Magnetic damping assembly with temperature compensator for watthour meters
US4182984A · kind A · utility
3Cited by
21References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1978 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | May 5, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R11/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watthour meter damping assembly includes a U-shaped magnetic yoke and a pair of highly coercive and anisotropic permanent magnets projecting in facing relationship from the ends of the yoke. Opposing pole faces of the magnets form an air gap receiving a meter disc to be magnetically retarded. A single temperature compensator extends over the pole faces of the permanent magnets to form a compensating shunt flux path around the air gap. The compensator and magnetic yoke extend substantially parallel to each other from the inner and outer pole faces, respectively, of the magnet pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.