TENNIS TRAINING APPARATUS HAVING INTEGRATED MULTI-SLOPES
作者： Lee Sung Hwi , Heo Pil Woo , Kim Ook Joong , Cha Moo Hyun
DOI:
关键词:
摘要: The present invention relates to a tennis practice device with integrated multiple tilt angles. angles comprises: plurality of meshes arranged at different slopes so as surround an accommodation space having opening part the front; and frames fixing edges mesh, respectively. mesh is disposed such that end portions adjacent pairs cross each other, side are provided intersection parts which where overlap on separated position from portion frame toward center side.
lens.org 参考文章(7)
Anthony Gorgo, Emma Gorgo, Backstop and sports ball return assembly ,(2000)
Scott T. Surbrook, Returning Goal System ,(2013)
Jason Saphire, Game apparatus and method of playing the same ,(2015)
Yu Zheng, Collapsible structures having overlapping support loops ,(1998)
Cho Sung Jin, TENNIS SWING MACHINE FOR EXERCISING ,(2014)
Lim Dong Seon, Lee Young Ju, Choi Young Jin, Practice swinging the ball supply of table tennis game ,(2017)
이석규, 테니스 연습용 네트 ,(1999)