B2 · kind B2 · utility
11Cited by
29References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2201/021
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A duct from near the top of the skirt of a two-piece piston carries lubricant to the skirt pin bore, on each side of the skirt, and lubricates the pin joint. The skirt is provided with a lubricant passage, such as from a shaker tray, to the pin bore on each side of the pin joint of the skirt, piston crown struts, and wrist pin on which a piston connecting rod is joined. Fluid sprayed against the crown descends onto the skirt and some passes through the above-mentioned lubricant ducts or passages for direct, continuous lubrication of the pin joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.