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(11)    Patent No :    AP 2604    (73) Applicant(s)       
(21)    Application No :    AP/P/2008/004688    CARLISLE Mathew Benedict, 51 Kelvin Place, Durban North       
            4051, Kwa Zulu Natal,       
                   
(22)    Filing Date :    21.12.2006    South Africa       
(24)    Date of Grant &    27.02.2013           
                   
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    CARLISLE Mathew Benedict, South Africa   
    ZA    2006/02524    28.03.2006    (74) Representative   
(84)    Designated State           
               
    BW  KE   MZ    SZ   TZ        HONEY & BLANCKENBERG   
               
(51)    International    Classification    E03F 5/18 (2006.01)   



(54)    Title

Aeration system for tank

(57)    Abstract

An aeration system, for liquid tanks, includes an outlet (14) from the tank through which liquid is drawn by a circulating pump (18) to which is connected a down-pipe (28) located in the tank via an inlet pipe (20) which

includes an in-line venturi (22) which entrains air in the liquid. The down-pipe (28) is of greater diameter than the inlet pipe (20) and has an outlet (30) at a

low -level in the tank which is adapted to release liquid and entrained air in a horizontal plane to ensure efficient dispersion of air throughout the liquid in the tank

(56)    Documents Cited :    GB-1163780 A    FR-2156376 A

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