Flat boomerang has central body and outer periphery enclosing center point, with wings possessing bending lines, peripheral sections

摘要

The flat boomerang has a central body (1) with. an outer periphery enclosing a central point (11). The central body consists of a parallel top and bottom surface symmetrical with a horizontal plane, and with connecting peripheral sections (3) each of which extends as far as a curved limit Each wing (23,24) integral with the connecting sections has leading and trailing edges. A distal edge (21) faces the connecting sections, Each wing has a bending line (22) extending from an outer point (222) on the distal edge (21) to an inner point (221) on the bow-shaped limit.