Backflow safety valve for therapy pools
US3978886A · kind A · utility
5Cited by
8References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jun 25, 1975 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Jun 25, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86019
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve which is particularly adapted for use as a backflow safety valve for therapy pools, in which it prevents water from flowing through the air supply line and damaging the air blower. When the water outlets of the therapy pool are temporarily blocked, water which is forced into the air supply line by water pressure flows into the open end of a cup shaped valve member and moves it to closed position within the air supply line. The safety valve will automatically re-open when the blockage is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.