EP 2377583 A1 20111019 - RACKET STRING, METHOD FOR MANUFACTURING SAME, AND RACKET STRUNG WITH SAME
Title (en)
RACKET STRING, METHOD FOR MANUFACTURING SAME, AND RACKET STRUNG WITH SAME
Title (de)
SCHLÄGERSAITE, HERSTELLUNGSVERFAHREN DAFÜR UND DAMIT BESPANNTER SCHLÄGER
Title (fr)
CORDE DE RAQUETTE, PROCÉDÉ POUR SA FABRICATION, ET RAQUETTE GARNIE DE CELLE-CI
Publication
Application
Priority
- JP 2010059790 W 20100609
- JP 2009155340 A 20090630
Abstract (en)
A racket string 10 of the present invention includes a synthetic fiber. The cross section is flattened by heating, compressing, and deforming the string after it has been formed, and an indentation is made in any part of the string. The flattened string is wound in a substantially non-twisted state. A method for producing the racket string includes heating the string at a temperature of Tg (°C) or more and Tm - 10 (°C) or less, where Tg (°C) represents a glass transition point and Tm (°C) represents a melting point of a main synthetic fiber constituting the string, compressing and deforming the string between rollers 7a and 7b that are arranged with a predetermined clearance therebetween; and then cooling and winding up the string. In a racket strung with the racket string of the present invention, a principal surface of a hitting surface of the racket is formed of the flat surfaces of the string, and the strings include uneven portions due to torsion that are present partially and non-uniformly on the hitting surface of the racket. Thus, the present invention provides a racket string that can make full use of the features of the flat surface, a method for producing the racket string, and a racket strung with the racket string.
IPC 8 full level
A63B 51/02 (2015.01); A63B 102/02 (2015.01)
CPC (source: EP KR US)
A63B 51/00 (2013.01 - KR); A63B 51/02 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2011001805A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
US 2011136601 A1 20110609; CN 102196840 A 20110921; EP 2377583 A1 20111019; JP 4713692 B2 20110629; JP WO2011001805 A1 20121213; KR 20120034068 A 20120409; TW 201103606 A 20110201; WO 2011001805 A1 20110106
DOCDB simple family (application)
US 201013059434 A 20100609; CN 201080003005 A 20100609; EP 10793975 A 20100609; JP 2010059790 W 20100609; JP 2010535153 A 20100609; KR 20117004947 A 20100609; TW 99120193 A 20100622