Spa nozzles with air entrainment
US6575386B1 · kind B1 · utility
18Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/14482
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An air entrainment spa nozzle having a jet of water which passes over an air entrainment port with the air entrainment port having a downstream structure which enhances the air entrainment. In one embodiment, the air enhancement structure is a ramp which extends in a downstream direction from the air entrainment port. In another embodiment, the air entrainment port projects or protrudes into the jet of water by a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.