Rotodynamic pump with spherical bearing
US4730989A · kind A · utility
11Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Aug 12, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Aug 12, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/167
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to canned pumps which form a unit with a spherical electric motor (hereinafter referred to as "spherical pumps"). A rotating unit, made up of the rotor and the impeller is supported by a spherical bearing. This spherical bearing has a self-cleaning property, preventing accumulation of dirt particles within the lubricating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.