초록 ▼

A floating aquatic device, e.g. toy, boat, etc, which is propelled by the wind and surf comprises a buoyant body hull and a flat, generally triangular, horizontal keel plate secured to the bottom of the hull in a vertical spaced relation. The body hull has a concave rear portion which is of greater

A floating aquatic device, e.g. toy, boat, etc, which is propelled by the wind and surf comprises a buoyant body hull and a flat, generally triangular, horizontal keel plate secured to the bottom of the hull in a vertical spaced relation. The body hull has a concave rear portion which is of greater height and width relative to the remainder of the hull and configured in a manner to capture sufficient water and/or wind forces to propel the toy through the water in which it is floating by the forces co-acting with the concave rear portion of the hull. The generally triangular keel is of sufficient weight to maintain said hull in an upright floating position and to stabilize the device. The concave rear portion of the hull is configured to bifurcate the water and/or wind forces co-acting with the rear portion to orient the forward end of the toy in a direction opposed to the forces. The concave rear portion of the hull directs a portion of the water forces from the curl of the wave downwardly onto the wide rear portion of the keel plate to skim the device through the water.

대표청구항 ▼

A floatable aquatic device propelled by the wind and surf comprising; a buoyant body hull having a concave rear portion, said hull configured to resemble a water fowl and said concave rear portion forming the tail portion of the water fowl and the topmost portion thereof extending above the water fo

A floatable aquatic device propelled by the wind and surf comprising; a buoyant body hull having a concave rear portion, said hull configured to resemble a water fowl and said concave rear portion forming the tail portion of the water fowl and the topmost portion thereof extending above the water fowl back portion, said rear portion being of greater height and width than the forward end of the hull to capture sufficient water and/or wind forces to propel the floatable aquatic device through the water in which it is floating by the forces coacting with the concave rear portion and having a pair of concave indentations laterally spaced one to each side of the vertical center of said concave rear portion to define a vertical ridge with pockets on each side which bifurcates the water and/or wind forces co-acting with the rear portion to orient the forward end of the floatable aquatic device in a direction opposed to the forces, a keel defined by a flat horizontal triangular plate secured to the bottom of the hull in a vertically spaced relation by a vertical spacer member to allow water to flow therebetween, said flat horizontal plate having substantially less transverse surface area at its forward end than at its rearward end whereby the rearward end provides more drag and vertical resistance than the forward end to water in which the floatable aquatic device is floating and the rearward end of said horizontal plate receiving sufficient downwardly directed water forces from waves striking the concave rear portion of said body hull to propel said floatable aquatic device through the water, the weight of said keel substantially one-third the weight of said buoyant body hull to maintain said hull in an upright floating position in turbulent water.