EP 0275805 B1 19910828 - TENNIS RACKET
Title (en)
TENNIS RACKET
Publication
Application
Priority
FR 8618458 A 19861222
Abstract (en)
[origin: US4875679A] A tennis racket provided with a vibration damping device. The racket includes at least one pair of viscoelastic dampers, symmetric relative to a longitudinal axis of the racket and working in opposition. Each damper of the pair consists of a plate of viscoelastic material, whose one face is glued against the racket at a selected spot of the racket, and which includes on its other face a stress plate of rigid material. The selected spot corresponds to the antinode of a specific mode of vibration of the racket.
IPC 1-7
IPC 8 full level
A63B 49/00 (2006.01); A63B 49/02 (2006.01); A63B 59/00 (2006.01)
CPC (source: EP US)
A63B 60/54 (2015.10 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES IT LI
DOCDB simple family (publication)
FR 2608444 A1 19880624; FR 2608444 B1 19890331; AT E66627 T1 19910915; DE 275805 T1 19890105; DE 3772549 D1 19911002; EP 0275805 A1 19880727; EP 0275805 B1 19910828; ES 2003855 A4 19881201; JP S63164968 A 19880708; US 4875679 A 19891024
DOCDB simple family (application)
FR 8618458 A 19861222; AT 87420349 T 19871221; DE 3772549 T 19871221; DE 87420349 T 19871221; EP 87420349 A 19871221; ES 87420349 T 19871221; JP 32161487 A 19871221; US 13414887 A 19871217