Title:
BADMINTON RACKET
Document Type and Number:
Japanese Patent JP2016112260
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a badminton racket improving a carry of a shuttle when beginner, middle-level and middle-aged and elderly competitors use.SOLUTION: A frame 10 includes in the longitudinal direction a first position p1 where a length in the transverse direction of an inner peripheral surface of the frame becomes longest; a second position p2 separated to a shaft side in the longitudinal direction by 50 mm from the first position p1; and a third position p3 separated to an opposite side to the shaft side in the longitudinal direction by 105 mm from the first position p1. A ratio of a length B in the transverse direction of the inner peripheral surface of the frame in the first position p1 to a vertical width A as a length in the longitudinal direction of the inner peripheral surface of the frame 10 at a central position in the transverse direction of the frame 10 is larger than 44/56; a ratio of a length C in the transverse direction of the inner peripheral surface of the frame in the second position p2 to the vertical width A is larger than 42/58; and a ratio of a length D in the transverse direction of the inner peripheral surface of the frame in the third position p3 to the vertical width A is 32/68 or less.SELECTED DRAWING: Figure 2
More Like This:
| JPH11114952 | FRTP MOLDING MATERIAL |
| JPH09299517 | RACKET FRAME |
| WO/1989/010774 | TENNIS RACKET |
Inventors:
YAMANAKA YOSUKE
OTANI KAZUYA
FUJII KIYOSHI
OTANI KAZUYA
FUJII KIYOSHI
Application Number:
JP2014254343A
Publication Date:
June 23, 2016
Filing Date:
December 16, 2014
Export Citation:
Assignee:
YONEX CO LTD
International Classes:
A63B49/02
Domestic Patent References:
| JPH08299503A | 1996-11-19 | |||
| JP2009017913A | 2009-01-29 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation