Heating system for spa
US10925805B2 · kind B2 · utility
0Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2018 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Sep 7, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5082
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for heating a pool or spa. The system may include a circuit for interrupting the power supply to a heating element of the pool or spa. A thyristor may be used to vary the voltage supply to the heating element, such as by use of a variable resistor, capacitor, and a triac. The system may adjust the resistance on the variable resistor to control to voltage supply to the heating element, allowing a larger heating element to be used more efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.