CN-121985983-A - Recreational water projectile and use thereof

Abstract

A safer hand-thrown swimming pool projectile toy is provided. A projectile includes an elongated body having a hemispherical nose and a parabolic tail extending from the hemispherical nose to a flattened end, and a plurality of tail fins extending away from the elongated body and positioned near the flattened end. The other projectile has the overall body shape and tail fin of a V2 rocket, but has openings in the length direction and slits down each side to provide safety due to elasticity when striking a person's teeth or face.

Inventors

• Reinhold W. Weiss

Assignees

• 莱因霍尔德·W·维斯

Dates

Publication Date

20260505

Application Date

20240801

Priority Date

20230802

Claims (20)

1. 1. A projectile thrown underwater by hand, comprising: An elongated body having a hemispherical nose and a parabolic tail extending from the hemispherical nose to a flattened end, and A plurality of tail fins extending away from the elongated body and positioned near the flattened end.
2. 2. The projectile of claim 1, wherein each of the plurality of tail fins extends less than or equal to 20% of a length of the elongated body and is located at least 0.5cm from the flattened end.
3. 3. The projectile of claim 2, wherein an outer surface of the parabolic tail tapers from the hemispherical nose.
4. 4. A projectile according to claim 3, wherein the outer surface of the parabolic tail tapers generally according to the following equation: Y = 5.7X 2 + 0X - 3.2 Where Y is the length from the vertex of a parabola defining the parabolic tail and X is the distance from the midline of the parabola.
5. 5. A projectile according to claim 3, wherein the elongate body has a hardness of 69 shore or less.
6. 6. The projectile of claim 5, wherein the hemispherical nose includes a channel extending therethrough, the channel oriented perpendicular to a longitudinal axis of the elongated body, the channel forming a buffer between a top end of the hemispherical nose and the channel.
7. 7. The projectile of claim 6, wherein the channel is located 4 millimeters rearward of the top end of the hemispherical nose, the channel being about 4 millimeters high and 15 millimeters long.
8. 8. A projectile in accordance with claim 3, wherein said elongate body is hollow and comprises a first portion and a second portion releasably secured to said first portion, said first portion forming at least 15% of said elongate body, said first and second portions together forming an interior space within said elongate body when releasably secured together.
9. 9. The projectile of claim 8, wherein the first portion comprises a threaded portion and the second portion comprises a corresponding threaded portion, wherein when the threaded portions of the first and second portions are operably coupled together, the second portion is releasably secured to the first portion to form the elongated body having the interior space therein.
10. 10. The projectile of claim 8, wherein the first portion forms about half of the elongated body and includes the hemispherical nose, and the second portion includes the tail fin and the flattened end.
11. 11. The projectile of claim 8, wherein the first and second portions are loosely coupled together such that the first and second portions break upon impact.
12. 12. The projectile of claim 3, wherein the elongated body further comprises: An interior space, and A bore at or near the flattened end in fluid communication with the interior space.
13. 13. The projectile of claim 12, wherein the aperture is located at the flattened end.
14. 14. The projectile of claim 12, wherein the aperture has a diameter of 8 to 16mm.
15. 15. A method of filling the projectile of claim 12 with water, the method comprising: holding the projectile under water, the flat water-facing top surface of the projectile, and The projectile is shaken vertically under water.
16. 16. A projectile for throwing under water by hand, the projectile comprising a longitudinal axis, a nose, a tail, a body, and a plurality of fins, Wherein, the The nose has a peripheral portion and a central portion; the peripheral portion having a bridge portion and a pair of legs extending from the bridge portion to the body to form an arch; The legs having inner surfaces facing each other and opposing outer convex surfaces; the central portion being spanned by the peripheral portion in spaced relation and having opposed major surfaces, edge walls extending between the opposed major surfaces, and a pair of side surfaces coupled by a transition portion, the major surfaces of the central portion facing the leg portion; The body extends from the nose portion to the tail portion and has an annular surface; The surface of the body, the side surfaces of the central portion and the convex surfaces of the legs coincide with an imaginary fusiform profile extending from the bridge to the tail and tapering more steeply near the tail, and The fins are radially spaced around and bridge the body and the tail.
17. 17. The projectile according to claim 16, wherein: the bridge having a hemispherical surface remote from the body; The opposed major surfaces are convex, each generally having the shape of a semi-dome tombstone; The leg has a concave inner surface; The convex surface of the central portion facing the concave surface of the leg; The transition portion of the edge wall being annular, and The tail is generally frustoconical and terminates in a planar surface.
18. 18. The projectile of claim 17, wherein each fin terminates before the tail portion with a leading edge extending outwardly from the axis and oriented at an acute angle to the axis toward the nose portion and a trailing edge disposed at an angle to the axis.
19. 19. The projectile of claim 17, wherein the plurality of fins includes a pair of fins spaced apart in the direction of the leg and a pair of fins spaced apart across the width of the central portion.
20. 20. The projectile of claim 19, having a length of about 25 cm, a mass of about 290 grams, and a material hardness of less than about 69 shore.

Description

Recreational water projectile and use thereof Technical Field The present invention relates to a manual throwing toy torpedo suitable for amusement in a body of water such as a swimming pool. Background Solid rubber or plastic torpedo shaped projectiles for manual throwing under water in a swimming pool have been available since the 90 s of the 20 th century. One early such toy, known as Poolaris (TM), was briefly sold in Walmar shops. Later, a similar product known as Toypedo (TM) was sold by Swimwax (TM) of Norfork, west Virginia under the designation U.S. Pat. No. 3, 5514023 (Warner 1996). These products are commonly sold with pool products and water toys. Swimways company has later replaced this design with a new hourglass projectile design, 25 anniversary Toypedo (table 1), which was shut down for one year. Improved toy underwater projectiles have been described, including tri-fin projectiles (SILVERGLATE 2006) for use in conjunction with a hand-held device for launching the projectile (US 7052357). Other improved projectiles for underwater use have been described which comprise various adjustable tail or tail fins (Warner 1996) (Warner US 6,699,091 B1). There are also hollow projectiles such as Sharkpedo (R) that are filled with water from the fore and aft openings of the projectile. Alternatively, hollow torpedo shaped objects such as Toybedo Hydro of Swimways (currently a subsidiary of SPINMASTER) are filled with water from a hose by inflation pins, just like football and basketball are filled with air. These toy torpedoes are summarized in the accompanying table 1. Hydrodynamic testing has shown that for submarines, the "ideal profile" has a continuously varying diameter along its length. The bow is ellipsoidal in shape and the stern is parabolic in shape "(Joubert 2004). A classical example of this design is the us navy Albacore submarine in the 50 s of the 20 th century. Naval stops using such hydrodynamically optimized water droplet hull shapes because such shapes complicate the structure and the irregular shape of the interior volume is less practical (Joubert 2004). The implementation of this shape in relation to toy torpedoes is the first generation of Toyepedo (R) by company Swimways in the united states, which is almost the same shape as the classical V2 rocket for the second world war. The original Toypedo (R) was shut down around 2015, but the underwater torpedo alliance (Underwater Torpedo League) recently introduced the manufacture of a similar toy torpedo of this precise size and shape, currently marketed through amazon websites. Also on the Amazon website are Torpedo STRIKE and Josket torpedoes, which are the same materials, shapes and weights as the first generation Toypedo and underwater torpedo alliance products. These and previous toy torpedoes are made of hard materials, while newer models are harder than earlier products. The characteristics of the prior art passive sports toy and experimental torpedo are summarized in table 1. Early models had shore a hardness values between 70 and 80, whereas the hardness readings of the latest toy torpedoes sold by the underwater torpedo alliance on amazon and the products known as torpedo strikes (Torpedo Strike) were 87 shore hardness, which is the shore hardness reading of ice hockey. Existing toy projectiles are typically advertised as being capable of moving 9 meters (30 feet) under water. However, it was found experimentally that the projectile moved rapidly only within the first 5 meters (16 feet) from where it was thrown. Beyond this distance, even the best projectiles currently weighing less than 400 grams by hand drift downward in a slow and weak manner, unsuitable for sport or catching. There is indeed a push projectile that is farther in range. For example Toypedo Hydro is a large projectile of 1.6 kg, the mass of which contributes to its own momentum force pushing the projectile farther. However, the greater mass not only makes the projectile more difficult to target quickly in athletic sports environments, but the greater force also increases the risk of injury. Disclosure of Invention One aspect of the invention is a recreational water projectile or torpedo that is safer to throw underwater by hand. The present disclosure describes a projectile for a water sports type game, which may be played in a pool, for example. In one application of such a game, one person throws one or more projectiles intended to hit or touch another person attempting to avoid being hit or touched by each projectile. The players may alternate between throwers and evades and score by counting the number of projectile hits or touches each player. In some examples, the present disclosure describes a projectile for throwing under water by hand or with one hand, the projectile comprising an elongated body having a hemispherical nose and a parabolic tail extending from the hemispherical nose to a flattened end, and a plurality of tail fins extending away from