Actuator for print hammer
US5046871A · kind A · utility
4Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J9/127
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An actuator for actuating a print hammner includes a yoke made of a magnetic material, an electromagnetic coil mounted on the yoke, and an armature rotatably supported by bearings mounted on opposite sides of the yoke. Upon excitation of the electromagnetic coil, the armature is attracted to the yoke to drive the print hammer through a push rod. The yoke includes a plurality of laminated sheets of a magnetic material formed by stamping using a press. An insulating material and an adhesive are coated on the sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.