Modifiable boomerang

Information

  • Patent Grant
  • 10413793
  • Patent Number
    10,413,793
  • Date Filed
    Thursday, December 20, 2018
    5 years ago
  • Date Issued
    Tuesday, September 17, 2019
    4 years ago
Abstract
A modifiable boomerang comprises of a pair of wing blades which have a curved top surface and a flat bottom surface. The wings are connected together by a pivot bolt to form a boomerang whose angle can be adjusted to change the aerodynamics of the flying boomerang. A thrower can change the angle of a boomerang to change its flying pattern.
Description
THE BACKGROUND OF THE INVENTION

An ordinary boomerang has a fixed angle of its wings and its flying course and pattern are heavily influenced by this angle. If we change this angle then its flying course and pattern will change. The present invented modifiable boomerang has a hinge joint installed at its center to allow adjustment of its angle.


THE BRIEF DESCRIPTION OF THE INVENTION

Every boomerang has its wings set at a certain angle. Therefore, it has a certain flying pattern. When the angle of a boomerang changes its flying pattern will change also. The present invented modifiable boomerang is equipped with a hinge joint at the center to allow the thrower to change the angle of the boomerang and thus change the flying pattern of the boomerang.





DETAILED DESCRIPTION OF DRAWINGS


FIG. 1 is perspective view of a modifiable boomerang.



FIG. 2 is perspective view of components of modifiable boomerang.





SPECIFICATION

Referring now to the drawings in detail, numeral 3 of FIG. 1 is a modifiable boomerang.


Numeral 4 of FIGS. 1 and 2 is a top wing blade.


Numeral 5 of FIGS. 1 and 2 is a bottom wing blade.


The top wing blade 4 and bottom wing blade 5 have a top curved surface and a flat bottom surface.


Numeral 6 of FIGS. 1 and 2 are bolt holes.


Numeral 7 of FIGS. 1 and 2 is an adjustment bolt.


Numeral 8 of FIG. 2 is an adjustment nut corresponding to bolt 7.


Numeral 9 of FIG. 2 is a pivot bolt.


Numeral 10 of FIG. 2 is a pivot hole for the pivot bolt 9.


Numeral 11 of FIG. 2 is a pivot nut corresponding to pivot bolt 9. The pivot bolt 9 can pass snugly through pivot hole 10. The pivot nut 11 can screw snugly onto pivot bolt 9.


Numeral 12 of FIG. 1 is an angle made by the top wing blade 4 and bottom wing blade 5 of the modifiable boomerang 3.


The way to assemble the modifiable boomerang 3 is first to align the pivot hole 10 of the top wing blade 4 with the pivot hole 10 of the bottom wing blade 5 and then insert the pivot bolt 9 into the pivot hole 10 and screw on the pivot nut 11 tightly to make a modifiable boomerang 3. The angle 12 of the modifiable boomerang 3 can be set by first loosening the pivot nut 11, then aligning any bolt hole 6 of the top wing blade 4 with any bolt hole 6 of the bottom wing blade 5, then inserting bolt 7 through the bolt hole 6, then screwing on nut 8 tightly, and finally tightening the pivot nut 11. When the angle 12 is changed, the air dynamics of a thrown modifiable boomerang will be changed. Therefore a thrower can change the angle 12 of the modifiable boomerang 3 to change its flying pattern.

Claims
  • 1. A modifiable boomerang comprising: two wing blades, each wing blade having a plurality of bolt holes arranged in a circular ring, each wing blade having a pivot hole located in a center of the circular ring of bolt holes,one pivot bolt with pivot nut, andone adjustment bolt with adjustment nutwherein said pivot bolt is fastened through the pivot hole and secured by the pivot nut and said adjustment bolt is fastened through one of the plurality of bolt holes on each wing blade and secured by the adjustment nut to fasten said wing blades into different angles to change said modifiable boomerang's flight pattern.
  • 2. The modifiable boomerang of claim 1 wherein both wing blades have a curved top surface and a flat bottom surface.
US Referenced Citations (20)
Number Name Date Kind
692608 Bristow Feb 1902 A
1040702 Lee Oct 1912 A
1413316 Bradley Apr 1922 A
2361988 Bonnifield Nov 1944 A
2838310 Redka Jun 1958 A
3507497 Gardner Apr 1970 A
3565434 Liston Feb 1971 A
3814431 Callahan Jun 1974 A
3860203 Hyde Jan 1975 A
4216962 Flemming Aug 1980 A
4817961 Stone Apr 1989 A
5413354 Miller May 1995 A
5868596 Perthou Feb 1999 A
5906529 Spais May 1999 A
6443861 Foulke Sep 2002 B1
10020772 Puri Jul 2018 B1
20100248909 Thorpe Sep 2010 A1
20140038798 Littell Feb 2014 A1
20170266481 Dalebout Sep 2017 A1
20170319905 O'Connor Nov 2017 A1
Foreign Referenced Citations (4)
Number Date Country
388871 Sep 1989 AT
712326 Jun 1965 CA
0917891 May 1999 EP
188188 Nov 1922 GB