Pool/spa heater
US6981650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Dec 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1902
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pool/spa heater having a temperature control portion which is connectable to an external temperature regulating controller, in which the temperature control portion has at least one primary temperature limiting control switch with a first temperature setpoint, at least one secondary temperature limiting control switch with a second temperature setpoint, a third switch adapted for connection with the external temperature regulating controller, and wherein the second temperature setpoint is higher than a maximum temperature setting on the external temperature regulating controller but lower than the first temperature setpoint. The temperature control portion can further have an on/off switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.