A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
273/163
A63B 49/02 (2006.01) A63B 59/00 (2006.01)
Patent
CA 1318696
TENNIS RACKET Abstract of the Disclosure The stiffness of a tennis racket is adjusted so that the first mode of bonding of the racket under free-free constraint conditions is between 170 HZ and 250 HZ and preferably between 200 HZ and 210 HZ. The second mode of bending under clamped-free constraint conditions is between 215 Hz and 315 Hz and preferably between 230 Hz and 265 Hz.
547074
Karasek Mark L.
Borden Ladner Gervais Llp
Wilson Sporting Goods Co.
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