Progressive-cavity pump with composite stator and manufacturing process
US6336796B1 · kind B1 · utility
32Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2230/27
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A progressive-cavity pump intended to impart energy to a fluid, includes at least a casing (1), a stator (2) and a rotor (3) arranged in the stator. The casing has at least two parts, a first part (2a) made of a material of low elasticity and a second part (2b) arranged between the inner wall (1a) of the housing and the first part 2(a), the second part (2b) being suited to apply and/or to maintain a stress &sgr; exerted by the first part (2a) on the rotor (3) in order to obtain the pressure gain required for the pumped fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.