Spa with double sealed pump
US6454523B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jan 17, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/126
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A water pool apparatus, such as a portable spa, pool, hot tub or recirculating bath tub having a double seal configuration. The water pool apparatus has a water recirculation system which includes a centrifugal pump. The centrifugal pump has a double seal which includes a seal housing and a pair of spaced-apart seals. The seal housing defines an enclosed reservoir chamber. By the invention, any liquids which are successful in leaking past the first seal are trapped within the reservoir chamber. As the reservoir chamber accumulates liquid, the liquid can be recycled back into the water recirculation system by a drain conduit running between the reservoir chamber and the suction side of the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.