Thermal cut-outs and to the method of assembling a multiplicity of such thermal cut-outs
US4297669A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1979 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Aug 27, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49105
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermal cut-out which is adapted to open an electrical circuit in response to an excessive rise in temperature associated with the circuit protected by said cut-out. Said cut-out comprising a hollow body of electrically insulating material and having an opening through which a pair of contact members are put into said hollow body. A plug of electrically insulating material closing said opening and stressing the contacts to a condition in which they are biased apart. Said contact members being retained in engagement by an element as long as its temperature has not reached a predetermined temperature. Said element being made from a material which deforms or collapse at said predetermined temperature so that it cannot retain said biased contacts any longer in engagement and permits the contacts to open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.