Variable flow water pump
US6935839B2 · kind B2 · utility
10Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Sep 22, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0055
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As the pump speed increases in response to increasing engine speed, the pitch plate controls the rotation of the impeller vanes about a fixed rivet from a maximum pitch position, toward a minimum pitch position, thereby lowering pump output according to engine cooling requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.