Undertaking
Patent
1980-09-30
1985-07-09
Pinkham, Richard C.
Undertaking
273 55A, A63B 6700
Patent
active
045277966
ABSTRACT:
A method of filling an athletic bag with water and air. After the bag has been assembled and provided with a push-pull valve which communicates with the interior of the bag, water and air are caused to pass through the valve until the bag reaches a predetermined firmness and pressure; then the valve is closed. The firmness of the bag can be controlled by varying the air pressure therein through the push-pull valve. The water and air are confined in a bladder which, before being filled, is essentially the same size and shape as the cover of the bag.
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Brown T.
Kramer Raymond F.
Pinkham Richard C.
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