US3826376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Septic tank construction
Assignee: Carlson & Sons A
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Filing: 1973-08-20
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Granted: 1974-07-30
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Expires: 1993-08-20
Abstract
Abstract Septic tanks are described comprising a receptacle portion having an upstanding wall and a dome open at its top and supported on said wall. A removable slab covers the open end of the dome which is provided at opposite sides with baffled inlet and outlet means so constructed and arranged as to direct the sewage in an arcuate path from the inlet means to the outlet means while keeping turbulence to a minimum.
Inventors
- 👤 A Carlson
- 👤 J Pinezich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:24
CPC Classifications
E; E03; E03F; E03F11/00; B; B01; B01D; B01D21/00; B01D21/0003; B01D21/0039; B01D21/0042; B01D21/02; B01D21/24; B01D21/2405; B01D21/2444; C; C02; C02F; C02F3/00; C02F3/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A septic tank construction comprising a receptacle portion with an upstanding solid wall and a conical dome open at its top and supported on said wall, inlet means extending through the dome for the passage of sewage and having a baffle portion terminating above the receptacle portion and outlet means similar to the inlet means for receiving sewage at the end of its unobstructed arcuate flow path and directing it through said dome opposite said inlet means, and a removable slab on the dome opening, said inlet and outlet means each being a Y-shaped fitting having a hollow member extending along the inner surface of the dome and a tubular pipe section passing through the dome and intersecting the hollow member adjacent its upper end.
Claim 2
Dependent Claim
125 words
A septic tank construction comprising a receptacle portion with an upstanding solid wall and a conical dome open at its top and supported on said wall, inlet means extending through the dome for the passage of sewage and having a baffle portion terminating above the receptacle portion and outlet means similar to the inlet means for receiving sewage at the end of its unobstructed arcuate flow path and directing it through said dome opposite said inlet means, and a removable slab on the dome opening, said inlet and outlet means each being a Y-shaped fitting having a hollow member extending along the inner surface of the dome and a tubular pipe section passing through the dome and intersecting the hollow member adjacent its upper end.
Claim 3
Dependent Claim
49 words
A septic tank construction according to claim 1, wherein the hollow members extending along the inner surface of the dome are generally parallel thereto and are composed of fiberglass, the hollow member of the outlet means terminating at a level lower than the hollow member of the inlet means.
Claim 4
Dependent Claim
62 words
A septic tank construction according to claim 1, wherein the hollow members extending along the inner surface of the dome are semi-circular in cross-section with lateral flanges for attachment to the dome and an anti-splash flange at the upper end of each member dimensioned to leave an access opening to the interior of the member through the top opening of the dome.
Claim 5
Dependent Claim
43 words
A septic tank construction according to claim 1, wherein each of the inlet and outlet means has a semi-cylindrical fiberglass baffle secured to the inside surface of the conical dome and a hollow tubular member passing through the dome and intersecting the baffle.
Claim 6
Dependent Claim
49 words
A septic tank construction according to claim 4, wherein the inlet and outlet means are disposed diametrically opposite one another and wherein the baffles extend from a point above normal liquid level during use to a point at approximately the base of the dome just above said upstanding wall.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |