Buoys – rafts – and aquatic devices – Water skimming or walking device – Water ski
Patent
1985-09-18
1986-12-16
Barefoot, Galen
Buoys, rafts, and aquatic devices
Water skimming or walking device
Water ski
114290, 441 74, A63C 1500
Patent
active
046294350
ABSTRACT:
There is disclosed a water-ski construction in which there is provided an elongated element having an upper and lower surface. The lower surface is divided, in the longitudinal direction, into a fore zone, a mid-zone, and an aft-zone, the lower surface of the element being adapted for contact with water. The fore-zone is designed by a single concave surface the nature of an arrow-like depression. The mid-zone is defined by first and second concave longitudinal channels separated by a sharp edge. The longitudinal channels extend throughout the mid-zone of the ski and into the aft-zone. The mid-zone further includes a flat surface which defines and frames the outer periphery of both the fore and mid-zones of the elongated ski element, thusly defining the outer transverse extent of the longitudinal channels. The depth of the concave longitudinal channels progressively deepens at the mid-zone and lessens at both the aft and fore zones. The above set forth contour of the lower surface of the ski operates to afford enhanced control and maneuverability to the water ski.
REFERENCES:
patent: 2423796 (1947-07-01), Platt
patent: 3077617 (1963-02-01), Steffel
patent: 3568617 (1969-03-01), Yost
patent: 3827096 (1974-08-01), Brownson
patent: 3950807 (1976-04-01), Sharpe
patent: 3996869 (1976-12-01), Hadley
patent: 4193370 (1980-03-01), Schoell
patent: 4386982 (1983-06-01), Weinhaus
Barefoot Galen
Bartz C. T.
Silverman Melvin K.
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