David Warren Robey

US Patent:

52227324, Jun 29, 1993

Filed:

Sep 27, 1991

Appl. No.:

7/766383

Inventors:

David M. Robey - Alexandria VA

International Classification:

A63B 6100

US Classification:

273 29A

Abstract:

A device for teaching correct tennis stroke while swinging a tennis racket to hit a tennis ball. The device is comprised of a frame having a pair of spaced apart, triangular shaped side members. An elongated shaft is extended between the side members and has each end attached to a respective side member. A wheel is rotatably mounted on the shaft between the side members and above a ground support surface. Each side member has a configuration to allow the frame to be suspended on a support and above the ground support surface whereby the wheel will be freely rotatable on the shaft when struck by a tennis racket. The wheel is then struck with a glancing blow of a tennis racket during followthrough of the swinging motion of a trainee.

US Patent:

50567853, Oct 15, 1991

Filed:

Jul 26, 1990

Appl. No.:

7/558211

Inventors:

David M. Robey - Alexandria VA

International Classification:

A63B 6100

US Classification:

273 29A

Abstract:

The invention relate to a tennis stroke practice device wherein a shaft having a plurality of angular bends intermediate its end is provided with a handle attached to one of its ends and a wheel rotatably attached to its other end. The device has a size whereby a player can grasp the handle in one of his hands and a tennis racquet in his other hand and practice various tennis strokes by positioning the wheel at various positions relative to his body and strike the wheel with the tennis racquet.