Appliance with a controllable protection device
US7856854B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F37/42
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An appliance with a hazardous device contains a first controller controlled by a first control element which, in turn, is controlled by a second controller by use of a first switching element. An electrically controllable protection device is provided and is controlled by a second control element, it is possible to deactivate the protection device. A storage capacitor is provided between the first and the second control element and supplies the second control element with energy for a control pulse and is charged by the first control element when the first controller is switched off and is discharged by the first switching element when the first controller is switched on. This circuit generates a safe control circuit. In the event of a possible hazardous state, either the first controller is no longer supplied with energy or the protection device cannot be deactivated, and so danger to a user is precluded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.