Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1994-10-04
1997-02-25
O'Shea, Sandra L.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
73187, G01P 344, G01P 366
Patent
active
056062532
ABSTRACT:
A marine speedometer for mounting to the exterior transom of a marine vessel includes a housing mounted to the transom flush with the bottom surface of the hull. A paddlewheel affixed to the housing has an outer periphery which extends no further than the bottom surface of the hull of the marine vessel. A portion of the housing adjacent to the bottom surface of the hull is shaped to direct a flow of water passing by the transom upwards into the paddlewheel to rotate the paddlewheel.
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Boucher Stephen G.
Jeffers Robert K.
Lagace Maurice P.
Airmar Technology Corporation
O'Shea Sandra L.
Phillips Roger C.
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