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US3923656A Expired / Lapsed US ⏱️ 0.0 years remaining

Package aerobic waste treatment system

Assignee: BWP Inc A CORP OF OH
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Filing: 1973-12-17
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Granted: 1975-12-02
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Expires: 1993-12-17
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Abstract

Abstract A package sewage treatment system which operates on an aerobic treatment basis and is particularly adapted for use with residential dwellings. The system includes a main holding tank to which is attached a hemispherical domed cover which contains a perforated hanger plate and an inner, cylindrical surge chamber. An aeration pump mounted at the bottom of the main holding tank aspirates air throughout the system and provides the necessary conditions for aerobic bacterial life. Liquid leaving the system passes through a plurality of porous bags which are mounted on the hanger plate and extend down into the main holding tank. Each of the bags is provided with an internal support to resist collapsing of the bags during hydraulic pressure surges and an alarm system is provided to detect loss of air supply to the system, abnormal increases of solids level in the system and the necessity for cleaning the porous filter bags.

Inventors

  • 👤 J Robert Krebs
  • 👤 Thomas G Abele

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 13:07
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1242; C02F3/006; Y; Y02; Y02W; Y02W10/00; Y02W10/10

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 129 words
A WASTE TREATMENT SYSTEM COMPRISING: A. A HOLDING TANK ADAPTED TO RECEIVE PREDOMINANTLY LIQUID WASTE MATERIAL, B. A PLURALITY OF OPEN MOUTH POROUS BAGS SUSPENDED IN SAID HOLDING TANK AND ADAPTED TO BE SUBMERGED IN WASTE MATERIAL HELD THEREIN, C. MEANS DEFINING AN EFFLUENT CHAMBER SEPARATE FROM SAID HOLDING TANK AND IN COMBINATION WITH THE INTERIOR OF SAID OPEN MOUTH BAGS, D. INLET MEANS FOR DELIVERING WASTE MATERIAL INTO SAID HOLDING TANK, E. OUTLET MEANS FOR REMOVING EFFLUENT FROM SAID EFFLUENT CHAMBER, F. AERATING MEANS FOR DELIVERING OXYGEN TO SAID HOLDING TANK TO PROMOTE AEROBIC BACTERIAL ACTION IN SAID HOLDING TANK AND ON OUTER SURFACES OF SAID BAGS, AND G. MEANS DEFINING A WEIR IN SAID EFFLUENT CHAMBER INTERMEDIATE SAID OPEN MOUTHS OF SAID BAGS AND SAID OUTLET MEANS.
Claim 2
Dependent Claim 129 words
A WASTE TREATMENT SYSTEM COMPRISING: A. A HOLDING TANK ADAPTED TO RECEIVE PREDOMINANTLY LIQUID WASTE MATERIAL, B. A PLURALITY OF OPEN MOUTH POROUS BAGS SUSPENDED IN SAID HOLDING TANK AND ADAPTED TO BE SUBMERGED IN WASTE MATERIAL HELD THEREIN, C. MEANS DEFINING AN EFFLUENT CHAMBER SEPARATE FROM SAID HOLDING TANK AND IN COMBINATION WITH THE INTERIOR OF SAID OPEN MOUTH BAGS, D. INLET MEANS FOR DELIVERING WASTE MATERIAL INTO SAID HOLDING TANK, E. OUTLET MEANS FOR REMOVING EFFLUENT FROM SAID EFFLUENT CHAMBER, F. AERATING MEANS FOR DELIVERING OXYGEN TO SAID HOLDING TANK TO PROMOTE AEROBIC BACTERIAL ACTION IN SAID HOLDING TANK AND ON OUTER SURFACES OF SAID BAGS, AND G. MEANS DEFINING A WEIR IN SAID EFFLUENT CHAMBER INTERMEDIATE SAID OPEN MOUTHS OF SAID BAGS AND SAID OUTLET MEANS.
Claim 3
Dependent Claim 29 words
The system of claim 1 further comprising: a. gas collecting means in said holding tank, and b. means for venting gas collected in said collecting means from said system.
Claim 4
Dependent Claim 19 words
The system of claim 2 further comprising: a. duct means communicating with said collecting means and said venting means.
Claim 5
Dependent Claim 22 words
The system of claim 1 further comprising: a. a surge chamber positioned above said holding tank and partially defining said effluent chamber.
Claim 6
Dependent Claim 18 words
The system of claim 4 wherein: a. said surge chamber is in direct communication with said holding tank.
Claim 7
Dependent Claim 17 words
The system of claim 5 wherein: a. said inlet means is in communication with said surge chamber.
Claim 8
Dependent Claim 43 words
The system of claim 1 further comprising: a. a cover extending upwardly from said holding tank and partially defining said effluent chamber, b. vent means formed in said cover, and c. an air line extending from said air means through said vent means.
Claim 9
Dependent Claim 25 words
The system of claim 1 further comprising: a. means for detecting a discontinuance of delivery of oxygen by said aerating means to said holding tank.
Claim 10
Dependent Claim 80 words
The system of claim 1 wherein: a. said aerating means comprises an air intake line extending into said holding tank and means for drawing air through said intake line into said holding tank, b. a tube is provided in communication with said intake line adjacent lower ends of said line and said tube, c. a pressure switch is mounted on an upper end of said tube, and d. an alarm means is provided responsive to actuation of said pressure switch.
Claim 11
Dependent Claim 27 words
The system of claim 1 further comprising: a. means for detecting a rise in the level of the contents of said holding tank above a desired level.
Claim 12
Dependent Claim 51 words
The system of claim 1 further comprising: a. float mounted switch means adapted to float on the surface of the contents of said holding tank, and b. alarm means responsive to said float mounted switch means when the level of the contents of said holding tank rises above a desired level.
Claim 13
Dependent Claim 155 words
A waste treatment system comprising: a. a holding tank adapted to receive predominantly liquid waste material, b. a plurality of open mouth porous bags suspended in said holding tank and adapted to be submerged in waste material held therein, c. means defining an effluent chamber separate from said holding tank and in communication with the interior of said open mouth bags, d. inlet means for delivering waste material into said holding tank, e. outlet means for removing effluent from said effluent chamber, f. aerating means for delivering oxygen to said holding tank to promote aerobic bacterial action in said holding tank and on outer surfaces of said bags, g. a hanger plate extending across said holding tank and separating said holding tank and effluent chamber, h. said hanger plate sloping upwardly to form a weir intermediate open mouths of said bags and Said outlet means, and i. means suspending said bags from said hanger plate.
Claim 14
Dependent Claim 155 words
A waste treatment system comprising: a. a holding tank adapted to receive predominantly liquid waste material, b. a plurality of open mouth porous bags suspended in said holding tank and adapted to be submerged in waste material held therein, c. means defining an effluent chamber separate from said holding tank and in communication with the interior of said open mouth bags, d. inlet means for delivering waste material into said holding tank, e. outlet means for removing effluent from said effluent chamber, f. aerating means for delivering oxygen to said holding tank to promote aerobic bacterial action in said holding tank and on outer surfaces of said bags, g. a hanger plate extending across said holding tank and separating said holding tank and effluent chamber, h. said hanger plate sloping upwardly to form a weir intermediate open mouths of said bags and Said outlet means, and i. means suspending said bags from said hanger plate.
Claim 15
Dependent Claim 26 words
The system of claim 12 further comprising: a. gas collecting means defined by a portion of a lower surface of said hanger plate beneath said weir.
Claim 16
Dependent Claim 27 words
The system of claim 13 further comprising: a. a surge chamber extending upwardly above said hanger plate and communicating with said holding tank through said hanger plate.
Claim 17
Dependent Claim 20 words
The system of claim 14 further comprising: a. duct means communicating with said surge chamber and said gas collecting means.
Claim 18
Dependent Claim 155 words
A waste treatment system comprising: a. a holding tank adapted to receive predominantly liquid waste material, b. a plurality of open mouth porous bags suspended in said holding tank and adapted to be submerged in waste material held therein, c. means defining an effluent chamber separate from said holding tank and in communication with the interior of said open mouth bags, d. inlet means for delivering waste material into said holding tank, e. outlet means for removing effluent from said effluent chamber, f. aerating means for delivering oxygen to said holding tank to promote aerobic bacterial action in said holding tank and on outer surfaces of said bags, g. a hanger plate extending across said holding tank and separating said holding tank and effluent chamber, h. means suspending said bags from said hanger plate, and i. a surge chamber extending upwardly from said hanger plate and communicating with said holding tank through said hanger plate.
Claim 19
Dependent Claim 155 words
A waste treatment system comprising: a. a holding tank adapted to receive predominantly liquid waste material, b. a plurality of open mouth porous bags suspended in said holding tank and adapted to be submerged in waste material held therein, c. means defining an effluent chamber separate from said holding tank and in communication with the interior of said open mouth bags, d. inlet means for delivering waste material into said holding tank, e. outlet means for removing effluent from said effluent chamber, f. aerating means for delivering oxygen to said holding tank to promote aerobic bacterial action in said holding tank and on outer surfaces of said bags, g. a hanger plate extending across said holding tank and separating said holding tank and effluent chamber, h. means suspending said bags from said hanger plate, and i. a surge chamber extending upwardly from said hanger plate and communicating with said holding tank through said hanger plate.
Claim 20
Dependent Claim 25 words
The system of claim 16 wherein: a. said holding tank is substantially cylindrical in configuration, and b. said hanger plate is of substantially annular configuration.
Claim 21
Dependent Claim 15 words
The system of claim 16 wherein: a. said inlet means communicates with said surge chamber.
Claim 22
Dependent Claim 31 words
The system of claim 18 further comprising: a. gas collecting means extending annularly beneath said hanger plate, and b. radially disposed ducts interconnecting said gas collecting means and said surge chamber.
Claim 23
Dependent Claim 216 words
A waste treatment system comprising: a. a substantially cylindrical holding tank having an open upper end and a closed lower end, b. a hanger plate extending across said open upper end of said holding tank, c. a large diameter opening substantially centrally located in said hanger plate, d. a cylindrical surge chamber having open upper and lower ends, e. said surge chamber being mounted on said hanger plate with said open lower end thereof coincident with said large diameter opening in said hanger plate, f. said hanger plate sloping upwardly and outwardly radially thereof from said large diameter opening and defining an annular weir on an upper surface of said hanger plate adjacent but spaced inwardly from an outer periphery thereof, g. a lower surface of said hanger plate beneath said weir defining an annular collection ring, h. a plurality of return ducts formed in said hanger plate, extending radially inwardly from said collection ring to said surge chamber and placing said surge chamber and collection ring in communication with each other, i. a plurality of small diameter openings formed through said hanger plate intermediate said large diameter opening and said weir, j. a plurality of collars projecting upwardly from said hanger plate at said small diameter openings, k. a plurality of porous open mouth bags,
Claim 24
Dependent Claim 216 words
A waste treatment system comprising: a. a substantially cylindrical holding tank having an open upper end and a closed lower end, b. a hanger plate extending across said open upper end of said holding tank, c. a large diameter opening substantially centrally located in said hanger plate, d. a cylindrical surge chamber having open upper and lower ends, e. said surge chamber being mounted on said hanger plate with said open lower end thereof coincident with said large diameter opening in said hanger plate, f. said hanger plate sloping upwardly and outwardly radially thereof from said large diameter opening and defining an annular weir on an upper surface of said hanger plate adjacent but spaced inwardly from an outer periphery thereof, g. a lower surface of said hanger plate beneath said weir defining an annular collection ring, h. a plurality of return ducts formed in said hanger plate, extending radially inwardly from said collection ring to said surge chamber and placing said surge chamber and collection ring in communication with each other, i. a plurality of small diameter openings formed through said hanger plate intermediate said large diameter opening and said weir, j. a plurality of collars projecting upwardly from said hanger plate at said small diameter openings, k. a plurality of porous open mouth bags,

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-01 1979-06-02 1979-12-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-01 1983-06-02 1983-12-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-01 1987-06-02 1987-12-02 $7700.00 Window Closed / Lapsed

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