Title:
運動用ボール及びその製造方法
Document Type and Number:
Japanese Patent JP6874148
Kind Code:
B2
Abstract:
There is provided a method for manufacturing a sportsball which is a stick ball such as soft leather ball having a decrease in impact force as compared with conventional thread wound balls.The method for manufacturing a sportsball comprising of a spherical hollow rubber bladder filled with compressed air and a thread wound reinforced layer formed by evenly winding filament threads around the surface of the rubber bladder, characterized in that the nylon filament threads each formed by highly twisting two filament yarns each of 30-50 deniers with a single twist, are used as winding threads.
Inventors:
Takashi Fujikura
Yukio Sunamori
Akinori Hamamoto
Yukio Sunamori
Akinori Hamamoto
Application Number:
JP2019550992A
Publication Date:
May 19, 2021
Filing Date:
October 12, 2018
Export Citation:
Assignee:
Mikasa Co., Ltd.
International Classes:
A63B41/00; A63B45/00
Domestic Patent References:
| JP2000005345A | ||||
| JP62298379A | ||||
| JP58116371A | ||||
| JP49094428A |
Foreign References:
| US20140256477 |
Attorney, Agent or Firm:
Shinichiro Tanaka
▲吉▼田 和彦
Hiroyuki Suda
Disciple Maru Ken
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto
▲吉▼田 和彦
Hiroyuki Suda
Disciple Maru Ken
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto