Rainwater tank cleaning system

Details Rainwater tank cleaning system Rainwater tank cleaning system

2005-07-26

2005-07-26

Upton, Christopher (Department: 1724)

Liquid purification or separation

Gravitational separator

Heavier constituent trap, chamber, or recess

C210S536000, C210S538000

Reexamination Certificate

active

06920984

ABSTRACT:
A rainwater cleaning system for a water tank comprises a pipe element having a closed end located on the floor of the tank. The pipe element also has an open end connectable to an outflow pipe from the tank. Located near the closed end of the pipe element is at least one hole. The cross sectional area of the hole preferably at least equals the cross sectional area of the pipe outflow.

REFERENCES:
patent: 1430425 (1922-09-01), Widme
patent: 2179246 (1939-11-01), Applebaum
patent: 3224593 (1965-12-01), Ross
patent: 3951816 (1976-04-01), Bascope et al.
patent: 4406789 (1983-09-01), Brignon
patent: 5435924 (1995-07-01), Albertson
patent: 5552050 (1996-09-01), Valentin
patent: 6371308 (2002-04-01), Zhou
Copy of the Examination Report dated Apr. 24, 2002 from New Zealand Intellectual Property Office.

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