Racket frame

Games using tangible projectile – Player held and powered – nonmechanical projector – per se,... – Racket or paddle; accessory therefor

Reexamination Certificate

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Details

C473S536000, C473S537000, C473S521000

Reexamination Certificate

active

07059981

ABSTRACT:
A racket frame (10) including a laminate having not less than two fiber reinforced resinous layers layered one upon another and one or more modified fiber reinforced resinous layers (20) each containing a modified resinous composition, as a matrix resin, having a loss factor (=tan δ) not less than 0.5 nor more than 3.0, when the loss factor is measured at a temperature of 0° C. to 10° C. and a frequency of 10 Hz. A weight of the modified fiber reinforced resinous layers (20) is set to not less than 1% nor more than 10% of a weight of the fiber reinforced resinous layers.

REFERENCES:
patent: 5487928 (1996-01-01), Fujimoto
patent: 5965249 (1999-10-01), Sutton et al.
patent: 6335100 (2002-01-01), Tominaga et al.
patent: 2003/0064838 (2003-04-01), Ashino et al.
patent: 2005/0003912 (2005-01-01), Ashino et al.
patent: 2005/0119075 (2005-06-01), Ashino
patent: 61-29613 (1986-07-01), None
patent: 5-33645 (1993-05-01), None
patent: 10-290851 (1998-11-01), None
patent: 2002-45444 (2002-02-01), None

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