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| Number | Title | Issue Date |
| 4334991 | Baffles for septic tank ports Baffles for septic tank ports are of a plastic stock that is inert with respect to reagents commonly existing in them. Each baffle is so dimensioned that its side edges engage the interior surfaces of the tank on opposite sides of incoming or exiting flow... | 06/15/1982 |
| 4333831 | Evaporation septic tank sewage system An improved apparatus for treatment of sewage is disclosed in which the overflow fluid sewage from a septic tank is directed into at least one enclosed evaporation tank having at least one upwardly extending vapor stack. A conduit may be provided for intr... | 06/08/1982 |
| 4332681 | Junction and connection terminal for the service of fixed or mobile premises in particular for the supply of a sanitary unit which may be itself attached to a caravan or a camping-car A junction and connection terminal between, on one hand, a drinking water mains and an electric mains and, on the other hand, a fixed or mobile sanitary unit. This terminal also ensures the connection between this unit and a system for discharging sewage ... | 06/01/1982 |
| 4325823 | Wastewater treatment system A system for treating wastewater comprising a treatment tank divided into three fluidly interconnected compartments, the first compartment being a blending cell divided into an upper anaerobic compartment and a lower aerobic compartment. The second compar... | 04/20/1982 |
| 4319998 | Monitor for an effluent disposal system A monitor for an effluent disposal system for preventing suspended solids in an effluent from clogging a disposal field. A separate monitor housing having an inlet and an outlet is installed in the piping interconnecting a septic tank to a disposal field.... | 03/16/1982 |
| 4298470 | Sewage septic system with liquid flow drainage control A sewage septic tank system including a septic tank for receiving sewage discharge, a liquid junction box operatively connected to receive liquid discharge from the septic tank, at least one, and preferably a plurality of drainage lines opening into the l... | 11/03/1981 |
| 4293421 | Method and equipment for a wrap-around upflow submerged anaerobic filter for sewage A method and equipment for secondary sewage treatment by anaerobic treatment of sewage after the sewage has passed from a septic tank or other primary treatment device. The effluent from the primary treatment device is directed to the lower annular volume... | 10/06/1981 |
| 4233155 | Apparatuses for the anaerobic digestion of natural organic waste An apparatus for the anaerobic digestion of natural organic waste comprises a feed tank, a digester and an outlet tank. There is further provided feed means which feeds waste to be digested from the feed tank to the digester at an adjustable continuous ra... | 11/11/1980 |
| 4230578 | Sewage effluent volume control and alarm arrangement for pressurized sewage disposal system Sewage effluent from a septic tank collects in a holding tank before being pumped out into a disposal field. The pump is turned on and off automatically by a control circuit which includes maximum and minimum level float switches in the holding tank, so t... | 10/28/1980 |
| 4201597 | No dig seepage pit cleaner An apparatus which eliminates the need of digging so to expose a house sewage seepage pit in order that it may be periodically cleaned out; the apparatus consisting of equipment that can be lowered down the house sewer line and into the septic tank from w... | 05/06/1980 |
| 4196082 | Combination of a biological dry toilet and a biological waste water purifying plant A combination of a biological dry toilet and a biological waste water purifying plant. In the combination the heat and coarse sludge of the so called grey water from households is recovered in the dry toilet to which also the fine sludge from the waste wa... | 04/01/1980 |
| 4172799 | Outlet for septic tanks A septic tank system having an improved outlet which may be readily installed in existing septic tanks without modification of the tank or outlet fittings, to prevent the discharge of particles of sewage suspended in the effluent from passing directly int... | 10/30/1979 |
| 4132643 | Sludge and slime separating and settling device This invention is related to a sludge and slime separating and settling device which typically comprises a container with a bottom and a lower, truncated conical part, an upper, truncated conical part with a spillover overflow extending around the upper e... | 01/02/1979 |
| 4097380 | Septic tank-leaching pool arrangement A septic tank for use with a leaching pool is provided which has a cylindrical portion forming a chamber for treatment of raw sewage. A ring encircles the cylindrical portion for mounting the septic tank on the upper wall edge of the leaching pool. Positi... | 06/27/1978 |
| 4084269 | Arrangement for mouldering organic waste material An arrangement for mouldering organic waste material is disclosed, comprising a container in which an inclined path is provided along which waste material supplied to the container may slide under the action of gravity while undergoing a mouldering proces... | 04/18/1978 |
| 4024060 | Sewage clarifier system Effluent flows into a settling pipe channel or conduit and is prevented from discharge while the solids are settling, by means of airlocks. When the solids have settled, one airlock is opened and the clarified effluent is drawn off and replaced by unclari... | 05/17/1977 |
| 4002561 | Method and apparatus for aerobic sewage treatment An aerobic sewage treatment method and apparatus for use with a conventional septic system collection tanks having an inlet conduit (baffle) and an outlet conduit (baffle). A separate treatment vessel is mounted horizontally above the septic tank, the ves... | 01/11/1977 |
| 3986963 | Septic tank tee A plastic septic tank tee for use in a septic tank comprises an elongate tubular body member, a relatively short tubular branch member secured to the body member between the ends thereof and means carried by the branch member for aiding in anchoring and r... | 10/19/1976 |
| 3956137 | Sewage septic system for a plurality of drain fields A sewage septic tank is described having a diversion system for diverting effluent from the tank from one drain field to another. A "Y" is provided on the outlet pipe of the tank to enable the effluent from such tank to be directed to either one of two dr... | 05/11/1976 |
| 3954612 | Septic tank system A septic tank system is provided with an indicator above the ground surface to indicate the water level in the tributaries leading from the tank so that any excess water therein may be pumped out before it causes a back up of sewage upstream of the septic... | 05/04/1976 |
| 3948408 | Pump station structure A horizontally elongated container for an underground equipment installation which includes a flat floor and ceiling along with semi-cylindrical end shells. The container is reinforced by rigid-frame beam rings around a flat-sided center section.... | 04/06/1976 |
