Hand launchable hydrodynamic recreational device

Details Hand launchable hydrodynamic recreational device Hand launchable hydrodynamic recreational device

1994-02-23

1996-05-07

Hafer, Robert A.

Amusement devices: toys

Aquatic

273428, 114 201, A63H 2300

Patent

active

055140238

ABSTRACT:
A recreational device in the form of an elongate projectile is described. The projectile has a body including a nose region, a mid-region and a tail region. Preferably, the projectile is provided with a fillable cavity for adjusting its buoyancy. The body has a size, mass, length-to-diameter ratio, specific gravity and contour that facilitate its stable distant travel through a liquid medium such as water. Importantly, the projectile has a specific gravity of between 0.95 and 1.05, which renders it neutrally buoyant in most fresh water bodies. In a preferred embodiment of the invention, the recreational device for stabilization purposes against undesirable yaw, pitch and roll has arcuately spaced, radially extending fins in a tail region of the body. When launched by hand underwater, the device maintains an imparted trajectory and slips cleanly through the water over a great distance.

REFERENCES:
patent: 1994490 (1935-03-01), Skinner
patent: 2480927 (1949-09-01), Hopkins
patent: 2925276 (1960-02-01), Leclerc
patent: 3141434 (1964-07-01), Van Billiard
patent: 3183002 (1965-05-01), Updaw
patent: 3216727 (1965-11-01), Hunter
patent: 3225488 (1965-12-01), Goldfarb
patent: 3434425 (1969-03-01), Critcher
patent: 3516358 (1970-06-01), Manninen et al.
patent: 3544113 (1970-12-01), Hand
patent: 3575123 (1971-04-01), Shepherd
patent: 3727570 (1973-04-01), Molinski
patent: 3754349 (1973-08-01), Wallace
patent: 3915092 (1975-10-01), Manson et al.
patent: 4109579 (1978-08-01), Carter
patent: 4395965 (1983-08-01), Lang
patent: 4448106 (1984-05-01), Knapp
patent: 4463954 (1984-08-01), Panse et al.
patent: 4569300 (1986-02-01), Ferris et al.
patent: 4748912 (1988-06-01), Garcia
patent: 4979922 (1990-12-01), Clark
patent: 5080017 (1992-01-01), Asikainen
patent: 5129325 (1992-07-01), Matzagg
patent: 5306191 (1994-04-01), Phillips et al.

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