Apparatus for facilitating the practicing of tennis and like games
First Claim
1. Apparatus for indicating various stages of strokes which are practiced by the user of a ball-striking implement, particularly a tennis racket, having a handle and a ball-contacting portion, comprising a support which is connected to the handle;
- annular guide means provided on said support and spacedly surrounding the handle; and
signal generating means including a carriage movably mounted on said guide means and means for producing signals in preselected positions of said carriage with respect to said guide means.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus which indicates various stages of forehand or backhand strokes which are practiced by a tennis player with or without a ball, with or without an opponent and without supervision has a disk-shaped support which is mounted on the innermost part of the handle of a tennis racket, a circumferentially complete rail at the periphery of the support, a carriage which is freely slidable along the rail, and a set of adjustable bells mounted on the support radially inwardly of the rail to be struck by an elastic prong on the carriage in selected angular positions of the carriage, namely, in those positions which designate important parts of the stroke practiced by a tennis player. The carriage can be tied to an elastic band so that the support and its rail normally move relative to the carriage, or the carriage is free to slide along the rail by inertia and/or under the action of gravity.
-
Citations
20 Claims
-
1. Apparatus for indicating various stages of strokes which are practiced by the user of a ball-striking implement, particularly a tennis racket, having a handle and a ball-contacting portion, comprising a support which is connected to the handle;
- annular guide means provided on said support and spacedly surrounding the handle; and
signal generating means including a carriage movably mounted on said guide means and means for producing signals in preselected positions of said carriage with respect to said guide means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- annular guide means provided on said support and spacedly surrounding the handle; and
Specification