Vane pump with symmetrical inclined fluid confinement initiating line
US4402655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1980 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Jul 25, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane type pump having a housing formed with an inlet chamber and an outlet chamber and having a cylinder portion, a cylindrical rotor mounted for eccentric rotation in the cylinder portion, and a plurality of vane mounted for concentric rotation in the cylinder portion. The rotor is formed with slots through which the vanes extend into a space defined between the inner peripheral wall of the cylinder portion and the outer peripheral wall of the rotor so as to divide the space to define a working chamber variable in volume for pumping effect. The inlet chamber is associated with the cylinder portion to define a fluid confinement initiating line at which the working chamber begins to be isolated from the inlet chamber when the forward end of one of the vanes passes the line. The fluid confinement initiating line is in a symmetrical inclined configuration such that the line is generally symmetrical with respect to the widthwise center line of the cylinder portion and is inclined with respect to the longitudinal axis of the cylinder portion over the substantially entire length of the line beginning at opposite ends of the cylinder portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.