Pump impeller
US4734008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Jun 20, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D5/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An open-vane regenerative impeller for a fuel pump. The impeller has a ring-like body portion from which a plurality of open-vane impeller vanes extend radially out and a plurality of fan blades extend radially in. The impeller is disposed in a closed cavity between two pump bodies with the vanes in an annular pumping chamber and the fan blades in a cylindrical vapor collection chamber radially inboard of the pumping chamber. The fan blades operate to blow vapor out of the vapor collection chamber through a vapor discharge slot in one of the pump bodies when rotation of the impeller commences thereby to enhance the initial vacuum at the inlet port to the pumping chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.