Depressurized tethered tennis ball training device

Details Depressurized tethered tennis ball training device Depressurized tethered tennis ball training device

1976-05-13

1978-05-09

Pinkham, Richard C.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 58C, 273 58B, 273DIG26, A63B 6938

Patent

active

040883167

ABSTRACT:
A tennis training or exercising device in which a depressurized tennis ball is provided with an opening communicating with the interior and exterior of the ball, to allow air to pass freely from the interior of the ball when the latter is struck. A flexible cord is connected to the ball and has one end connected to the ceiling through a pressure-sensitive hook, and the other end connected to a standing weight which is placed on the floor. The passage of air from the interior of the ball to the exterior thereof, permits the ball to oscillate in a controlled manner after being struck. A counter arrangement at the bottom of the cord, will count only correctly applied strokes to the ball.

REFERENCES:
patent: 831605 (1906-09-01), Doyle
patent: 1105329 (1914-07-01), Kleinschmidt
patent: 1554409 (1925-09-01), Coffee
patent: 2045972 (1936-06-01), Tompkins
patent: 2247072 (1941-06-01), Stow
patent: 2751226 (1956-06-01), Conway
patent: 2785643 (1974-01-01), Rich
patent: 3397887 (1968-08-01), Caplin
patent: 3825259 (1974-07-01), Burchett

Affiliated with

Also associated with

Rating

Depressurized tethered tennis ball training device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Depressurized tethered tennis ball training device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Depressurized tethered tennis ball training device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2353624