EP 0465605 A4 19920603 - RIDGED RACQUET STRING
Title (en)
RIDGED RACQUET STRING
Publication
Application
Priority
US 47070690 A 19900126
Abstract (en)
[origin: WO9111549A1] A string (10) for a sports racquet, such as a tennis racquet string, is comprised of a string core (20) having a plurality of external ridges (40) bonded thereon for aiding in imparting spin on a ball and for increasing the cross-over contact area between strings. The ridges are parallel to one another and extend axially with the string. Preferably, the string and ridges can be circumscribed by a maximum diameter circle (90), preferably of 1.70 millimeters. The process for making the ridged string includes passing a string core (20) through a bath (72) of resin (71), such as nylon, for coating and glueing the core and then through a die (74) shaped so as to form the ridges (40).
IPC 1-7
IPC 8 full level
A63B 51/02 (2015.01); D07B 1/16 (2006.01); D07B 5/00 (2006.01)
CPC (source: EP)
A63B 51/02 (2013.01); A63B 51/026 (2020.08); D07B 5/006 (2015.07); D07B 1/162 (2013.01); D07B 2201/2086 (2013.01)
Citation (search report)
See references of WO 9111549A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9111549 A1 19910808; AU 5568190 A 19910821; AU 634937 B2 19930304; CA 2049307 A1 19910727; EP 0465605 A1 19920115; EP 0465605 A4 19920603
DOCDB simple family (application)
US 9001698 W 19900330; AU 5568190 A 19900330; CA 2049307 A 19900330; EP 90907941 A 19900330