Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps
US10612542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Oct 31, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/80
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Techniques involve a motor assembly including a rotor and a stator. The stator includes a contact surface for contacting an outer surface of the rotor. The contact surface includes a rigid material. The motor assembly also includes at least one constraint disposed along a length of the motor assembly, where the constraint constrains a radial and/or tangential movement of the rotor relative to the stator. The at least one constraint may be disposed at one or more proximate ends of the motor assembly, and/or along the length of the motor assembly. The contact surface of the stator may have a profile including peaks and valleys, and in some embodiments, the contact surface may be treated to reduce friction and/or wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.