专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2009049329A1 BOOMERANG 审中-公开
公开(公告)号：WO2009049329A1
公开(公告)日：2009-04-16
申请号：PCT/VN2008/000004
申请日：2008-10-09
申请人： TOSY ROBOTICS JOINT STOCK COMPANY , HO, Vinh Hoang
发明人： HO, Vinh Hoang
IPC分类号： A63H27/127
CPC分类号： A63H33/18 , A63H27/12
摘要： 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 from a group of polyvinyl chloride, polypropylene, polyethylene terephthalate, polystyrene and high impact polystyrene, the material has a specific weight of from about 0,9g/cm 3 to about l,60g/cm 3 and as thicknesses of from about 0,1mm to about 1mm; the ratio between rear groove deep and blade width is of from about 1/7 to about 6/7; the ratio between front groove deep and blade width is of from about 0 to about 3/7; the elevation angle α0 is of from about 10° to about 45°; the initial curve radius r o of the blades is longer or equal to 1/5 of the radius R of said ring (13); the ratio between the total area of said blades and the area of a circle defined by said ring (13) is of from about 12,5% to about 38%.
摘要翻译：本发明涉及一种能够自动改变叶片的仰角α和叶片（12）的旋转速度变化时叶片的曲线半径r的飞旋镖，其中叶片（12）由优选选自组的弹性塑料薄膜的聚氯乙烯，聚丙烯，聚对苯二甲酸乙二醇酯，聚苯乙烯和高抗冲聚苯乙烯，该材料的重量约为0.9g / cm3至约1.6g / cm3，厚度为约0.1mm至约1mm; 后槽深度和刀片宽度之间的比率为约1/7至约6/7; 前槽深度和刀片宽度之间的比率为约0至约3/7; 仰角a0为约10°至约45°; 叶片的初始曲线半径ro长于或等于所述环（13）的半径R的1/5; 所述叶片的总面积与由所述环（13）限定的圆的面积之间的比率为约12.5％至约38％。

IPRDB

热门服务

关于我们

友情链接

联系方式