Golf club shaft
The golf club shaft comprises a reinforced tip portion (2) from the tip end (4) to the position 300 mm toward the grip end (5), a gripping butt portion (3) from the grip end (5) to the position 100 mm toward the tip end (4), and an intermediate portion between the reinforced tip portion (2) and the...
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| creator | MATSUI, YASHUSHI HISAMATSU, GORO ASHIDA, HIROKI |
| description | The golf club shaft comprises a reinforced tip portion (2) from the tip end (4) to the position 300 mm toward the grip end (5), a gripping butt portion (3) from the grip end (5) to the position 100 mm toward the tip end (4), and an intermediate portion between the reinforced tip portion (2) and the gripping butt portion (3). The shaft satisfies an equation EI = alpha . X at its intermediate portion, where EI (Nm ) is the flexural rigidity, X (mm) is the distance from the tip end (4) of the shaft, and alpha is a given constant. The alpha values of the shafts in accordance with the embodiments 1 through 3 are 0.12, 0.09, and 0.06, respectively. Thus, the present invention has an improved deflection during downswing and is liked by a majority of players. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP1210964A3</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP1210964A3</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP1210964A33</originalsourceid><addsrcrecordid>eNrjZOB3z89JU0jOKU1SKM5ITCvhYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgGGRoYGlmYmjsbGRCgBACQyHhQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Golf club shaft</title><source>esp@cenet</source><creator>MATSUI, YASHUSHI ; HISAMATSU, GORO ; ASHIDA, HIROKI</creator><creatorcontrib>MATSUI, YASHUSHI ; HISAMATSU, GORO ; ASHIDA, HIROKI</creatorcontrib><description>The golf club shaft comprises a reinforced tip portion (2) from the tip end (4) to the position 300 mm toward the grip end (5), a gripping butt portion (3) from the grip end (5) to the position 100 mm toward the tip end (4), and an intermediate portion between the reinforced tip portion (2) and the gripping butt portion (3). The shaft satisfies an equation EI = alpha . X at its intermediate portion, where EI (Nm ) is the flexural rigidity, X (mm) is the distance from the tip end (4) of the shaft, and alpha is a given constant. The alpha values of the shafts in accordance with the embodiments 1 through 3 are 0.12, 0.09, and 0.06, respectively. Thus, the present invention has an improved deflection during downswing and is liked by a majority of players.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>AMUSEMENTS ; APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING ; BALL GAMES ; BRAID ; BRAIDING ; BRAIDING MACHINES ; BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET ORCARBONISED LACE ; GAMES ; HUMAN NECESSITIES ; KNITTING ; LACE ; LACE-MAKING ; NON-WOVEN FABRICS ; SPORTS ; TEXTILES ; TRAINING EQUIPMENT ; TRIMMINGS</subject><creationdate>2004</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=20040114&DB=EPODOC&CC=EP&NR=1210964A3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040114&DB=EPODOC&CC=EP&NR=1210964A3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MATSUI, YASHUSHI</creatorcontrib><creatorcontrib>HISAMATSU, GORO</creatorcontrib><creatorcontrib>ASHIDA, HIROKI</creatorcontrib><title>Golf club shaft</title><description>The golf club shaft comprises a reinforced tip portion (2) from the tip end (4) to the position 300 mm toward the grip end (5), a gripping butt portion (3) from the grip end (5) to the position 100 mm toward the tip end (4), and an intermediate portion between the reinforced tip portion (2) and the gripping butt portion (3). The shaft satisfies an equation EI = alpha . X at its intermediate portion, where EI (Nm ) is the flexural rigidity, X (mm) is the distance from the tip end (4) of the shaft, and alpha is a given constant. The alpha values of the shafts in accordance with the embodiments 1 through 3 are 0.12, 0.09, and 0.06, respectively. Thus, the present invention has an improved deflection during downswing and is liked by a majority of players.</description><subject>AMUSEMENTS</subject><subject>APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING</subject><subject>BALL GAMES</subject><subject>BRAID</subject><subject>BRAIDING</subject><subject>BRAIDING MACHINES</subject><subject>BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET ORCARBONISED LACE</subject><subject>GAMES</subject><subject>HUMAN NECESSITIES</subject><subject>KNITTING</subject><subject>LACE</subject><subject>LACE-MAKING</subject><subject>NON-WOVEN FABRICS</subject><subject>SPORTS</subject><subject>TEXTILES</subject><subject>TRAINING EQUIPMENT</subject><subject>TRIMMINGS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB3z89JU0jOKU1SKM5ITCvhYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgGGRoYGlmYmjsbGRCgBACQyHhQ</recordid><startdate>20040114</startdate><enddate>20040114</enddate><creator>MATSUI, YASHUSHI</creator><creator>HISAMATSU, GORO</creator><creator>ASHIDA, HIROKI</creator><scope>EVB</scope></search><sort><creationdate>20040114</creationdate><title>Golf club shaft</title><author>MATSUI, YASHUSHI ; HISAMATSU, GORO ; ASHIDA, HIROKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1210964A33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2004</creationdate><topic>AMUSEMENTS</topic><topic>APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING</topic><topic>BALL GAMES</topic><topic>BRAID</topic><topic>BRAIDING</topic><topic>BRAIDING MACHINES</topic><topic>BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET ORCARBONISED LACE</topic><topic>GAMES</topic><topic>HUMAN NECESSITIES</topic><topic>KNITTING</topic><topic>LACE</topic><topic>LACE-MAKING</topic><topic>NON-WOVEN FABRICS</topic><topic>SPORTS</topic><topic>TEXTILES</topic><topic>TRAINING EQUIPMENT</topic><topic>TRIMMINGS</topic><toplevel>online_resources</toplevel><creatorcontrib>MATSUI, YASHUSHI</creatorcontrib><creatorcontrib>HISAMATSU, GORO</creatorcontrib><creatorcontrib>ASHIDA, HIROKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MATSUI, YASHUSHI</au><au>HISAMATSU, GORO</au><au>ASHIDA, HIROKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Golf club shaft</title><date>2004-01-14</date><risdate>2004</risdate><abstract>The golf club shaft comprises a reinforced tip portion (2) from the tip end (4) to the position 300 mm toward the grip end (5), a gripping butt portion (3) from the grip end (5) to the position 100 mm toward the tip end (4), and an intermediate portion between the reinforced tip portion (2) and the gripping butt portion (3). The shaft satisfies an equation EI = alpha . X at its intermediate portion, where EI (Nm ) is the flexural rigidity, X (mm) is the distance from the tip end (4) of the shaft, and alpha is a given constant. The alpha values of the shafts in accordance with the embodiments 1 through 3 are 0.12, 0.09, and 0.06, respectively. Thus, the present invention has an improved deflection during downswing and is liked by a majority of players.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES BRAID BRAIDING BRAIDING MACHINES BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET ORCARBONISED LACE GAMES HUMAN NECESSITIES KNITTING LACE LACE-MAKING NON-WOVEN FABRICS SPORTS TEXTILES TRAINING EQUIPMENT TRIMMINGS |
| title | Golf club shaft |
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