Golf swing practice device

Claim 1

A golf swing practice device for providing an indication as to the position of a golfer's power arm with respect to a golfer's body during the execution of a golf swing, the practice device comprising: a main body which is configured so that, in an operative position, it can be disposed between the golfer's power arm and the golfer's body, said main body comprising two parts operatively connected together for limited movement toward and away from one another wherein at least one of said parts has an outer concave surface for contacting the arm; securing means attached to said main body for securing the practice device to the golfer's power arm; sensing means comprising a spring loaded switch mounted on said main body between said two parts for movement between a first position and a second position; biasing means normally biasing said two parts of said main body away from each other whereby said spring loaded switch is allowed to move to one of said positions upon movement of said two parts away from each other and being adapted to be moved to the other of said positions as a result of pressure applied to said parts by a golfer's power arm against the bias of said biasing means; and indicating means responsive to said spring bias switch being in one of said positions to provide an indication as to which of said positions said spring biased switch is in, said switch and said indicating means being arranged in an electrical circuit.