Electric water-boiling container having switch-on dry and stream sensitive thermally responsive control units
US4357520A · kind A · utility
Inventor
Key dates
| Filing date | Mar 18, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Mar 18, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J27/62
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An electrically heated container for boiling liquids is provided with a thermally sensitive electrical control including a switch-on-dry protector switch unit directly connected with the cold leads of an electric heating element located externally of the container and in contact with the bottom wall thereof. The protector switch unit includes a thermally sensitive switch means enclosed in a protective housing having projecting terminal pins engageable by a female socket connector. The protector switch unit is mounted on a thermally conductive mounting plate located externally of the container and in contact with the heating element. The plate is enclosed by a detachable base member on the container. A steam-sensitive switch unit is mounted on the protector switch unit and includes a thermally sensitive element arranged to be impinged by steam produced by liquid boiling in the container and mechanically coupled to the switch means of the protector switch unit for deenergizing the heating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.