公开(公告)号：US20200009448A1

公开(公告)日：2020-01-09

申请号：US16028613

申请日：2018-07-06

申请人： Byoung Koo CHO ,  Chang Suk HAN ,  Chang Hee CHUN ,  Bo Sub KIM ,  Yeon Uk JEONG

发明人： Byoung Koo CHO ,  Chang Suk HAN ,  Chang Hee CHUN ,  Bo Sub KIM ,  Yeon Uk JEONG

IPC分类号： A63C19/02

摘要： The present invention relates to an inclined structure of a court floor having a new structure for easily collecting automatically supplying balls used in practice. According to an inclined structure of a court floor according to the present disclosure, the ball used for practice can be rolled down outwardly along the slope of the court, and then be collected in the collecting ditch and gathered in one place, so there is no need to collect scattered balls separately.

公开(公告)号：US20170348582A1

公开(公告)日：2017-12-07

申请号：US15537944

申请日：2016-01-15

申请人： Byoung Koo CHO ,  Chang Suk HAN ,  Chang Hee CHUN

发明人： Byoung Koo CHO ,  Chang Suk HAN ,  Chang Hee CHUN

IPC分类号： A63B69/40 ,  A63B47/02 ,  A63B63/08 ,  A63B69/00 ,  A63B71/06 ,  A63B61/00

CPC分类号： A63B69/40 ,  A63B24/00 ,  A63B47/002 ,  A63B47/02 ,  A63B47/021 ,  A63B47/025 ,  A63B61/003 ,  A63B63/004 ,  A63B63/083 ,  A63B69/002 ,  A63B69/0071 ,  A63B69/0095 ,  A63B69/409 ,  A63B71/02 ,  A63B71/023 ,  A63B71/0669 ,  A63B2024/0025 ,  A63B2024/004 ,  A63B2071/025 ,  A63B2207/02 ,  A63B2220/10 ,  A63B2220/30 ,  A63B2220/805 ,  A63B2220/807 ,  A63B2220/833 ,  A63B2225/09

摘要： A ball supply apparatus includes: a housing coupled to the upper portion of the column structure, wherein a top portion of housing is partially opened, wherein the housing is divided by a partition into a ball storage portion and a ball discharge portion, wherein a bottom face of the ball storage portion is inclined downward toward the ball discharge portion, wherein a first opening is formed in a bottom of the ball discharge portion, and a second opening is formed in the partition at a lower portion thereof; a rotatable opening/closing plate rotatably coupled to the partition, wherein the rotatable opening/closing plate is configured to rotate to open/close the second opening; and a ball discharge tube rotatably coupled to the ball discharge portion at the first opening, wherein the ball discharge tube ball-communicates with the ball discharge portion via the first opening.