| YONEX KABUSHIKI KAISHA Patent applications |
| Patent application number | Title | Published |
|---|
| 20100331126 | RACKET - A tennis racket includes a frame that includes a shaft and a looped frame portion, the shaft having a grip formed on one end side thereof, the frame portion being joined to the other end side of the shaft and forming a hitting face with a string being strung across and a plurality of insertion holes that provide communication between an inner peripheral side surface and an outer peripheral side surface of the frame portion and through which the string is inserted. Shock absorbing portions and hard portions are provided in an alternating fashion on at least a part of the outer peripheral side surface of the frame portion. Each shock absorbing portion is formed between insertion holes that are adjacent to each other. Each hard portion is formed between insertion holes that are adjacent to each other and is less elastically deformable than the shock absorbing portion. | 12-30-2010 |
| 20100311526 | SHUTTLECOCK - A shuttlecock including a cap and a skirt part whereto an air passage hole is formed, wherein a rib is provided to the skirt part, adjacent to a rear end of the air passage hole in a generatrix direction of the skirt part, the rib having a shape wherein air pressure difference is generated between an air flow passing through the air passage hole to flow on an inside of the rib and an air flow not passing through the air passage hole but to flow on an outside of the rib, and an aerodynamic force directed from the inside of the rib to the outside is generated. | 12-09-2010 |
| 20100212805 | BADMINTON RACKET AND MANUFACTURING METHOD OF BADMINTON RACKET - A badminton racket that is strong in respect to impact and twist and that is high in surface stability and a manufacturing method of the badminton racket is provided. A badminton racket includes a frame formed circularly, a shaft joined to the frame, a joint installed reaching inside the frame and the shaft at a joint portion of the frame and the shaft, and an expandable resin placed between the joint and the frame. A badminton racket manufacturing method includes an expandable resin placing process that places an expandable resin that expands when heated on an outer periphery of a portion of a joint, the joint being to be installed to reach inside a frame formed with the resin sheet tube and inside a shaft, the portion being to be installed in the frame. | 08-26-2010 |
