Armature group for mosaic printing head and related manufacturing method
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United States of America Patent
Stats
-
Mar 10, 1987
Issued Date -
N/A
app pub date -
Mar 18, 1986
filing date -
Nov 23, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An armature group for mosaic printing head has a plurality of armatures wherein each armature which is part of an actuation electromagnet associated with one of a plurality of printing needles, is fixed to an elastic arm of a spring steel spider having as many arms as there are armatures. The spider, besides performing an armature positioning function allows the armature group to be handled as a unitary element which is easy to assemble. The thrust arm of each armature further has a double bend so that the plane between such arm and the corresponding needle head is perpendicular to the axis of the needle and passes through the fulcrum of the armature. This minimizes the buckling force which the needle has to undergo during the actuation phase. The construction of the armature group can be accomplished by a completely automated manufacturing process.
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Family
International Classification(s)
Cited Art Landscape
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