Thermostat metal
US4217398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Oct 10, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12979
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermostat metal characterized by low cost has a substantially linear temperature response over a wide temperature range from 0.degree. to 800.degree. F. and is adapted for wide use for temperature control purposes in a whole variety of electrical cooking appliances, particularly when used in combination with integral but thermally-inactive support means for the thermostat metal. The thermostat metal comprises a layer of metal of relatively high coefficient of thermal expansion having a nominal composition by weight of 72 percent manganese, 18 percent copper and 10 percent nickel metallurgically bonded to a layer of metal of relatively lower coefficient of thermal expansion comprising 430 Stainless Steel, whereby the bimetal material displays a sufficiently high and linear flexivity over a wide temperature range to be useful in the various different types of thermostats used in cooking appliances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.