US 4,954,106 AGranted

Aquatic sports device

OwnerLin Shuh-Chininventor

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Abstract

An aquatic sports device which includes a buoyant body and a water injection device. The water injection device includes a tank, a piston, and a spring. In operation, the user's weight drives the piston downwardly. This causes water to spray out from the buoyant body through a nozzle. The reaction of the sprayed water makes the device move forward through a body of water. The spring returns the piston upwardly when the user takes his or her weight off of the piston.

Claims1

Dependent claims

An aquatic sports device, comprising:

(A) a buoyant body for buoyantly supporting a user above the surface of a body of water, said buoyant body having a forward end and a rear end, said buoyant body being formed of lightweight material, said buoyant body having a streamlined outer configuration;
and
(B) moving means for moving said buoyant body and the user through the body of water, said moving means including:
(a) a cylindrical tank located within said buoyant body, said tank being located more toward said rear end of said body than said forward end;
(b) a first pipe connected to the bottom of said tank for conveying water from said tank and through said rear end of said buoyant body, said pipe including a nozzle located at said rear end;
(c) a circular piston which slides downwardly from an upper position within said tank under the weight of the user to force water from said tank, through said first pipe, and through said rear end of said buoyant body to move said buoyant body and the user through the body of water, said piston including an annular slot;
(d) a spring located within said tank for returning said piston upwardly to said upper position;
(e) a second pipe connected to the bottom of said tank for conveying water from said forward end of said buoyant body and into said tank as said piston is returned to said upper position by said spring;
(f) a first one-way valve for preventing water from passing from said rear end of said buoyant body and through said first pipe as said piston moves upwardly, said one-way valve being located at an end of said first pipe;
(g) a second one-way valve for preventing water from passing out of said tank and through said second pipe as said piston moves downwardly, said second one-way valve being located at an end of said second pipe;
and
(h) a seal ring for preventing water from leaking from said tank and past said piston, said seal ring being received within said annular slot of said piston.

9 more elements

Dependencies are inferred from the claim text.

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Abstract

An aquatic sports device, comprising:

(A) a buoyant body for buoyantly supporting a user above the surface of a body of water, said buoyant body having a forward end and a rear end, said buoyant body being formed of lightweight material, said buoyant body having a streamlined outer configuration;
and
(B) moving means for moving said buoyant body and the user through the body of water, said moving means including:
(a) a cylindrical tank located within said buoyant body, said tank being located more toward said rear end of said body than said forward end;
(b) a first pipe connected to the bottom of said tank for conveying water from said tank and through said rear end of said buoyant body, said pipe including a nozzle located at said rear end;
(c) a circular piston which slides downwardly from an upper position within said tank under the weight of the user to force water from said tank, through said first pipe, and through said rear end of said buoyant body to move said buoyant body and the user through the body of water, said piston including an annular slot;
(d) a spring located within said tank for returning said piston upwardly to said upper position;
(e) a second pipe connected to the bottom of said tank for conveying water from said forward end of said buoyant body and into said tank as said piston is returned to said upper position by said spring;
(f) a first one-way valve for preventing water from passing from said rear end of said buoyant body and through said first pipe as said piston moves upwardly, said one-way valve being located at an end of said first pipe;
(g) a second one-way valve for preventing water from passing out of said tank and through said second pipe as said piston moves downwardly, said second one-way valve being located at an end of said second pipe;
and
(h) a seal ring for preventing water from leaking from said tank and past said piston, said seal ring being received within said annular slot of said piston.

9 more elements