Apparatus for detection of water level and temperature in a bathing appliance
US6847291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/265
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus operable in a wet environment for detecting the presence or absence of water in a non-conductive vessel, by measuring changes in dielectric constant and detecting the temperature of water in same vessel. A conductive element coupled to a sensing and switching means, transmits data to the controller, resulting from a change of dielectric constant at the conductive element. A temperature sensor detects and transmits temperature signals to the controller. A controller means receives data, from the dielectric constant sensor means and temperature data from the temperature sensor. Includes a coupling means which transmits data from the controller to an external device. The isolation means electrically isolates the conductive element and temperature sensor means from the water contained in a non-conductive vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.