Meter movement having reinforced armature assembly
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United States of America Patent
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May 25, 1982
Grant Date -
N/A
app pub date -
Jan 28, 1980
filing date -
Jan 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reinforced bobbin which when wound with a sensing winding forms the armature of a D'Arsonval movement measuring instrument. The reinforced bobbin consists of a thin elongated open rectangular bobbin with detent holes centered along the axis of revolution of the bobbin in the measuring instrument. A nonmagnetic low density ball with a diameter slightly larger than the opening in the bobbin is locked in position inside the bobbin by the detent holes to prevent inward deformation of the bobbin when the measuring instrument is subject to rough handling.
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