Head for wire dot printer
US4626116A · kind A · utility
1Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Mar 5, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A wire dot printer head comprising a leaf spring welded to an armature and biased by a permanent magnet, and a magnetic coil adapted to erase the magnetic field of the permanent magnet so as to release the leaf spring and to drive a print wire. The leaf spring is made of an alloy which consists essentially of 13-14 wt % Cr, 0.37-0.43 wt % C, 0.25-0.5 wt % Si, 0.3-0.5 wt % Mn, 1.15-1.35 wt % Mo and the balance Fe. The alloy makes the width of the weld metal of the leaf spring wide and its depth of weld penetration deep and thus minimizes the generation of micro-cracking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.