Mizuno Corporation

Kazunori Misono

Toshiaki Kida

Kazuya Ishida

Masaaki Okuyama

Ichio Miyake

Yutaka Yamaguchi

A baseball or softball bat having improved restitution characteristic and preventing degraded hitting feeling caused by vibration or impact at the time of hitting can be provided. The baseball or softball bat including a ball hitting portion, a tapered portion and a grip portion is provided with an outer circumferential member, an inner circumferential member and a non-adhesive portion. The outer circumferential member is a cylindrical member forming at least the ball hitting portion. The inner circumferential member is arranged on the inner circumferential side of the outer circumferential member. The inner circumferential member has a tip end of the inner circumferential member positioned opposite to a taper side end as an end portion on the side of the tapered portion, fixed to the outer circumferential member. The non-adhesive portion is arranged, for preventing adhesion between the outer circumferential member and an unfixed portion of the inner circumferential member other than the tip end portion of the inner circumferential member and including the taper side end, at least on a portion of a region where the unfixed portion of the inner circumferential member and the outer circumferential member are opposite to each other.

Baseball or softball bat

A baseball or softball bat capable of increasing the hit distance of a ball and reducing the manufacturing cost can be obtained. A baseball or softball bat ( ) including a hitting portion ( ), a taper portion ( ), and a grip portion ( ) has a tubular member ( ) which includes an outer circumference plane ( ) extending from the hitting portion ( ) to the grip portion ( ) and an inner circumference plane ( ) located inside the outer circumference plane ( ) and extending from the hitting portion ( ) to the grip portion ( ), and a metal tubular member ( ) which is placed between the outer circumference plane ( ) and the inner circumference plane ( ) at least in the hitting portion ( ), the metal tubular member ( ) having a weak boundary layer ( ) formed on its surface.

A baseball glove according to this invention comprises an anti-glare web attached between sheaths thereof for the thumb and the index finger. A player can watch a fly by peering through the web without being hindered by the glare of sunlight or stadium lights of illumination.

Growing community of inventors

Osaka, Japan

Kazunori Misono