Flow-control for a pump
US5408708A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Dec 23, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2033/0058
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flow-regulating valve is located in the outlet of the housing of a centrifugal pump instead of in downstream piping, to regulate the flow from the pump without the usual acoustic disturbance caused by flow. The arrangement is especially adapted for hydro-therapeutic installations, such as a spa, hot tub, whirlpool bath or the like. The valve is operated by a control conveniently accessible to the occupant of the hydro-therapeutic installation. The control can be in the form of a knob connected to the valve by flexible cable or the like or in the form of a single push-button which controls both the electric motor for the pump and an electric motor which operates the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.