Line printer hammer banks
US8789922B2 · kind B2 · utility
0Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2013 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In one embodiment, a hammer bank for a line printer includes a back plate having a front surface, a back surface and a uniform thickness between the front and back surfaces. At least one hammer is disposed in front of the back plate. The at least one hammer is spring-biased for forward movement and away from the back plate and is releasably retained against such forward movement by a magnetic force acting rearwardly thereon. An elongated pole piece that is associated with the at least one hammer extends forwardly from the front surface of the back plate and is selectively operable to interrupt the magnetic force acting thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.