Air pump

Details Air pump Air pump

1984-12-07

1986-08-26

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

310 30, F04B 1704

Patent

active

046080007

ABSTRACT:
An air pump for use in combination with a household aquarium, the air pump comprising an electromagnet having an inner iron core, a coil arranged around the inner iron core, and a cylindrical outer iron core arranged around the coil; and a bellows unit having a permanent magnet whose magnetic pole is extended toward the inner iron core but spaced therefrom, and a diaphragm operated by the permanent magnet.

REFERENCES:
patent: 4259653 (1981-03-01), McGonigal

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