Patent ID: 7166046

Claim:
A baseball bat comprising: a tubular member including an inner wall, and a slide rail extending axially on said inner wall; a tubular hitting portion made of a foam material and sleeved on said tubular member; a handle inserted telescopically in said tubular member; and a locking unit including a first locking member provided on said handle, and a second locking member disposed nonrotatably within said tubular member and slidable along said slide rail; wherein said second locking member includes a main body having a substantially C-shaped cross section and an internal wall defining a tapering hole, and an internal thread formed on said internal wall, said first locking member having an externally threaded tapering portion insertable into said tapering hole and engageable with said internal thread, said main body being expandable to a locking position in which said main body abuts against said tubular member and locks said handle against movement relative to said tubular member when said externally threaded tapering portion is rotated threadedly in said tapering hole in an inward direction, said main body permitting said handle to move relative to said tubular member when said externally threaded tapering portion is rotated threadedly in an outward direction.