Electromagnetic print hammer coil assembly
US4397234A · kind A · utility
9Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Dec 30, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heat exchange system for an electromagnetically operated print hammer of a print hammer bank provides internal and external heat transfer for the operating windings. A non-magnetic metal bobbin of the heat exchange system provides conductive transfer of heat from the interior of the operating winding to the magnetic core. Flat parallel plates of magnetic material are attached to the sides of the operating winding for external heat transfer and magnetic flux shielding. The plates may have multiple laminations having different saturation and permeability characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.