Title:
FINE BUBBLE DELIVERY FOR POTABLE WATER, WASTEWATER, AND CLEAN WATER TREATMENT, METHOD
Document Type and Number:
WIPO Patent Application WO2007065088
Kind Code:
A8
Abstract:
A flexible tubing (10) for fine bubble aeration is provided with an air passageway (20) defined in part by an upper portion (12) and a lower portion (14) . The tubing can be made of a uniform weighted material with more material in the lower portion than in the upper portion. This makes the tubing self-orienting, in that it will tend to orient itself with micro-slits (22) along the upper portion facing upward and the lower portion facing downward when submerged in a body of water. An automated, one-stage production line converts raw tubing material to a finished tubing product without the need for separate processing. A method of coiling the tubing places the micro-slits approximately 90° away from the surface of a spool hub, thereby avoiding a longitudinal arch in the tubing and ultimately preventing roll-over and improper slit orientation after installation in a water body.
Inventors:
HINDE JOHN N (US)
Application Number:
PCT/US2006/061295
Publication Date:
November 06, 2008
Filing Date:
November 28, 2006
Export Citation:
Assignee:
AIR DIFFUSION SYSTEMS A JOHN H (US)
HINDE JOHN N (US)
HINDE JOHN N (US)
International Classes:
B01F3/04; B05B1/20; B26F1/20; B29C48/09; B29C48/11; B29C48/12; B29C69/02; B29D23/00; B65H54/02; F16L11/08; F16L11/118; F16L11/12; F16L11/22; C02F3/20
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