Boomerang flying disc

Abstract

Boomerang Flying Disc is a flying disc that is designed to return to the player like a boomerang after it is thrown. A rudder on the Boomerang Flying Disc guides it to fly in a circular route.

Description

THE BACKGROUND OF THE INVENTION

[0001] When thrown, a flying disc flies forward and does not fly back like a boomerang. The present invented Boomerang Flying Disc will fly back like a boomerang.

THE BRIEF SUMMARY OF THE INVENTION

[0002] The momentum of a flying disc is straight forward. If a side momentum is added to a flying disc, then the direction of a flying disc will change to a diagonal direction to the right or left according to the direction of the added side momentum. This will make the flying disc fly a circular route and return toward the person who threw the flying disc. This side momentum can be created by a rudder that is attached onto flying disc with a certain device.

THE DETAILED DESCRIPTION OF DRAWINGS

[0003] FIG. 1 is a perspective view of Boomerang Flying Disc.

[0004] FIG. 2 is the bottom view of Boomerang Flying Disc.

[0005] FIG. 3 is the dissection view of Boomerang Flying Disc.

[0006] FIG. 4 is a perspective view of parts of Boomerang Flying Disc.

[0007] FIG. 5 is a perspective view of another version of Boomerang Flying Disc.

THE DETAILED DESCRIPTION OF THE INVENTION

[0008] Referring now to the drawings in detail numeral 10 of FIG. 1 is a Boomerang Flying Disc. Numeral 11 of FIG. 2 is the bottom view of Boomerang Flying Disc 10. Numeral 12 of FIG. 3 is the dissection view of Boomerang Flying Disc 10. Numeral 13 of FIGS. 1, 4 and 5 is a rudder. Numeral 14 of FIG. 4 is a thumb screw. Numeral 15 of FIGS. 1, 3, 4 and 5 is body of rudder 13. Numeral 16 of FIGS. 1, 3, 4 and 5 is angled side-wing of rudder 13. Numeral 17 of FIGS. 1, 3, 4 and 5 is threaded head-nut of rudder 13. Numeral 18 of FIGS. 1, 2, 3, 4 and 5 is threaded pin of thumb screw 14. Numeral 19 of FIGS. 2, 3 and 4 is cap of thumb screw 14. Numeral 20 of 2, 3, 4 and 5 is spring coil. Numeral 21 of FIGS. 1, 2, 3, 4 and 5 is dome-shaped plate of Boomerang Flying Disc 10. Numeral 22 of FIGS. 2, 3, 4 and 5 is central hole of dome-shaped plate 21 of Boomerang Flying Disc 10. The way to assemble a Boomerang Flying Disc 10 is as follows: First step is to insert threaded pin 18 of thumb screw 14 into spring coil 20. The second step is to insert threaded pin 18 from the bottom 11 of Boomerang Flying Disc 10 into the central hole 22 of dome-shaped plate 21. The third step is to screw threaded pin 18 of thumb screw 14 into threaded head-nut 17 of rudder 13 to fasten rudder 13 onto doom-shaped plate 21. FIG. 5 demonstrates another way to assemble Boomerang Flying Disc 10. Insert threaded pin 18 of thumb screw 14 from the bottom 11 of doomed-shaped plate 21 into the central hole 22 of doomed-shaped plate 21. Threaded pin 18 then passes through spring coil 20 and screwed into threaded head-nut 17 of rudder 13 to fasten rudder 13 into doomed-shaped plate 21. The tension of spring coil 20 should be adjusted so that when Boomerang Flying Disc 10 is thrown and the doom-shaped plate 21 is spinning, the tension of spring coil 20 keeps rudder 13 at the tail side of flying doom-shaped plate 21. The tension of spring coil 19 can be adjusted by screwing thumb screw 14 clockwise or counter clockwise. The mechanism of action of Boomerang Flying Disc 10 is that when there is a certain degree of friction between doom-shaped plate 21 and rudder 13, the force of the front oncoming wind will counterbalance the spinning force of doom-shaped plate 21 and blow the angled side-wing 16 of rudder 13 to the tail side of flying doom-shaped plate 21 to guide doom-shaped plate 21 to fly in a circular route. If there is no friction between rudder 13 and doom-shaped plate 21, then rudder 13 will not guide the flying route of doom-shaped plate 21. On the other hand if the tension of spring coil 19 is too high rudder 13 will spin simultaneously with flying doom-shaped plate 21 at the same speed and rudder 13 will not guide the flying route of doom-shaped plate 21. Therefore the tension of spring coil 19 should be adjusted to the amount that allows the front oncoming wind to blow angled side-wing 16 to the tail side of doom-shaped plate 21 while doom-shaped plate 21 is flying and spinning in order for angled side-wing 16 to guide flying doom-shaped plate 21 to fly a circular route. The tension of spring coil 20 should be high for a strong player because the stronger player throws and spins Boomerang Flying Disc 10 with more force. The tension of spring coil 14 should be low for a weak player because the weak player throws and spins Boomerang Flying Disc 10 with less force. The tension of spring coil 20 should be high for a strong front oncoming wind and low for a weak front oncoming wind. Rudder 13 can be turned upside down to change the direction of angled side-wing 16 in order to change the direction of the circular flight route. A player of Boomerang Flying Disc 10 has to practice to master the skill to play Boomerang Flying Disc 10 just like a boomerang player has to practice to throw a boomerang to become an expert boomer player. An alternative to spring coil 20 is a U-shaped spring plate which is fenestrated to allow passage of threaded pin 18. The fenestration can be a hole on each side of the spring plate or in the center of the spring plate.

Claims

1. A boomerang flying disc comprising a plate, a rudder, and an attachment of said rudder to said plate.

2. The boomerang flying disc of claim 1 wherein said plate is dome-shaped.

3. The boomerang flying disc of claim 1 wherein said attachment of said rudder to said plate comprises a threaded pin and thumb screw.

4. The boomerang flying disc of claim 1 wherein said rudder has an angled side-wing.

5. The boomerang flying disc of claim 1 wherein said attachment of said rudder to said plate includes a spring to provide friction between said rudder and said plate.

6. The boomerang flying disc of claim 5 wherein said spring and said rudder is attached to said plate with said threaded pin and thumb screw.

7. The boomerang flying disc of claim 5 wherein said spring is a spring coil.

8. The boomerang flying disc of claim 5 wherein said spring is a fenestrated U-shaped spring plate.

9. The boomerang flying disc of claim 1 wherein said plate has a central hole.