Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Reexamination Certificate
1999-11-03
2001-12-11
Gulakowski, Randy (Department: 1746)
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
C134S008000, C134S022100, C134S022110, C134S022120, C134S103100, C134S195000, C134S196000
Reexamination Certificate
active
06328812
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a pipeline-cleaning method and device thereof for removing foreign dirt or sediment efficiently in pipelines.
For dissolving and removing tenacious dirt in pipelines, various dissolvent lotions have been used often in the conventional cleaning methods to draw only limited efficacy with an accompanied side effect of pipeline corrosion to frequently result in aftereffects of pollution.
In view of abovesaid imperfection, after years of constant effort in research, the inventor had invented a means (U.S. Pat. No. 5,941,082) which points to clean the dirt or sediment within the pipelines of an air conditioner. Still, particles, formed by the dirt and sediment which is washed out from the pipelines, remain moving around in said means, being unable to capture the particles in a filter unit of said means, causing a lower efficiency indeed.
However, in order to overcome the aforesaid drawback of the prior invention, the inventor has consequently developed and proposed this improved method and device pertaining as to easily clean the dirt and sediment within pipelines.
SUMMARY OF THE INVENTION
This invention is proposed to eliminate abovesaid imperfection and provide a pipeline-cleaning method and device thereof which is built and applied by firstly forming a sealing circuit including a pipeline pending cleaning, a pressure control device, and two units of pipeline-cleaning device. A storage tank filled with rigid granules in each pipeline-cleaning device is provided with a filter net unit at its lower portion and a filter unit at its upper portion. When cleaning, a pressurized liquid is supplied by the pressure control device to drive the granules circulating the circuit and thereby remove dirt and sediment deposited on the pipe wall by collision and rubbing of the granules to the pipeline inner wall.
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Birch & Stewart Kolasch & Birch, LLP
Gulakowski Randy
Wilkins Yolanda E.
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