Ball throwing apparatus kit

Details Ball throwing apparatus kit Ball throwing apparatus kit

1998-08-17

1999-12-07

Ricci, John A.

Mechanical guns and projectors

Spring

Elastic band

A63B 6512

Patent

active

059965657

ABSTRACT:
A kit for assembly into an apparatus for throwing a whiffle ball comprising an elastic catapult for attachment to vertical posts and a calibrated speed strap for aligning the throw and estimating the speed of the ball. The catapult comprises a pouch with surgical tubing for propulsion and straps with hook and loop tape for affixing the catapult to the vertical posts.

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patent: 4873964 (1989-10-01), Bonoan
patent: 5249564 (1993-10-01), Peachey
patent: 5431145 (1995-07-01), Strait et al.
patent: 5657984 (1997-08-01), Leo

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