Temperature sensor including thermosensitive element
US9714869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2011 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Dec 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor 1 includes: a thermosensitive element 2 composed of a low-thermal expansion ceramics having a coefficient of linear expansion of 3×10−6/° C. to 5×10−6/° C. and of which electrical characteristics change depending on temperature; a pair of electrode films 20 provided on the surfaces of the thermosensitive element 2; and a pair of lead wires having a coefficient of linear expansion of 15×10−6/° C. or less and bonded to the electrode films 20. When the coefficients of linear expansion of the thermosensitive element 2, the electrode film 20, and the lead wire 21 are respectively Ta(/° C.), Tb(/° C.), and Td(/° C.), the temperature sensor 1 satisfies a relationship Ta≦Tb≦Td.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.