Double-seal/oil-reservoir system for a motor/pump assembly
US6533540B1 · kind B1 · utility
7Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 8, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/126
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A double-seal/oil-reservoir system for motor/pump assembly includes first seal (S1) and a second seal (S2) of a carbon/ceramic ring type that are axially spaced from one another along a drive shaft (24). A containment volume “V” is defined between the first and second seals (S1 and S2) in which an oil or oil-like fluid is contained to prevent seepage or weepage of the fluid circulated by the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.