Noise-preventative aquarium pump

Details Noise-preventative aquarium pump Noise-preventative aquarium pump

1991-05-28

1992-08-11

Vrablik, John J.

Pumps

With muffler acting on pump fluid

417413, 181232, 181240, F04B 4300, F01N 702

Patent

active

051374323

ABSTRACT:
An aquarium pump includes an air-delivery silencer connected with an air-pumping device encased in two covers mounted on a base portion having a silencing box provided with a plurality of sinuous air passages in the box for reducing a sound transmission speed and pressure of sound wave caused by the operating pump for greatly reducing its noise, and a metal plate embedded in a bottom plate formed in the base portion having a plurality of spring-like cushioning supporting legs secured under the bottom plate for further reducing vibrations caused by the operating pump for preventing noise pollution from an aquarium pump.

REFERENCES:
patent: 2228565 (1941-01-01), Haddaway
patent: 3539276 (1970-11-01), Matsuura
patent: 3671151 (1972-06-01), Duke
patent: 3825374 (1977-07-01), Kondo
patent: 3830596 (1979-08-01), Kondo

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