Title:
GROMMET AND RACKET
Document Type and Number:
WIPO Patent Application WO/2022/163454
Kind Code:
A1
Abstract:
The objective of the present invention is to make it possible to improve striking performance when using a racket to hit a ball. A grommet (25 to 28) is configured by providing a strip-shaped portion (31), and a cylinder portion (32) projecting from one surface of the strip-shaped portion. The cylinder portion is provided with a plurality of ribs (36) extending in an extension direction of a central axis (C) of a cylinder main body (35). The plurality of ribs consist of first ribs (36a) which project from an outer circumferential surface of the cylinder main body toward both sides in the extension direction of the strip-shaped portion, and second ribs (36b) which project from the outer circumferential surface of the cylinder main body toward both sides in a direction perpendicular to the extension direction of the strip-shaped portion. At least two first ribs are formed on each of the two sides in the extension direction of the strip-shaped portion, and at least one second rib is formed on each of the two sides in the direction perpendicular to the extension direction of the strip-shaped portion.
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Inventors:
KATO HITOSHI (JP)
NISHIYAMA HIROKI (JP)
NAGASAWA KOJI (JP)
INOUE NAO (JP)
NISHIYAMA HIROKI (JP)
NAGASAWA KOJI (JP)
INOUE NAO (JP)
Application Number:
PCT/JP2022/001737
Publication Date:
August 04, 2022
Filing Date:
January 19, 2022
Export Citation:
Assignee:
YONEX CO LTD (JP)
International Classes:
A63B49/022; A63B102/02; A63B102/04
Foreign References:
| JPS57149066U | 1982-09-18 | |||
| JPS57176270U | 1982-11-08 | |||
| JPS5466968U | 1979-05-12 | |||
| JP2013132455A | 2013-07-08 | |||
| JP2003117028A | 2003-04-22 | |||
| JP2014193205A | 2014-10-09 | |||
| US20110098142A1 | 2011-04-28 | |||
| CN2892190Y | 2007-04-25 | |||
| DE19502898A1 | 1996-08-01 | |||
| JP2012517873A | 2010-06-29 | |||
| JPS564042U | 1981-01-14 | |||
| JP2021012755A | 2021-02-04 |
Attorney, Agent or Firm:
AOKI Hiroyoshi et al. (JP)
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