Protein skimmer

Details Protein skimmer Protein skimmer

2007-06-21

2008-11-04

Prince, Fred (Department: 1797)

Liquid purification or separation

Structural installation

Closed circulating system

C210S167260, C210S905000

Reexamination Certificate

active

07445706

ABSTRACT:
A protein skimmer for filtering and cleaning water in an aquarium having a foam generating assembly having an air chamber (73) and a nozzle (74) in the air chamber, the nozzle being provided with a plurality of air holes (741) and being connected to an inlet tube (71), the inlet tube communicating with a foam cavity within a vertical guide tube (20) for foam, the guide tube (20) generally being tapered as a whole and including an open upper end (202), a bottom end (203) and a hollow cone-shaped circumferential wall being formed between the upper end and the bottom end and encircling the foam cavity (21) thereby tapering toward and communicating with the upper end (202).

REFERENCES:
patent: 3616919 (1971-11-01), Feddern et al.
patent: 3957017 (1976-05-01), Carmignani et al.
patent: 4972801 (1990-11-01), Hunt
patent: 5078867 (1992-01-01), Danner
patent: 5380160 (1995-01-01), Chen
patent: 5665227 (1997-09-01), Watt
patent: 5800704 (1998-09-01), Hansen
patent: 6303028 (2001-10-01), Marks et al.

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