Propeller combination for a boat propeller unit
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United States of America Patent
Stats
-
May 3, 1988
Grant Date -
N/A
app pub date -
Sep 12, 1986
filing date -
Sep 17, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a boat propeller unit with double, counter-rotating propellers. The forward propeller is designed to function without cavitation, while the after-propeller is optimally cavitating by being made cupped and with a blade width of between 60% and 75% of the blade width of the forward propeller.
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Family
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Cited Art Landscape
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