Compact spa jet with enhanced air effects
US8869320B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Oct 4, 2007 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Jul 23, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spa nozzle has a fluidic oscillator for oscillating a jet of water back and forth through an outlet aperture and a pair of diverging sidewalls extending downstream of the outlet aperture for issuing a sweeping jet of water into the spa. An air entrainment port is formed in each diverging sidewall downstream of the outlet aperture. The top and bottom walls in the oscillator interaction region diverge sufficiently so as to provide a relatively large outlet aperture area but not so large as to cause the jet to roll as it exits the outlet aperture, and wherein the ratio of the depth D of the power nozzle to the width W thereof is from about 2.9 to about 3.1 and the ratio of the depth D of the outlet throat to the width W thereof is from about 4.4 to about 4.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.