EP 2762205 A1 20140806 - Racket frame
Title (en)
Racket frame
Title (de)
Schlägerrahmen
Title (fr)
Cadre de raquette
Publication
Application
Priority
JP 2013016360 A 20130131
Abstract (en)
A head 4 of a racket frame has a gut groove 20. The head 4 includes side reinforcing layers 18. Each side reinforcing layer 18 is formed from a prepreg including carbon fibers and a matrix resin. The compressive elastic modulus of the prepreg is equal to or less than 100 GPa. The tensile elastic modulus of the prepreg is equal to or less than 100 GPa. The tensile elastic modulus of the carbon fibers is equal to or less than 160 GPa. Preferably, the prepreg includes amorphous carbon fibers.
IPC 8 full level
A63B 49/00 (2006.01); A63B 49/10 (2006.01); A63B 49/14 (2006.01)
CPC (source: EP)
A63B 49/022 (2015.10); A63B 49/10 (2013.01); A63B 49/14 (2013.01); A63B 60/00 (2015.10); A63B 2209/02 (2013.01); A63B 2209/023 (2013.01)
Citation (applicant)
JP 2011015885 A 20110127 - SRI SPORTS LTD
Citation (search report)
- [XY] EP 0290424 A2 19881109 - FISCHER GMBH [AT]
- [XY] US 2005119075 A1 20050602 - ASHINO TAKESHI [JP]
- [XA] EP 2550997 A2 20130130 - DUNLOP SPORTS CO LTD [JP]
- [A] CN 102188801 A 20110921 - YONG LIU
- [A] WO 9112857 A2 19910905 - SCHERUEBL FRANZ [AT]
- [A] US 4436305 A 19840313 - FERNANDEZ DAVID [US]
- [A] L. G. RUDENKO, F. I. SHOKOL, M. P. NOSOV: "EVALUATING THE ELASTIC PROPERTIES OF TENNIS STRINGS", 1991, XP002722680, Retrieved from the Internet <URL:http://download.springer.com/static/pdf/691/art%253A10.1007%252FBF00632899.pdf?auth66=1396604036_2e94510793308888f1992292e9bbaf54&ext=.pdf> [retrieved on 20140402]
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2762205 A1 20140806; EP 2762205 B1 20160907; CN 103961849 A 20140806; CN 103961849 B 20160817; JP 2014147430 A 20140821; JP 6053539 B2 20161227
DOCDB simple family (application)
EP 14152466 A 20140124; CN 201410037696 A 20140126; JP 2013016360 A 20130131