Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having hydrofoil
Patent
1992-05-22
1993-06-01
Basinger, Sherman
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having hydrofoil
114285, 114362, B63B 120
Patent
active
052150291
ABSTRACT:
A permanently fixed metal trim tab for attachment in pair combinations to the aft end of a boat. Each trim tab comprising a downwardly extending aft edge. A top surface of each trim tab comprises an aft area which comprises striations which provide an anti-slip surface. The strength, position of attachment to the boat, and anti-slip surface permit use of the trim tab as a step for entry and exit to and from the boat. Each trim tab comprises a flange for attachment to a transom of the boat from connecting points above and below an aftwardly extending substantially flat plate of the trim tab which is an integral part of the flange. The trim tab comprises a uniform cross section which is compatible with fabrication by an extrusion process.
REFERENCES:
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patent: 3601078 (1971-08-01), Bedford
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patent: 5048449 (1991-09-01), Templeman
Article entitled "Stern Drive Performance", Trim Tabs and Hydrofoils, published in Hot Boat magazine, publication date unknown.
Article entitled "Seamanship, Boathandling with Trim Tabs and Hydrofoils", published in Boating World magazine, publication date unknown.
Basinger Sherman
Brahan Thomas J.
Foster Lynn G.
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