US20100062676A1 - Boomerang flying disc - Google Patents

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.