RACKET FRAME
PROBLEM TO BE SOLVED: To secure satisfactory strength and rigidity in practical use while reducing the weight of a racket frame and improve degree of freedom for design by arranging a reinforcement layer using carbon fiber whose tensile elastic modulus is within a specified range at least in a part...
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| creator | HIGUCHI RYOJI WATANABE MITSUYA |
| description | PROBLEM TO BE SOLVED: To secure satisfactory strength and rigidity in practical use while reducing the weight of a racket frame and improve degree of freedom for design by arranging a reinforcement layer using carbon fiber whose tensile elastic modulus is within a specified range at least in a part of an outer layer constituting a racket frame made of fiber reinforcement resin. SOLUTION: This racket frame is formed by a substantially elliptic batting part where a gut is stretched, a grip part, and a shaft part connecting the batting part and the grip part, and formed by disposing an outer layer 6 made of fiber reinforced resin in the periphery of a core material 5. In this case, the outer layer 6 is made of fiber reinforced resin which is reinforced by carbon fiber or glass fiber, and a reinforcement layer 7 made of fiber reinforced resin reinforced by carbon fiber having tensile elastic modulus of 650-1000 GPa is disposed in a part of the layer. That is, the reinforcement layer 7 is interposed in the outer layer 6 corresponding to both side surfaces 8a, 8b on the batting surface of the racket frame 1. Thus, the strength and rigidity of the racket frame 1 are improved. |
| format | Patent |
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SOLUTION: This racket frame is formed by a substantially elliptic batting part where a gut is stretched, a grip part, and a shaft part connecting the batting part and the grip part, and formed by disposing an outer layer 6 made of fiber reinforced resin in the periphery of a core material 5. In this case, the outer layer 6 is made of fiber reinforced resin which is reinforced by carbon fiber or glass fiber, and a reinforcement layer 7 made of fiber reinforced resin reinforced by carbon fiber having tensile elastic modulus of 650-1000 GPa is disposed in a part of the layer. That is, the reinforcement layer 7 is interposed in the outer layer 6 corresponding to both side surfaces 8a, 8b on the batting surface of the racket frame 1. Thus, the strength and rigidity of the racket frame 1 are improved.</description><edition>7</edition><language>eng</language><subject>AMUSEMENTS ; APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING ; BALL GAMES ; GAMES ; HUMAN NECESSITIES ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; PERFORMING OPERATIONS ; SPORTS ; TRAINING EQUIPMENT ; TRANSPORTING</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000829&DB=EPODOC&CC=JP&NR=2000233032A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000829&DB=EPODOC&CC=JP&NR=2000233032A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HIGUCHI RYOJI</creatorcontrib><creatorcontrib>WATANABE MITSUYA</creatorcontrib><title>RACKET FRAME</title><description>PROBLEM TO BE SOLVED: To secure satisfactory strength and rigidity in practical use while reducing the weight of a racket frame and improve degree of freedom for design by arranging a reinforcement layer using carbon fiber whose tensile elastic modulus is within a specified range at least in a part of an outer layer constituting a racket frame made of fiber reinforcement resin. SOLUTION: This racket frame is formed by a substantially elliptic batting part where a gut is stretched, a grip part, and a shaft part connecting the batting part and the grip part, and formed by disposing an outer layer 6 made of fiber reinforced resin in the periphery of a core material 5. In this case, the outer layer 6 is made of fiber reinforced resin which is reinforced by carbon fiber or glass fiber, and a reinforcement layer 7 made of fiber reinforced resin reinforced by carbon fiber having tensile elastic modulus of 650-1000 GPa is disposed in a part of the layer. That is, the reinforcement layer 7 is interposed in the outer layer 6 corresponding to both side surfaces 8a, 8b on the batting surface of the racket frame 1. Thus, the strength and rigidity of the racket frame 1 are improved.</description><subject>AMUSEMENTS</subject><subject>APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING</subject><subject>BALL GAMES</subject><subject>GAMES</subject><subject>HUMAN NECESSITIES</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</subject><subject>PERFORMING OPERATIONS</subject><subject>SPORTS</subject><subject>TRAINING EQUIPMENT</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOAJcnT2dg1RcAty9HXlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBgYGRsbGBsZGjsZEKQIAtV4cig</recordid><startdate>20000829</startdate><enddate>20000829</enddate><creator>HIGUCHI RYOJI</creator><creator>WATANABE MITSUYA</creator><scope>EVB</scope></search><sort><creationdate>20000829</creationdate><title>RACKET FRAME</title><author>HIGUCHI RYOJI ; WATANABE MITSUYA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000233032A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>AMUSEMENTS</topic><topic>APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING</topic><topic>BALL GAMES</topic><topic>GAMES</topic><topic>HUMAN NECESSITIES</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</topic><topic>PERFORMING OPERATIONS</topic><topic>SPORTS</topic><topic>TRAINING EQUIPMENT</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>HIGUCHI RYOJI</creatorcontrib><creatorcontrib>WATANABE MITSUYA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HIGUCHI RYOJI</au><au>WATANABE MITSUYA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>RACKET FRAME</title><date>2000-08-29</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To secure satisfactory strength and rigidity in practical use while reducing the weight of a racket frame and improve degree of freedom for design by arranging a reinforcement layer using carbon fiber whose tensile elastic modulus is within a specified range at least in a part of an outer layer constituting a racket frame made of fiber reinforcement resin. SOLUTION: This racket frame is formed by a substantially elliptic batting part where a gut is stretched, a grip part, and a shaft part connecting the batting part and the grip part, and formed by disposing an outer layer 6 made of fiber reinforced resin in the periphery of a core material 5. In this case, the outer layer 6 is made of fiber reinforced resin which is reinforced by carbon fiber or glass fiber, and a reinforcement layer 7 made of fiber reinforced resin reinforced by carbon fiber having tensile elastic modulus of 650-1000 GPa is disposed in a part of the layer. That is, the reinforcement layer 7 is interposed in the outer layer 6 corresponding to both side surfaces 8a, 8b on the batting surface of the racket frame 1. Thus, the strength and rigidity of the racket frame 1 are improved.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SPORTS TRAINING EQUIPMENT TRANSPORTING |
| title | RACKET FRAME |
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