Aquarium air pump

Details Aquarium air pump Aquarium air pump

1993-05-04

1994-11-01

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

F04B 1700

Patent

active

053603230

ABSTRACT:
An improvement of an aquarium air pump, which is characterized by the fact that one end of an air-compressing diaphragm in the air pump is slipped into the intake valve housing of the air pump, while the other end is bound to a vibrating lever as one unit, that the diaphragm should be made of Teflon.RTM. or silicone rubber, that a limiting rod is placed at an appropriate position in the casing of the air pump and is allowed also to press against the vibrating lever. With the configuration pertaining to the present invention, the air pump can compress air more effectively and the working life of the diaphragm can be prolonged by preventing it from being damaged caused by back pressure in the event the air outlet is clogged.

REFERENCES:
patent: 3825374 (1974-07-01), Kondo
patent: 4671485 (1987-06-01), Saarem
patent: 5052904 (1991-10-01), Itakura et al.
patent: 5232353 (1993-08-01), Grant

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