US4936552A — Aerating apparatus

Claim 1

Independent Claim 144 words

Apparatus for aerating fluids passing therethrough comprising: a tubular housing having a cylindrical inlet section and a cylindrical outlet section between which is an enlarged chamber section, said chamber section having at least one air port through the walls thereof; and a converging frustoconical nozzle concentrically disposed within said tubular housing and the entrance of which substantially conincides with the entrance to said housing inlet section, said nozzle extending through said housing chamber section and having an exit within said housing outlet section so that when fluids are forced through said nozzle a partial vacuum is created in said chamber section inducing air through said air port for mixing with said fluids as they exit from said nozzle and flow through said housing outlet section, the flow area of said housing outlet section being unrestricted from said chamber section to the exit end thereof.

Claim 2

Dependent Claim 144 words

Apparatus for aerating fluids passing therethrough comprising: a tubular housing having a cylindrical inlet section and a cylindrical outlet section between which is an enlarged chamber section, said chamber section having at least one air port through the walls thereof; and a converging frustoconical nozzle concentrically disposed within said tubular housing and the entrance of which substantially conincides with the entrance to said housing inlet section, said nozzle extending through said housing chamber section and having an exit within said housing outlet section so that when fluids are forced through said nozzle a partial vacuum is created in said chamber section inducing air through said air port for mixing with said fluids as they exit from said nozzle and flow through said housing outlet section, the flow area of said housing outlet section being unrestricted from said chamber section to the exit end thereof.

Claim 3

Dependent Claim 20 words

Aerating apparatus as set forth in claim 1 in which said housing chamber section is polygonal in cross-sectional flow area.

Claim 4

Dependent Claim 26 words

Aerating apparatus as set forth in claim 1 in which said nozzle is removable through said entrance of said housing inlet section for repair or replacement.

Claim 5

Dependent Claim 32 words

Aerating apparatus as set forth in claim 1 including a sleeve member of reduced friction material lining the interior of said housing outlet section to reduce frictional flow therethrough and wear thereof.

Claim 6

Dependent Claim 125 words

Apparatus for aerating fluids passing therethrough comprising: an elongated housing having a cylindrical inlet section and a cylindrical outlet section connected by a polygonal chamber section having at least one air port through the walls thereof; and a converging frustconical nozzle concentrically disposed within said inlet and polygonal chamber sections so that a polygonal cross-sectioned annular chamber is formed around said nozzle near the exit thereof, a partial vacuum being created in said annular chamber when fluids are forced through said nozzle inducing air through said air port for mixing with said fluids as said fluids flow through said housing outlet section for exit from said housing, the flow area of housing outlet section being unrestricted from said chamber section to the exit end thereof.

Claim 7

Dependent Claim 125 words

Apparatus for aerating fluids passing therethrough comprising: an elongated housing having a cylindrical inlet section and a cylindrical outlet section connected by a polygonal chamber section having at least one air port through the walls thereof; and a converging frustconical nozzle concentrically disposed within said inlet and polygonal chamber sections so that a polygonal cross-sectioned annular chamber is formed around said nozzle near the exit thereof, a partial vacuum being created in said annular chamber when fluids are forced through said nozzle inducing air through said air port for mixing with said fluids as said fluids flow through said housing outlet section for exit from said housing, the flow area of housing outlet section being unrestricted from said chamber section to the exit end thereof.

Claim 8

Dependent Claim 28 words

Aerating apparatus as set forth in claim 5 in which said housing outlet section is lined with a friction reducing material to increase the life of said housing.

Claim 9

Dependent Claim 44 words

Aerating apparatus as set forth in claim 5 in which said nozzle is provided with a radially extending flange around the entrance thereof and by which said nozzle may be held in place by mating connectors provided on said housing and piping connected thereto.

Claim 10

Dependent Claim 24 words

Aerating apparatus as set forth in claim 7 in which said nozzle is removable through one end of said housing for replacement or repair.

Claim 11

Dependent Claim 36 words

Aerating apparatus as set forth in claim 5 in which said housing is connected by piping to the discharge of a pump the intake of which is in fluid communication with waste water for aeration thereof.

Claim 12

Dependent Claim 37 words

Aerating apparatus as set forth in claim 5 in which said housing is connected by piping to the discharge of a pump the intake of which is in fluid communication with a reservoir for fish living therein.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-25	1993-12-25	1994-06-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-25	1997-12-25	1998-06-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-25	2001-12-25	2002-06-26	$7700.00	Window Closed / Lapsed

Aerating apparatus

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