Title:
ELASTIC BODY AND BAT
Document Type and Number:
Japanese Patent JP2023127636
Kind Code:
A
Abstract:
To provide an elastic body capable of reducing energy loss in the elastic body and improving repulsive force.SOLUTION: An elastic body for attachment to a ball hitting part 13 of a bat 1 for a ball game, includes: an outer annular part 23 arranged on a radially outer side; an inner annular part 21 arranged on a radially inner side; a spring part 19 which supports the outer annular part 23 relative to the inner annular part 21 in a radial direction, and is deflectable in a circumferential direction and the radial direction; and a space part 25 which is defined between the outer annular part 23 and the inner annular part 21, and enables deformation of the outer annular part 23 to the radially inner side while allowing deflection of the spring part 19.SELECTED DRAWING: Figure 4
Inventors:
ITO HIDEMASA
KAWAI YOSUKE
KANAZAWA TAKAYOSHI
ISHIZU TOMOYASU
ARAI KENSUKE
MURAKAMI KENJI
YOSHIZUKA YASUTAKE
KAWAI YOSUKE
KANAZAWA TAKAYOSHI
ISHIZU TOMOYASU
ARAI KENSUKE
MURAKAMI KENJI
YOSHIZUKA YASUTAKE
Application Number:
JP2022031437A
Publication Date:
September 14, 2023
Filing Date:
March 02, 2022
Export Citation:
Assignee:
NHK SPRING CO LTD
International Classes:
A63B59/56
Attorney, Agent or Firm:
Yuuichi Sudo
Daisuke Sudo
Daisuke Sudo
Previous Patent: Key storage device and key management system
Next Patent: Ball hitting unit and bat using the same
Next Patent: Ball hitting unit and bat using the same