US Patent 8246493 Batting practice apparatus

A batting practice apparatus able to be installed on any flat surface includes a base, a batting unit, an air-pump unit and at least one suction unit. The batting unit is mounted on the topside of the base while the air-pump unit is installed in the interior of the base and connected with the batting unit, and the suction unit is also positioned in the base and communicates with the air-pump unit. When receiving external force to swing, the batting unit will actuate the air-pump unit to pump air out of the suction unit and form a vacuum chamber between the suction unit and the flat surface, able to increase the suction strength of the suction unit and lighten the batting practice apparatus.