Gas/electric oven thermostat with self cleaning temperature calibration mechanism
US5617070A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | May 5, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermostat for an electric/gas oven includes a first electrical contact, a second electrical contact, a switch spring arm for moving the electrical contacts into and out of engagement and a pair of actuators for coupling forces to the switch spring arm. An enclosure encloses the switch spring arm and the first and second electrical contacts. The enclosure has axially aligned channels extending through opposed walls for slidably receiving the actuators. A temperature responsive subassembly includes a mechanism for movement responsive to changes in oven temperature and a spindle subassembly including mechanism for movement responsive to manual rotation of a spindle. A frame supports the enclosure and supports both the temperature responsive subassembly and the spindle subassembly in operative position with respect to the actuators. A self cleaning temperature calibration mechanism selectively determines a self cleaning oven temperature setting. The self cleaning temperature calibration mechanism comprises cooperating members coupled to the spindle and the enclosure to limit rotation of the spindle and accurately determine the self cleaning oven temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.