Patents
Sitemap › E03 - Water supply; Sewerage › E03F - Sewers; Cesspools › E03F 1 - Methods, systems, or installations for draining-off sewage or storm water
Patents for E03F 1 - Methods, systems, or installations for draining-off sewage or storm water (3,565)
07/1992
07/28/1992US5133619 Storm water filtration system for use with conventional storm water collection sewers
07/28/1992US5133374 Apparatus and method for purging medical instruments and disposing of infectious waste
07/23/1992WO1992012299A1 Flush toilet, in particular for vehicles
07/23/1992DE4201074A1 Service station for portable lavatories - has tanks for waste water, fresh water, and chemicals
07/22/1992CN2110668U Precast canal
07/21/1992US5131196 Drywell cover and drywell
06/1992
06/24/1992CN1062183A Vacuum sewerage system with increased lift capabilities having electric air admission controllers
05/1992
05/26/1992US5116516 Deflector plates; low energy; sewage treatment
05/20/1992WO1992008532A1 Vacuum sewerage system with increased lift capabilities having electric air admission controllers
05/19/1992US5114280 Vacuum type sewage collecting system and vacuum valve controller for the same
04/1992
04/22/1992CN2102322U Automatic switching device for clear and dirty water flow
03/1992
03/31/1992US5100266 Pipe connection structure and vacuum-type sewage collecting apparatus incorporating the pipe connection structure
03/11/1992EP0474271A2 External separator for vacuum waste system
02/1992
02/11/1992US5087151 Drainage system
02/11/1992US5086594 Composite drywell, drywell system and method
01/1992
01/29/1992EP0468881A1 Service hookup terminal
01/28/1992US5083885 Laying structure for vacuum sewer pipe of vacuum sewage collecting system
01/21/1992US5082238 Nonjamming vacuum valve having tapered plunger
01/07/1992US5078174 Vacuum sewerage system having non-jamming vacuum valves with tapered plungers
12/1991
12/24/1991US5074718 Vacuum-type sewage collecting apparatus
12/17/1991US5073257 Apparatus for treating water
12/10/1991US5070820 Pet waste disposal device
12/03/1991US5069243 Liquid level control system
11/1991
11/27/1991CN1014915B Infiltration-draining method for underground structure
11/12/1991US5064314 Vacuum sewerage system with increased lift capabilities having electric air admission controllers
11/06/1991EP0454794A1 Vacuum drainage system.
10/1991
10/22/1991CA1290902C Vacuum sewer arrangement
09/1991
09/25/1991EP0448282A1 Separator
09/19/1991WO1991014054A1 Improvement in a sewage
09/18/1991EP0446504A1 Vacuum toilet system
09/17/1991CA2037568A1 Separator
09/11/1991EP0445462A1 Electric air admission controller
09/10/1991CA2028587A1 Electric air admission controller
09/04/1991EP0444646A2 Laying structure for vacuum sewer pipe of vacuum sewage collecting system
09/03/1991US5044836 Electric air admission controller
08/1991
08/28/1991CN1054054A Pollution treatment and the method and equipment for using waste water
08/14/1991DE4004382A1 Rain-water drain system
07/1991
07/10/1991EP0436357A1 Vacuum sewer arrangement
06/1991
06/25/1991US5026407 External separator for vacuum waste system
06/18/1991US5023959 Extendable waste hose system
06/12/1991EP0431460A1 Vacuum pump control apparatus for an evacuating type waste water collecting system
05/1991
05/21/1991US5017041 Leaching system conduit with high rigidity joint
05/21/1991US5017040 Sewage disposal system and method
05/02/1991DE3935988A1 Ejector pump with liq. separator - has nozzle for compressed air supply and radial inlet for liq.
04/1991
04/18/1991DE3942237C1 Drainage noise silencer - includes plastics cylinder with four air intake holes and side air intake slot
04/16/1991US5007117 Vacuum toilet system with simultaneous rinse and discharge
04/02/1991CA1282299C Method of discharging sewage by vacuum and control apparatus for carrying the method into effect
03/1991
03/26/1991US5002592 Waste tank for a vacuum sewage system
03/21/1991DE4001523A1 Sewer system tank emptying mechanism - has vacuum pump following waste water discharge pump
03/07/1991WO1991002854A1 Continuously adjustable v-shaped overflow means
03/06/1991EP0415361A2 Pipe connection structure and vacuum-type sewage collecting apparatus incorporating the pipe connection structure
03/06/1991EP0415360A2 Vacuum-type sewage collecting apparatus
03/06/1991EP0415359A2 Vacuum-type sewage collecting system and vacuum valve controller for the same
03/06/1991EP0414884A1 Manually operated vacuum flush water closet
03/01/1991CA2024026A1 Vacuum-type sewage collecting system and vacuum valve controller for the same
02/1991
02/20/1991EP0413129A2 Removal method and apparatus for fluids containing production residues
01/1991
01/08/1991US4983069 Drainage
01/08/1991US4982533 Drywell with plugs, drywell system and method for controlling the flow and direction of surface water
01/02/1991CN1048246A Method and system for pollution control and utilization of waste water
12/1990
12/27/1990EP0404170A1 Installation for the suction of fluids
12/04/1990US4974264 Manually operated vacuum flush water closet
11/1990
11/20/1990US4971690 Waste water drainage and recovery system
10/1990
10/10/1990CN1046007A 真空排放系统 Vacuum Release Systems
09/1990
09/21/1990WO1990011415A1 Manually operated vacuum flush water closet
09/21/1990CA2028845A1 Manually operated vacuum flush water closet
09/13/1990DE3924073A1 Systems draining tanks by suction tubes - vary direction or rate of flow by artificially varying direction or cross=section of pipes to eliminate sec. flows also
09/11/1990US4955091 Method and apparatus for a vacuum assisted toilet system
09/04/1990WO1990010123A1 Vacuum drainage system
08/1990
08/22/1990CN1044839A Infiltration-draining method for underground structure
05/1990
05/29/1990US4928326 Vacuum sewer arrangement
05/10/1990DE3837150A1 Process for securing filling, discharging and decanting stations for environmentally hazardous fluids
05/08/1990US4923330 For receiving water runoff
04/1990
04/18/1990EP0363751A2 Device to collect polluted cleaning water produced when washing a motor vehicle
04/11/1990EP0363012A1 Vacuum toilet system
02/1990
02/28/1990EP0355153A1 Liquid level control system.
01/1990
01/18/1990DE3823614A1 Method and installation for flow measurement
01/11/1990DE3822661A1 Filter apparatus
12/1989
12/14/1989DE3820126A1 Domestic water systems
11/1989
11/15/1989EP0341595A1 Control device for a vacuum-actuated suction valve on a vacuum conduit, especially for sewage
10/1989
10/17/1989US4875178 Method to control the discharge of effluent
10/05/1989DE3809583A1 Process and apparatus for the discharge of rainwater
09/1989
09/20/1989EP0333045A1 Vacuum sewage conveying system
09/14/1989DE3803633A1 Arrangement for channelling away sewage (waste water) in the form of a pressure drainage system
09/12/1989US4865631 Vacuum sewage system
09/07/1989DE3901815A1 Apparatus for draining sewage-collecting tanks in residential areas
08/1989
08/30/1989EP0330490A1 Vacuum sewage system, waste tank therefor and transport vehicle incorporating such a system
08/16/1989EP0328457A1 Vacuum sewage transport method, vacuum sewage transport system and delay controlling device for use in this system
08/10/1989WO1989007293A1 Liquid level control system
06/1989
06/21/1989CN2039717U Half open type down pipe opening
06/13/1989US4839051 Waste water flows through sloping zone containing soil and plants; free of chemical additives
06/13/1989US4838731 Septic tank distribution box system
06/08/1989DE3546561C2 Subatmospheric-pressure sewerage system with a multiplicity of domestic service connections
05/1989
05/03/1989EP0313786A2 Vacuum toilet system
04/1989
04/25/1989US4824287 Septic system
04/11/1989US4819279 Vacuum toilet system
03/1989
03/21/1989CA1251331A1 Plant for treatment of urban runoff water
03/02/1989DE3727661A1 Pneumatic control device for a shut-off valve in a subatmospheric-pressure sewage line
01/1989
01/17/1989US4798028 Downspout trap and clean out
01/05/1989DE3718700A1 Arrangement for channelling away sewage (waste water) in the form of a vacuum-drainage means
01/03/1989CA1247977A1 Device in a vacuum transportation system for liquids, preferably a vacuum sewage system
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