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Last Updated: March 28, 2024

Claims for Patent: 7,942,764


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Summary for Patent: 7,942,764
Title:Baseball bat
Abstract: A baseball bat includes a hollow grip member having opposite front and rear ends, and an inner peripheral surface that defines a tapered chamber having a diameter reducing gradually toward the rear end. The inner peripheral surface has a first positioning portion disposed between the front end and the rear end. A striking member has an engaging segment received in the tapered chamber, and a large diameter segment extending forwardly from the engaging segment. The engaging segment has an axial hole, a plurality of open-ended slits extending along an axial direction and in spatial communication with the axial hole, and a second positioning portion aligned with the first positioning portion. A pressing member is inserted into the axial hole to press the second positioning portion against the first positioning portion.
Inventor(s): Chung; Min-Ju (Taichung Hsien, TW)
Assignee:
Application Number:12/578,802
Patent Claims:1. A baseball bat comprising: a hollow grip member having a front end, a rear end opposite to said front end along an axial direction, and an inner peripheral surface extending from said front end to said rear end, said inner peripheral surface defining a tapered chamber that has a diameter reducing gradually toward said rear end, said inner peripheral surface having a first positioning portion disposed between said front end and said rear end; a striking member having an engaging segment received in said tapered chamber, and a large diameter segment extending forwardly from said engaging segment and having a diameter larger than a maximum diameter of said engaging segment, said engaging segment having an axial hole extending along the axial direction, a plurality of open-ended slits extending along the axial direction and in spatial communication with said axial hole, and a second positioning portion aligned with said first positioning portion; and a pressing member inserted into said axial hole so as to press said second positioning portion against said first positioning portion, such that said first positioning portion is disposed in front of said second positioning portion.

2. The baseball bat as claimed in claim 1, wherein said hollow grip member is formed with an annular projection extending radially and inwardly from said inner peripheral surface and constituting said first positioning portion, said engaging segment further having a tapered portion, a head portion disposed at a rear end of said engaging segment, a front shoulder portion connected to and disposed behind said tapered portion, and a neck portion connected between said front shoulder portion and said head portion and having a maximum diameter smaller than a minimum diameter of said head portion to define a rear shoulder between said neck portion and said head portion, said rear shoulder constituting said second positioning portion.

3. The baseball bat as claimed in claim 2, wherein said large diameter segment of said striking member has an annular rear end surface formed with an annular groove, said front end of said hollow grip member being inserted into said annular groove in said rear end surface of said large diameter segment.

4. The baseball bat as claimed in claim 3, wherein said hollow grip member has an open rear end, said baseball bat further comprising a plug that is press-fitted within said open rear end and that seals said tapered chamber.

5. The baseball bat as claimed in claim 4, further comprising an anti-slip layer disposed on an outer peripheral surface of said hollow grip member.

6. The baseball bat as claimed in claim 2, wherein said pressing member has a diameter reducing gradually toward said front end of said hollow grip member.

7. The baseball bat as claimed in claim 1, wherein said hollow grip member is made of a material selected from the group consisting of aluminum alloy, plastic, and carbon fiber composite material.

8. The baseball bat as claimed in claim 1, wherein said striking member is made of wood.

9. The baseball bat as claimed in claim 1, wherein said pressing member is made of a material selected from the group consisting of aluminum alloy, plastic, and carbon fiber composite material.

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