Patent ID: 8100783
Filing Date: 2012-01-24
Classification: A63B

Abstract:
1. A tennis skill training device, the device consisting of: a grip emulating a tennis racket grip, said grip being sized for being held by a user when employing said device for training, said grip having a length, a circumference, a butt end and a distal end; a single flexible and extendable umbilical having first and second ends, said first end being attached to and emanating from said distal end of said grip, said umbilical being capable of stretching and extending along its axis approximately 1 in from an initial unstretched length; and a first fixed weight attachable to said second end of said umbilical, said first weight having a weight in the range of approximately 13-15 oz, whereby when said first fixed weight is attached to said umbilical and said device is subjected to rotational motion in a vertical plane by a user's arm said device generates a first angular momentum, whereby said umbilical stretches from first at-rest length to a second extended length, and whereby said device exerts an outwardly directed first force on said user's arm that tends to extend said user's arm.