Patent ID: 7622040
Filing Date: 2009-11-24
Classification: A01K,B01F,C02F,Y02W

Abstract:
1. A device for the aeration and circulation of a liquid medium comprising: a housing adapted to float within the liquid medium such that a top portion thereof remains above a top surface of the liquid medium, the housing having a substantially open bottom having a predetermined area, at least one open side portion having an area substantially corresponding to said predetermined area of said open bottom, said at least one open side portion extending substantially continuously from said substantially open bottom portion to said top portion adjacent to said top surface of the liquid medium, and a plurality of remaining closed side portions defining the remainder of said housing and extending substantially continuously from said substantially open bottom to said top portion, thereby defining a substantially open interior portion defined by said plurality of remaining closed side portions of said housing, whereby said liquid medium can be caused to flow into said substantially open bottom and directly out of said at least one open side portion of said housing to create a substantial circulation of said liquid medium; a plurality of hose portions affixed to the bottom portion of the housing substantially parallel to the surface of the medium thus providing an array of hose portions substantially corresponding to said predetermined area of said substantially open bottom, said array of hose portions having a wall with a plurality of pores formed therein, the plurality of pores having an average diameter of between about 0.001 inches and about 0.004 inches and being spaced apart substantially evenly throughout a length of the hose; a gas supply pipe affixed to said base; and means for supplying a gas to said gas supply pipe.