Patent ID: 8393980

Claim:
A swing ball device with adjustable heights for hitting practice, featured with varied swing frequencies and paths to enrich training, including i) an upper connecting pipe, being hollow within; ii) a supporting cup for receiving a ball, said supporting cup being made of soft materials, said supporting cup including ii. a) a pair of arc laterals, extending upwards from the bottom of the supporting cup, with the vertical height of the two arc laterals being greater than one-half of the diameter of the ball for securing the ball for reducing the eccentric force resulting from the swing motion of the ball during the pre-hitting initial shake and after each hit, and ii. b) a cup ring, extending upwards from the supporting cup, with the vertical height of the cup ring being less than one-fourth of the diameter of the ball for substantial exposure of the ball for hitting; iii) a swing piece, an elastic piece with an upper end and a lower end, further including iii. a) a plurality of through interval holes for different vertical positionings of the swing piece in the swing ball device; iv) a lower connecting pipe including a lower section and a hollow center, disposed with iv. a) a through slot for securing the lower end of the swing piece, a iv. b) an extension for positioning, and iv. c) a lower connecting pipe through hole for corresponding to the interval holes of the swing piece; v) an upper pipe sleeve, inserted into the hollow center of the lower connecting pipe, and disposed with v. a) an extended ring at the bottom thereof for pressing against the lower section of the lower connecting pipe, v. b) an upper pipe sleeve hole, corresponding to the interval holes of the swing piece, and v. c) a center thorough hole at the center of the upper pipe sleeve for receiving the upper end of the swing piece; vi) a lower pipe sleeve, including vi. a) a sleeve through slot for securing the lower end of the swing piece, and vi. b) a vertically oriented extension for positioning; vii) a device seat, including vii. a) a plurality of recesses with different orientations for securing the vertically oriented extension of the lower pipe sleeve; viii) a stopping ring, an elastic ring sleeved onto the upper connecting pipe and exposed outside of the upper connecting pipe.