Temperature responsive electrical switch construction, parts therefor and methods of making the same
US4357589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A temperature responsive electrical switch construction having electrical contacts operated by a stem of a piston and cylinder type thermal device carried by the construction, the contacts comprising a plurality of pairs of cooperating contacts arranged to have each cooperating pair thereof operated serially by the stem as the thermal device senses different predetermined temperatures. Each pair of cooperating contacts comprises a fixed contact and a movable contact. The construction has a plurality of terminals projecting therefrom and being substantially parallel to each other and to the stem, the fixed contacts being respectively carried by the terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.