Ships – Anchor – Fluke type
Patent
1987-02-20
1988-11-01
Basinger, Sherman D.
Ships
Anchor
Fluke type
114301, B63B 2132
Patent
active
047811420
ABSTRACT:
The present invention is a drag embedment marine anchor having a fluke and shank which are fixed relative to each other during operation. The fluke is symmetrical about its central longitudinal axis and has two pointed front tips for penetrating soil. The elongated shank extends upwardly along the longitudinal axis of the fluke and is rotatably pinned to a trunion at approximately the geometric center of the fluke, to reduce the bending moment in the shank. The attitude of the shank is fixed relative to the fluke at various attitudes by a stopper, to accommodate different soil conditions. The fluke is wedge-shaped in side elevation, and has stabilizer fins protruding upwardly from a stern transom, the stabilizer fins extending beyond the top surface of the fluke to correct yaw. The fluke is formed from a hollow shell having a smooth top surface and a plurality of stiffening ribs depending from its bottom. The ribs create a frictional drag force which facilitates the intitial penetration of the fluke tips into the sea floor. The fluke is preferably fabricated from welded metal plate, cast metal, reinforced concrete or reinforced concrete lined with metal plate.
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Anchor Manual by R. Van den Haak, Stevshark Anchor by Vryhof Ankers (2 pg. brochure).
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Basinger Sherman D.
Swinehart Edwin L.
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