EP 0652793 A1 19950517 - PRESSURISED TENNIS BALL.
Title (en)
PRESSURISED TENNIS BALL.
Title (de)
DRUCKGEFÜLLTER TENNISBALL.
Title (fr)
BALLE DE TENNIS REMPLIE D'AIR COMPRIME.
Publication
Application
Priority
- DE 4224705 A 19920725
- EP 9301598 W 19930623
Abstract (en)
[origin: DE4224705C1] The invention relates to a pressurised tennis ball with a wall consisting essentially of a natural rubber mix. In order to reduce the natural diffusion of the pressurised air inside the ball from the raw ball core, its wall has a thin diffusion blocking layer of a plastic or rubber, the permeability of which to N2 or O2 is lower than that of the natural rubber mixture of the wall.
IPC 1-7
IPC 8 full level
A63B 39/00 (2006.01); A63B 39/02 (2006.01)
CPC (source: EP KR)
A63B 39/00 (2013.01 - EP); A63B 39/02 (2013.01 - EP KR); A63B 2039/022 (2013.01 - EP)
Citation (search report)
See references of WO 9402215A1
Designated contracting state (EPC)
AT CH ES FR GB IT LI NL SE
DOCDB simple family (publication)
DE 4224705 C1 19931125; DE 9211769 U1 19930114; EP 0652793 A1 19950517; JP H07508907 A 19951005; KR 950702132 A 19950619; TW 245644 B 19950421; WO 9402215 A1 19940203
DOCDB simple family (application)
DE 4224705 A 19920725; DE 9211769 U 19920725; EP 9301598 W 19930623; EP 93914698 A 19930623; JP 50410194 A 19930623; KR 19940704686 A 19941222; TW 82104408 A 19930602