US3590836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewerage transmission system
Assignee: Dr-Ing W Zander Gesellschaft fur Rein-Und Abwassertechnik Mbh Firma
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Filing: 1968-09-25
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Granted: 1971-07-06
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Expires: 1988-09-25
Abstract
Abstract A series of controlled discharge collection stations are linked to a central sewerage transmission pipe, having a relatively small diameter, with conduits pressurized in part with air to create turbulence and minimize settlement within the pipe.
Inventors
- 👤 Ernst Kuntze
- 👤 Wilhelm Zander
- 👤 Bernd Zander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/006; E03F1/007; E03F3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0379; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/4238; Y10T137/4245; Y10T137/4259
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
29 words
Apparatus for the conveyance of waste matter as set forth in claim 1, wherein: said first, second and third flushing means to supply fluid under pressure are air compressors.
Claim 2
Dependent Claim
340 words
Apparatus for conveyance of sewage waste containing both solid and liquid matter comprising: a main pressure conduit for sewage waste collection and for transmission of the solid and liquid sewage matter to a distant central location, a plurality of waste collection stations for receiving the sewage waste, a connective pressure conduit connecting each said waste collection station to the main pressure conduit, a valve means in each said connective pressure conduit between its respective collecting station and said main pressure conduit to permit the sewage waste to flow only in the direction from the collection station to the main pressure conduit, means for supplying compressed air to the sewage waste at the collecting station to (a) convey sewage waste from the collection station through the said valve and into the main pressure conduit and (b) build up sufficient pressure in the main pressure conduit to convey the said sewage waste received from the collection station along the main pressure conduit towards said central location during times when the said valve is open and sewage waste is being conveyed into the main pressure conduit, sensing means for sensing the flow rate of sewage waste in the main pressure conduit, and flushing means separate from said waste collection stations for introducing only flushing fluids free of waste matter under pressure into the main pressure conduit, said flushing means being operable, in response to the sensing by the sensing means of a low flow rate insufficient to cause waste material to be conveyed along the main pressure conduit, to flush the main pressure conduit to transport sewage waste along the main pressure conduit and to prevent an accumulation of solid sewage waste matter in the main pressure conduit, whereby the flushing means cleans and transports waste in the main pressure conduit when the normal conveying pressure, that is the pressure derived from the compressed air at the collection stations and operable only when waste is being transmitted from that collection station into the main pressure conduit, is at a low level of operation.
Claim 3
Dependent Claim
81 words
An apparatus for conveyance of sewage waste matter according to claim 3, wherein each of said flushing means and said means for supplying compressed air to the sewage waste includes an air compressor, and further including control console means operatively connected to said air compressors, sensing means within said waste collection stations and linked with, and capable of activating the air compressor in the collection stations through said control console means according to the quantity of fluid within each collection station.
Claim 4
Dependent Claim
51 words
An apparatus for the conveyance of waste matter according to claim 3 wherein the sensing means is a pressure switch operatively connected to the Main pressure conduit to measure the pressure therein, wherein the pressure is proportional to the flow rate of the sewage waste matter in the main pressure conduit.
Claim 5
Independent Claim
262 words
A method for conveying sewage waste containing both solids and liquid matter comprising the steps of: collecting sewage waste at a plurality of waste collecting stations which are each connected to a main pressure conduit through a connective pressure conduit in which is located a valve which permits waste to flow only in the direction from the collection stations to the main pressure conduit, pressurizing the waste at the collecting stations by introducing compressed air into said sewage waste, conveying the sewage waste through the connective pressure conduits through said valve and into the main pressure conduit by further introduction of pressurized air into the sewage waste in the collection stations, conveying the sewage waste along the main pressure conduit under the force of the pressure of the compressed air derived at the collection stations, said air being transmitted through the connective pressure conduits to the main pressure conduit as the waste is being transmitted along said connective pressure conduits into the main pressure conduit, and, during periods when the volume of sewage waste transmitted from the collection stations through the connective pressure conduits is sufficiently low that the pressure force transmitted from the collection stations through the connective pressure conduits to the main pressure conduit is insufficient to cause movement of sewage waste along the main pressure conduit, flushing the main pressure conduit with a source of pressurized fluid separate from that received from the collection stations to transport the sewage waste along the main pressure conduit and to prevent an accumulation of solid waste matter in the main pressure conduit.
Claim 6
Dependent Claim
100 words
The method of claim 6 including measuring the flow rate of sewage waste in said main pressure conduit, controlling the time interval of sewage waste discharge from each of a plurality of said waste collection stations into said main pressure conduit through said connective pressure conduits so as to not exceed a predetermined measurement of flow rate of sewage waste in said main pressure conduit, and introducing said pressurized flushing fluid into said main pressure conduit during periods of a predetermined low measurement of sewage waste in said main pressure conduit so as to substantially empty said main pressure conduit.
Claim 7
Dependent Claim
153 words
The method of claim 6 including measuring the flow rate of sewage waste in said main pressure conduit, controlling the timed interval of sewage waste discharge from each of a plurality of said waste collection stations into said main pressure conduit through said connective pressure conduits so as to not exceed a predetermined measurement of flow rate of sewage waste in said main pressure conduit, introducing compressed air below the fluid level of each of said waste collection points to entrain, oxidize and convey said waste material through said connective pressure conduits into said main pressure conduit, and introducing compressed air as the said flushing fluid into said main pressure conduit at intervals in time corresponding to specified high and low waste flow periods, as determined by the said measurement, in order to clean the said main pressure conduit of settled solid sewage material and to convey said sewage waste material downstream therein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |