Combined temperature responsive valve construction and electrical switch construction and method of making the same
US4401964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Apr 15, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/0206
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A combined temperature responsive valve construction and an electrical switch construction wherein the valve construction has a thermally responsive device of the piston and cylinder type operating a movable valve member that is engaged by the piston of the device and operates an actuator of the switch construction, the valve member comprising an axially movable valve stem having opposed ends one of which is engaged by the piston of the device and the other of which operates the actuator. A coiled compression spring has one of the opposed ends thereof engaging a spring retaining part of the other end of the valve stem in a retained manner and the other opposed end thereof engaging the actuator whereby axial movement of the valve stem toward the actuator will tend to compress the spring therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.