Self priming aquarium filter

Details Self priming aquarium filter Self priming aquarium filter

1987-03-27

1988-08-02

Hruskoci, Peter

Liquid purification or separation

Structural installation

Closed circulating system

2104162, 119 5, 137576, E04H 320

Patent

active

047612274

ABSTRACT:
An aquarium filter for mounting externally of an aquarium tank. The filter includes an intake chamber for receiving contaminated aquarium water from the aquarium tank and a filtering chamber in flow communication with the intake chamber for filtering of the contaminated water and subsequent return of the clean water back to the aquarium tank. An impeller unit driven by a rotor magnetically coupled to a removably attached electromagnetic stator unit serves to draw the water from the aquarium tank to the intake chamber through a removable intake tube assembly. A partition wall separates the intake chamber from the filtering chamber for the water filling the intake chamber to overflow the partition wall into the filtering chamber. Upon stoppage of the impeller, the water from the intake chamber siphons back into the aquarium tank. A narrow passageway provided in the partition wall provides a limited reverse flow of water from the filtering chamber back to the intake chamber upon drainage of the water from the intake chamber due to this siphoning action. After the siphon breaks, this reverse flow remains in the intake chamber to self-prime the filter for restarting.

REFERENCES:
patent: 3669297 (1970-06-01), Willinger
patent: 3892663 (1975-07-01), Wiedenmann
patent: 4512885 (1985-04-01), Willinger
patent: 4602996 (1986-07-01), Willinger
patent: 4645593 (1987-02-01), Dank et al.

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