Amusement devices: toys – Operated by relatively moving fluid or pressure differential – Including variable-size fluid chamber to move fluid
Patent
1989-08-07
1990-05-08
Hafer, Robert A.
Amusement devices: toys
Operated by relatively moving fluid or pressure differential
Including variable-size fluid chamber to move fluid
446156, 446267, 273 1L, 40406, A63H 2910, A63H 2300, A63H 352, A63B 6700
Patent
active
049234293
ABSTRACT:
A bubble-propelled amusement device in which play pieces are dispersed in a water bath contained in an enclosed transparent tank having on its bottom wall an air nozzle and having in the air space above the bath an air intake, the pieces normally tending to sink toward the nozzle. Below the tank is a pump assembly comprising an air chamber coupled to a player-operated bellows, the chamber being provided with an air outlet and an air inlet, each having a check valve therein. The air outlet is coupled to the nozzle so that when the bellows is actuated by the player and compressed, the resultant positive air pressure in the chamber causes the outlet valve to open to feed air into the nozzle which injects into the water bath a stream of air bubbles that act to propel play pieces toward a target, the bubbles then being discharged into the air space. When the bellows is released by the player and permitted to expand, the resultant negative air pressure in the chamber causes the inlet valve to open to draw air from the air space into the chamber. Thus the pump assembly forms with the tank a closed air loop and is isolated from the water therein.
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Ebert Michael
Hafer Robert A.
Lewco Corp.
Muir D. Neal
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