Device for catching a ball

Device for catching and throwing an aerodynamic disc

Device for facilitating application of variable tension to sport

Device for holding chalk for application to tips of pool cues

Device for instruction in the game of bridge and method of and d

Device for intercepting and deflecting a moving body

Device for locating the position of impact of a projectile

Device for measuring swing data of baseball bat

Device for preventing tennis elbow

Device for producing a block-built picture

Device for reducing vibrations of a tennis racquet

Device for setting a golf tee

Device for simulating breaking football tackles

Device for supporting a ball container from a tennis racket

Device for teaching batting techniques

Device for tennis instruction

Device for the attachment of the head of a golf club on the hand

Device for the automatic operation of international metallic sil

Device for the practice of golf

Device for the protection of the strings of a ball racket, parti