Perfected piston pump in particular a radial-piston pump for internal combustion engine fuel
US5979297A · kind A · utility
23Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/0426
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The pump has a number of cylinders arranged with their respective axes at a predetermined angular distance about a drive shaft; and a number of piss, each sliding inside a respective cylinder. The inner radial end of each piston is fitted with a pad engaging a respective flat portion of a cam rotating on an eccentric portion of the drive shaft; and, to ensure against seizure, each pad has a cavity inside which is fitted a shoe having at least one layer of self-lubricating material engaging the respective flat portion of the cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.