Patent ID: 6135046
Filing Date: 2000-10-24
Classification: B63B

Abstract:
Drift control apparatus comprising:a) a fabric member that deploys to a frustrum shape and has a bore that extends between leading and trailing edges, wherein a circumference of the leading edge is substantially greater than the circumference of the trailing edge, wherein a continuous floatation member is secured to said leading edge to extend at least 15% of the circumference of the leading edge, wherein said floatation member extends between first and second equal length straps that extend from said leading edge, wherein third and fourth equal length straps, which are longer than said first and second straps, extend from said leading edge diametrically opposite said first and second straps, and wherein a flexibly resilient, endless hoop is secured to extend around the circumference of the leading edge to bias the leading edge to self-expand to a fully open condition; andb) a plurality of vents secured to said fabric member between said floatation member and trailing edge and communicating with said bore, whereby said resilient hoop, floatation member, first, second, third and fourth straps and plurality of weights collectively cause said leading edge to rapidly expand and fill said bore with water as said vents expel air.