Patent ID: 11878222
Assignee: MIZUNO CORPORATION
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. A bat comprising:
a handle having a proximate end, a distal end, and a thread groove;
a barrel having a hollow portion that accommodates the distal end; and
a first damping section at least partially sandwiched between the handle and the barrel in an interior of the hollow portion, the first damping section comprising a first portion in contact with each of the handle and the barrel in the interior of the hollow portion, the first portion comprising a thread ridge disposed at least partially within the thread groove of the handle,
wherein a material of the first damping section has a D hardness of 60 or more, a loss coefficient tan δ of 0.11 or more as determined under conditions of a temperature of 20° C., a frequency of 150 Hz, and the amount of strain 3000 μST and a loss coefficient tan δ of 0.09 or more as determined under conditions of a temperature of 20° C., a frequency of 500 Hz, and the amount of stain 3000 μST.