Speed indicating means
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United States of America Patent
Stats
-
Mar 31, 1987
Grant Date -
N/A
app pub date -
Aug 13, 1985
filing date -
Aug 15, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A Faraday transducer for a marine speed indicator is sealed in a cylindrical housing so that it can be mounted in a boat hull with its base flush with the hull. A horseshoe magnet sealed within the housing has its poles located against the base surface and with 4 electrodes in the base surface located one on each side of each magnetic pole. The electrodes are connected together in such a way as to cancel out stray magnetic fields and to increase the Faraday emf produced by the relative movement of water flowing across the base of the transducer.
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