Games using tangible projectile – Golf – Club or club support
Patent
1997-06-13
2000-08-22
Chapman, Jeanette
Games using tangible projectile
Golf
Club or club support
273 7, 273 23, A63B 5310
Patent
active
061064130
ABSTRACT:
A tubular body comprises: rolled layers of prepreg formed of reinforcing fibers impregnated with synthetic resin, wherein a ratio of impregnation of synthetic resin contained in a skew fiber body layer on which fibers are arranged in a skew direction and also a ratio of impregnation of synthetic resin contained in an axial fiber body layer on which fibers are arranged in an axial direction are in a range from a value approximately not lower than 10 wt % to a value lower than 25 wt %, and a thin layer, the ratio of impregnation of synthetic resin of which is high, is provided between the skew fiber body layer and the axial fiber body layer. The specific strength and specific rigidity of the tubular body are high, and the tubular body is less susceptible to separation and damage of the fibers and layers even if an impact force is given to it.
REFERENCES:
patent: 3646610 (1972-02-01), Jackson
patent: 4567216 (1986-01-01), Qureshi
patent: 4891408 (1990-01-01), Neuman-Evans
patent: 5156396 (1992-10-01), Akatsuka
patent: 5326099 (1994-07-01), Yamamoto
patent: 5427373 (1995-06-01), Kusumoto
Blau Stephen L.
Chapman Jeanette
Daiwa Seiko Inc.
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