Games using tangible projectile – Playing field or court game; game element or accessory... – Means removably supporting projectile in position to be...
Patent
1997-03-24
1998-09-01
Brown, Theatrice
Games using tangible projectile
Playing field or court game; game element or accessory...
Means removably supporting projectile in position to be...
124 16, 273129S, A63B 6940
Patent
active
058002880
ABSTRACT:
A sport training apparatus for projecting a ball into the air for training an athlete in the proper technique of hitting or catching the ball. The apparatus includes ball projecting means and a spring connected thereto for movement between a cocked state and an actuated state. The spring is held in the cocked state by a partial vacuum automatically developed within an air chamber which is created when a piston enters a cylinder. To cock the apparatus for use, the ball projecting means is pushed down which, in turn, causes the piston to enter the cylinder and create the air chamber. A check valve is connected to the air chamber to provide unrestricted air exit from the air chamber as the piston enters the cylinder. A pneumatic control release is connected to the air chamber for allowing ambient air to enter the air chamber for releasing some or all of the partial vacuum to actuate the spring thereby causing the ball projecting means to propel the ball into the air where it can be hit or caught by the athlete.
REFERENCES:
patent: 2170373 (1939-08-01), Kind
patent: 2664077 (1953-12-01), Moore
patent: 2891795 (1959-06-01), Glintz
patent: 3949518 (1976-04-01), Lenza
patent: 5251081 (1993-10-01), Rooks
patent: 5597160 (1997-01-01), Mims
Brown Theatrice
Petrinec Robert G.
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