Thermal fuse
US4276532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jun 27, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/765
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure relates to a heat fuse for use in electrical and electronic equipment in which a contact plate having a diameter smaller than the internal diameter of a metallic casing is adapted to positively contact under pressure the inner peripheral surface of the metallic casing by the component force produced at the forward end of a second compression spring and applied in a direction perpendicular to the direction of the compression force. The contact plate can be pressed against the peripheral inner surface of the metallic casing with a sufficiently large contact pressure by the component force of the second compression spring, while the friction caused by the sliding movement of the contact plate with respect to the casing during functioning is extremely small owing to the diameter of the contact plate made smaller than the internal diameter of the metallic casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.