Spa apparatus with heat transferring hanging interior structural liner
US5794280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H33/601
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heated therapeutic spa which comprises a spa tub containing water and having plumbing attached thereto, the tub having a wall which is a relatively good thermal conductor; a thermally efficient, insulating container comprising a load bearing outer wall, and a bottom wall; a plenum chamber formed between the tub wall and the container wall and extending about the tub wall; a motor and pump supplying circulating water to the tub and extending in the plenum chamber; a fan located to circulate air that converts heat from the motor into hot air exhausted into the plenum chamber; the fan operating to force the hot exhaust air to circulate around the tub wall, whereby the temperature of the air drops in flowing about the tub wall before returning to the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.