Buoys – rafts – and aquatic devices – Water skimming or walking device
Patent
1998-05-28
1999-08-31
Swinehart, Ed
Buoys, rafts, and aquatic devices
Water skimming or walking device
441 74, B63B 100
Patent
active
059445700
ABSTRACT:
The surf riding craft is a shaped water surfboard which has a prestressed center stringer with a foam core element located on each side of the stringer to form a center core element. The bending of the stringer at the tail end in manufacture creates a spring condition tending to force the surfboard back to the original straight position. There is a patch layer bonded to the top and bottom of the center core element for added strength yet relatively more flexibility of the midsection element section compared to the nose and tail sections of the craft. The craft is then covered by the bonding of a top skin and a bottom skin. Three fins are mounted near the tail of the craft. This construction provides for bending and torsional motion about the midsection element of the craft to provide better performance in surfing waves.
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patent: 4887986 (1989-12-01), Langenbach et al.
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patent: 5145430 (1992-09-01), Keys et al.
patent: 5275860 (1994-01-01), D'Luzansky et al.
Beech Dennis W.
Swinehart Ed
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