Pool pump controller
US5725359A · kind A · utility
49Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pool pump controller includes a pneumatic pressure sensor having at least one port disposed to react to negative pressure within a pool's pump intake chamber. The sensor input port, which includes a check valve, is connected to a pump control switch through a pneumatic tube. The pump control switch combines aspects of a diaphragm switch and an opto-interrupter to provide high-reliability control of the pump motor in a watery environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.