Differential thermal tripping device with bimetallic strips
US5825273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2011/0087
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Differential thermal tripping device with bimetallic strips for electrical protection appliance such as a circuit breaker. The circuit breaker includes a tripping assembly with two contact strips 30, 40 free to move along the X direction, and for each bimetallic strip, a single adjustment part 15 fixed to a free inclined edge 19 of the bimetallic strip head 13, adjustable along the X direction, in the position obtained after heating of the bimetallic strips for calibration. The assembly 30, 40 may consist of a frame supporting adjustment parts until they are fixed and provided with separable areas 36, 46 to generate two contact strips following cutting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.