PRODUCTION OF RACKET FRAME

PURPOSE:To permit easy conduction of an operation to bore a racket frame with gut holes without adversely affecting its strength characteristics. CONSTITUTION:The ball hitting part of the racket frame is formed by previously forming the gut holes in the spacing between a pair of ball hitting fame mo...

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Bibliographische Detailangaben
1. Verfasser:	HIGUCHI RYOJI
Format:	Patent
Sprache:	eng
Schlagworte:	AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES SPORTS TRAINING EQUIPMENT
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Beschreibung
Zusammenfassung:	PURPOSE:To permit easy conduction of an operation to bore a racket frame with gut holes without adversely affecting its strength characteristics. CONSTITUTION:The ball hitting part of the racket frame is formed by previously forming the gut holes in the spacing between a pair of ball hitting fame moldings 8 bisected apart a proper spacing in the ball hitting direction at the time of producing the racket frame having a outer shell layer made of FRP(fiber reinforced plastic). Gut extending bodies 6 curved to the shape of the ball hitting part are then interposed in these moldings in the spanned state and are arranged into molds 9. The ball is thereafter integrally molded by an RIM(reaction hitting part injection molding) method.