Structure of air pump for fish bowl

Details Structure of air pump for fish bowl Structure of air pump for fish bowl

1987-09-23

1988-08-09

Croyle, Carlton R.

Pumps

With muffler acting on pump fluid

417313, 417413, 417566, 181264, F04B 4504, F04B 3900

Patent

active

047624701

ABSTRACT:
A structural improvement made in the air pump usable in either a single or a plurality of fish bowls. The diaphragms used to prevent the air from flowing in reverse are specially designed in a shape which can be inserted into the outlet of air circulating ports of the pump so as to prevent the diaphragms from slipping away and detaching from the air circulating ports, and finally losing the one-way discharge function accordingly.

REFERENCES:
patent: 3838944 (1974-10-01), Kolfertz
patent: 3900276 (1975-08-01), Dilworth
patent: 4608000 (1986-08-01), Tominaga
patent: 4666378 (1987-05-01), Ogawa

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