EP 0177155 A3 19870805 - PLAYING SURFACE FOR SPORTS
Title (en)
PLAYING SURFACE FOR SPORTS
Publication
Application
Priority
GB 8421660 A 19840825
Abstract (en)
[origin: EP0177155A2] A playing surface with selected bounce characteristics is constructed by confining particulate material preferably sand or fine soil in a shallow trench. For indoor use a flexible sheet is rested on the top layer of the particulate material thereby spreading the load produced by the ball during bouncing and the feet of the players thereby preventing excessive bumps being formed in the surface. The particulate material must be kept dry to achieve the constant characteristic and thereby for outdoor use the flexible sheet and shallow trench must be waterproof.
IPC 1-7
IPC 8 full level
A63C 19/00 (2006.01)
CPC (source: EP)
A63C 19/00 (2013.01)
Citation (search report)
- [Y] US 1699660 A 19290122 - FORREST CHARLES N
- [Y] US 2515847 A 19500718 - WINKLER CARL W
- [Y] AT 56808 B 19121227 - JUNAK OTTO, et al
- [Y] FR 2315570 A1 19770121 - BECKER JACQUES [FR]
- [A] US 3682476 A 19720808 - KEMPSON GEORGE C, et al
- [A] DE 1658476 B2 19730301
- [A] GB 1539475 A 19790131 - KUREHA CHEMICAL IND CO LTD
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0177155 A2 19860409; EP 0177155 A3 19870805; GB 8421660 D0 19840926
DOCDB simple family (application)
EP 85305962 A 19850822; GB 8421660 A 19840825