Submersible gearmotor
US5447078A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1993 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Sep 17, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A submersible gearmotor including a liquid resistant housing with radially inwardly extending partitions which form at least two shaft receiving chambers. The separate chambers act as protective regions between the internal components of the gearmotor and an outside liquid medium when submersed. The gearmotor also includes a tandem seal arrangement including an inboard seal located inside the housing and an outboard seal located outside the housing. The seals prevent the outside liquid medium from entering the gearmotor where the housing intersects with the rotating output shaft. The gearmotor further includes a leak detection system consisting of moisture sensing probes mounted inside one or both of the receiving chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.