Magnetic tachometer assembly
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United States of America Patent
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Sep 9, 1986
Grant Date -
N/A
app pub date -
Sep 15, 1983
filing date -
Sep 17, 1982
priority date (Note) -
Expired
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Abstract
A tachometer assembly comprises two toothed rings (68, 70) in approximate axial register. The rings have similar peripheries of which the teeth (69, 71) are closely spaced in the axial direction of the rings. Magnetic flux in a path extending axially of the teeth varies as the rings rotate and is sensed by a coil (74) disposed coaxially of the rings.
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