Patent ID: 8162780

Claim:
A training device for hitting a ball, comprising: a spiral pipe composed of a plurality of dual-awl ring members connected together to form an adjustable pipe, the spiral pipe comprising: a top pipe at an upper end thereof configured to connect with a socket, the socket having a free end to form a recess, and a bottom pipe with a positioning sleeve at a lower end thereof with a first stop ring at a distal end thereof, the distal end of the bottom pipe having inner threads to engage with outer threads formed on an upper section of the positioning sleeve, the positioning sleeve provided with a second stop ring at a lower section of the positioning sleeve; and a base in the shape of a home plate, the base comprising: a middle plate with a through hole extending therethrough and a stepped trough underneath the through hole, and a front plate, the middle and front plates having relative connecting surfaces which are formed with notches and protrusions to engage with each other such that the protrusions are engaged with the notches for assembling the middle and front plates to become one-piece, the bottom pipe inserted in the through hole with the first stop ring to be blocked on the through hole, the positioning sleeve inserted in the stepped trough with the outer threads to engage with the inner threads of the bottom pipe, the second stop ring secured in the stepped trough, the first stop ring and the second stop ring secured in the middle of the base such that the spiral pipe is mounted on the base, the socket fitted on the top pipe.