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Class 473/590 - Boomerang


Subclass of Class 473 - Games using tangible projectile
Definition: Subject matter wherein the projectile has an aerodynamic
No. of applications: 2
Last issue date: 09/23/2010


Application No.Application TitleIssue Date
20100240478BOOMERANG
The invention relates to a boomerang that can automatically change both elevation angle α of blades and curve radius r of blades upon the change of rotary speed of blades (12), wherein blades (12) are made of elastically plastic film preferably selected f... 		09/23/2010
20060046878BOOMERANG
A boomerang includes a central disk comprised of concentric inner and outer rings that are connected by radially extending connection sections. Wings radially extend from an outer circumference of the outer ring, corresponding in position to the connection sections. The... 		03/02/2006
 
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