Back to results
US 7,115,052 B2Granted
Methods and devices for sport ball training
AssigneePro Tennis Training, Inc.
InventorsJohn L. Wardle, James M. Jensen
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePro Tennis Training, Inc.
InventorsJohn L. Wardle, James M. Jensen
Estimating the term…
Sport ball training devices and methods for releasably holding a tennis ball or other sport ball at an appropriate height for the practice of striking the ball, either directly or indirectly with a racket or the like. An embodiment may have a support device with a base and an adjustable vertical tubular assembly for the support of a transverse arm from which a ball sling is suspended. A retainer member of the ball sling circumferentially holds a sport ball. An embodiment of the retainer member may be made from an elastometric material that lightly squeezes the ball with sufficient force to restrain it, but releases easily when the ball is hit so that the trajectory of the ball is not affected by the presence of the retainer member nor is the racquet significantly affected by the presence of the ball sling generally.
A sport ball training device, comprising:
A sport ball training device, comprising
A sport ball training device, comprising
A sport ball training device, comprising:
A ball sling for a sport ball training device, comprising at least one resilient sling member having a first end, a second end, and an increased resistance to bending from the second end to the first end and a retainer member which is secured to the second end of the resilient sling member and which is configured to releasably secure a sport ball.
A ball sling molded in a monolithic structure from a uniform material comprising at least one resilient sling member having a first end, a second end and a retainer member secured to the second end of the at least one resilient sling member comprising a loop with an elongate loop element having a substantially round cross section at a bottom portion of the loop and configured to be induced to rotation by rotation of a sport ball in the loop.
Dependencies are inferred from the claim text.