The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2002
Filed:
Feb. 10, 2000
William R. Nelson, Bainbridge Island, WA (US);
Other;
Abstract
An inner housing ( ) is positioned within an outer housing ( ). An gas/liquid mixture is caused to flow along a helical path upwardly through an outer chamber ( ) that is formed by and between sidewalls ( ) of the outer and inner housings ( ). The gas/liquid mixture flows through a passageway ( ) between a top end wall ( ) and an upper end edge ( ), from outer chamber ( ) into an inner chamber ( ). Residual gas is removed from the gas/liquid mixture by a gas-vent device that projects from top end wall ( ) downwardly into the inner chamber ( ). Liquid in the inner chamber ( ) flows downwardly through an outlet opening ( ) into an outlet conduit ( ). The outlet conduit ( ) has an effluent branch that removes liquid from the apparatus. It also includes a second branch conduit that delivers some of the liquid to the inlet of a re-circulating pump ( ). The re-circulating pump ( ) pumps the re-circulated liquid back into the lower end of the outer chamber ( ). New gas and new untreated liquid is added to the re-circulated liquid before it is introduced into chamber ( ). The re-circulated liquid, the new gas and the untreated liquid are admixed into a conduit and are then introduced into the lower end portion of the outer chamber ( ) as an upward swirling helical current.