Patent US4997562A successfully refreshed from Google Patents.
US4997562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-chambered septic tank with elongated partition crossover conduits
Assignee: Individual
•
Filing: 1989-03-06
•
Granted: 1991-03-05
•
Expires: 2009-03-06
Abstract
Abstract Five relatively spaced apart, internal partitions separate the subject septic tank into four consecutive settling chambers, a filtration chamber and an outlet chamber. Each of the four partitions separating the settling and filtration chambers is provided with a conduit having a connective section mounted in an upper portion of the partition at least two-thirds of the distance from the bottom to the top of the septic tank and with a leg section extending downwardly from the connective section. Each leg section has a lower opening communicating with a lower portion of one of the chambers at least two-thirds of the distance from the top to the bottom to the septic tank.
Inventors
- 👤 Lloyd S. Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:23
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; C02F3/2866; C02F3/288; B; B01; B01D; B01D21/00; B01D21/0012; C02F3/02; C02F3/10; E; E03; E03F; E03F11/00; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
In a septic tank equipped with at least two chambers disposed in upstream or downstream relation to one another, adjacent chambers being separated by a partition extending generally vertically and completely between relatively spaced apart upper and lower chamber-defining members, that improvement which comprises: a self-contained conduit formed with a transverse section extending through an upper portion of the partition at least two-thirds of the distance from the lower chamber-defining member to the upper chamber-defining member, said transverse section communicating with an outlet opening in the downstream chamber, and with a leg section extending downwardly from the transverse section, said leg having an inlet opening disposed in the upstream chamber at least two-thirds of the distance from the upper to the lower chamber-defining member wherein said inlet opening and said partition are constructed and arranged to provide a means for halting an inflow of wastewater into said septic tank when a level of sludge in said upstream chamber blocks said inlet opening.
Claim 2
Dependent Claim
162 words
In a septic tank equipped with at least two chambers disposed in upstream or downstream relation to one another, adjacent chambers being separated by a partition extending generally vertically and completely between relatively spaced apart upper and lower chamber-defining members, that improvement which comprises: a self-contained conduit formed with a transverse section extending through an upper portion of the partition at least two-thirds of the distance from the lower chamber-defining member to the upper chamber-defining member, said transverse section communicating with an outlet opening in the downstream chamber, and with a leg section extending downwardly from the transverse section, said leg having an inlet opening disposed in the upstream chamber at least two-thirds of the distance from the upper to the lower chamber-defining member wherein said inlet opening and said partition are constructed and arranged to provide a means for halting an inflow of wastewater into said septic tank when a level of sludge in said upstream chamber blocks said inlet opening.
Claim 3
Dependent Claim
28 words
The septic tank according to claim 1, wherein four relatively spaced apart generally identical partitions are provided, each of said partitions being provided with one of the conduits.
Claim 4
Dependent Claim
38 words
The septic tank according to claim 2, wherein first, second, third and fourth settling chambers and a filtration chamber are separated, respectively, by said four partitions, all of said settling and filtration chambers being generally equal in depth.
Claim 5
Dependent Claim
29 words
A septic tank according the claim 3, wherein a fifth partition is provided in spaced relation to the fourth partition to separate the filtering chamber from an outlet chamber.
Claim 6
Dependent Claim
33 words
A septic tank according to claim 4, wherein a passageway is provided in the fifth partition adjacent to the lower chamber-defining member for fluid communication between the filtration chamber and the outlet chamber.
Claim 7
Dependent Claim
22 words
A septic tank according to claim 4, wherein said filtering chamber is filled in substantial part with a fibrous organic filtering medium.
Claim 8
Dependent Claim
23 words
A septic tank according to claim 4, wherein said filtering chamber is larger than each of the second, third and fourth settling chambers.
Claim 9
Dependent Claim
27 words
A septic tank according to claim 4, wherein the outlet chamber is provided with means for pumping an effluent which collects therein out of the septic tank.
Claim 10
Dependent Claim
23 words
A septic tank according to claim 4, wherein the upper chamber-defining member is formed with at least one access opening for each chamber.
Claim 11
Dependent Claim
24 words
A septic tank according to claim 9, wherein an open-ended riser is vertically aligned with and projects upwardly from each of said access openings.
Claim 12
Dependent Claim
27 words
A septic tank according to claim 9, wherein a portion of the connective section of each conduit is generally vertically aligned with one of the access openings.
References Cited (Backward Citations)
US592721A
Cited
US357349A
Cited
CH26986A
Cited
US745754A
Cited
GB190411900A
Cited
US791647A
Cited
US875984A
Cited
US874542A
Cited
AT39560B
Cited
US1160918A
Cited
US1179327A
Cited
US1456312A
Cited
US1454723A
Cited
US1582915A
Cited
US1708118A
Cited
US3109813A
Cited
US3261779A
Cited
US3228531A
Cited
US3325016A
Cited
US3428551A
Cited
US3805957A
Cited
US3883427A
Cited
US3904524A
Cited
US4073722A
Cited
US3945918A
Cited
US4238333A
Cited
US4230422A
Cited
US4325823A
Cited
US4481114A
Cited
US4505813A
Cited
EP0240412A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |