Rotary pump apparatus
US6648620B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C15/0049
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary pump apparatus includes a stator housing, a pump function component, at least two discharge ports, a ring shaped pressure chamber, an outflow passage and an interception wall. The pump function component is contained in the stator housing. The discharge ports discharge the operation fluid from the pump function component, and are opened into the ring shaped pressure chamber. The pressure chamber is formed in the stator housing and defined with an outer wall and an inner wall. The outflow passage is opened in the pressure chamber. The interception wall is formed in the pressure chamber by connecting one portion of the outer wall and one portion of the inner wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.