Hydroplaning disc

Details Hydroplaning disc Hydroplaning disc

1976-11-08

1979-05-01

Shay, F. Barry

Amusement devices: games

Surface projectile game; game element

Simulated game

A63B 6510, A63B 6706

Patent

active

041519973

ABSTRACT:
An aerodynamic and hydromechanical hydroplaning disc with a solid unitary body comprised of aggregated material. The disc is heavier than the water it displaces and non-floating. A series of longitudinally oriented (i.e., meridionally oriented, or north-south) discontinuities are provided only on the extreme latitudinal periphery of the rim adjacent to the top and bottom surfaces of the disc. Said discontinuities: exert a greater interfering effect on the airflow and waterflow around the circumference than over the top and under the bottom surfaces; create a turbulent, separated and unseparated, peripheral boundary layer in air and water; reduce air resistance and water resistance; increase range, frequency of skips, and dynamic stability. Also, there is provided a granular texture on the bottom and circumferential surfaces of the disc which results in a more sure grip and improved hydroplaning stability (i.e., the ability of the disc to maintain a horizontal orientation while hydroplaning).

REFERENCES:
patent: 1815520 (1931-07-01), McLeod
patent: 2640699 (1953-06-01), Garbo
patent: 3359678 (1967-12-01), Headrick
patent: 3399255 (1968-08-01), Moehlman et al.
patent: 3544113 (1970-12-01), Hand
patent: 3613295 (1971-10-01), Everett
patent: 3840232 (1974-10-01), Ludwig et al.
patent: 3954263 (1976-05-01), Whelan et al.

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