초록 ▼

Apparatus is disclosed which is operable to either set or serve balls on various trajectories to facilitate a player\s practice of the game of volleyball. A guide trough supplies balls to the striking position, and a motor drives the apparatus to strike successive balls, at predetermined intervals,

Apparatus is disclosed which is operable to either set or serve balls on various trajectories to facilitate a player\s practice of the game of volleyball. A guide trough supplies balls to the striking position, and a motor drives the apparatus to strike successive balls, at predetermined intervals, to provide maximum utilization of a player\s time during practice. The apparatus may be adjusted to vary the force delivered to the balls and to vary the trajectory as desired.

대표청구항 ▼

A volleyball projecting apparatus comprising a support frame including a plurality of legs for supporting the apparatus on a floor surface and wheel means mounted on said frame and engageable with a floor surface for supporting the frame for movement over the floor, a machine housing having an openi

A volleyball projecting apparatus comprising a support frame including a plurality of legs for supporting the apparatus on a floor surface and wheel means mounted on said frame and engageable with a floor surface for supporting the frame for movement over the floor, a machine housing having an opening in a wall thereof, horizontal shaft means supporting said housing on said frame for pivotal movement between a first position useful in the practice of ball spiking and a second position useful in the practice of returning serves, adjustable clamping means extending between said housing and said frame for releasably clamping said housing at said first and second positions and at any rotative position therebetween, an elongated striking arm having ball striking means adjacent one end thereof, means mounting said arm within said housing for pivotal movement about an axis parallel to the axis of said horizontal shaft means, biasing means mounted within said housing and resiliently urging said arm to a fully raised position in which said one end projects outward through said opening, motor drive means within said housing and operable to periodically move said arm to a fully lowered position against the resistance of said biasing means and to release said arm at said lowered position to be forcefully returned to the raised position by said biasing means, ball support means for supporting a volleyball at a striking station in position to be struck by said striking means upon movement of said arm from the fully lowered to the fully raised position, and adjustable resilient force limiting means for selectively varying the force delivered to a ball at the striking station by said striking means adjustable means for adjusting the position of the force limiting means, said adjustable means being operable to variably position the limiting means relative to said arm.