US3823825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment filter bed for sewage systems
Assignee: Individual
•
Filing: 1973-06-15
•
Granted: 1974-07-16
•
Expires: 1993-06-15
Abstract
Abstract A trickle-type water treatment filter bed formed in the ground for receiving water of a sewage plant and which absorption bed has a drain wall around its sides and which functions to prevent saturation of the absorption bed. The drain wall means for the absorption bed finds particular utility in soils of poor permeability. The drain walls have tile means located at a depth lower than the tile means in the absorption bed and the drain walls function to prevent surface water from running into the absorption bed thereby contributing to its saturation, and also functions to drain off excessive water in the absorption bed so as to permit the absorption bed to function in a proper manner.
Inventors
- 👤 J Bergles
- 👤 M Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:38
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/002; C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A sewage water treatment filter bed arrangement comprising an absorption bed formed in the ground and filled with gravel, tile means extending in said gravel for conducting sewage water through said tile means for disposal in said gravel of said bed, a drain wall formed in the ground and spaced from said bed and being of a depth greater than said absorption bed, said drain wall being filled with gravel and having tile means located in said gravel and at a depth lower than the tile means in said absorption bed; said drain wall functioning to inhibit surface water from entering said absorption bed, lower the ground water table level, and also functions to drain excess water through the ground which separates said absorption bed from said drain wall and from said absorption bed; whereby excessive water is removed from said absorption bed and prevented from saturating said absorption bed.
Claim 2
Dependent Claim
150 words
A sewage water treatment filter bed arrangement comprising an absorption bed formed in the ground and filled with gravel, tile means extending in said gravel for conducting sewage water through said tile means for disposal in said gravel of said bed, a drain wall formed in the ground and spaced from said bed and being of a depth greater than said absorption bed, said drain wall being filled with gravel and having tile means located in said gravel and at a depth lower than the tile means in said absorption bed; said drain wall functioning to inhibit surface water from entering said absorption bed, lower the ground water table level, and also functions to drain excess water through the ground which separates said absorption bed from said drain wall and from said absorption bed; whereby excessive water is removed from said absorption bed and prevented from saturating said absorption bed.
Claim 3
Dependent Claim
53 words
The arrangement set forth in claim 1 further characterized in that said drain wall extends around at least three sides of said absorption bed, and said tile means in said drain wall on all three sides of said bed is located at a lower depth than the tile means in said absorption bed.
Claim 4
Dependent Claim
21 words
The arrangement set forth in claim 2 including an inspection manhole into which the tile means in said drain walls extends.
Claim 5
Dependent Claim
186 words
A sewage water filter bed arrangement comprising an elongated absorption bed formed in the ground and having gravel or the like therein, a series of drain tiles arranged end to end extending along the length of said bed and in said gravel for conducting sewage water through said tiles for disposal in said gravel of said bed for trickling therethrough, a drain wall formed in the ground and spaced from and along said bed to form a ground barrier between said absorption bed and said drain wall, said drain wall being of a depth greater than said absorption bed, said drain wall including gravel or the like therein and having a series of end to end tiles located in said gravel and at a depth lower than the tiles in said absorption bed; said drain wall functioning to inhibit surface water from flowing into said absorption bed and lowers the water table level, and also functions to drain excess sewage water through said ground barrier and from said absorption bed; whereby excessive water is removed from said absorption bed and prevented from saturating said absorption bed.
Claim 6
Dependent Claim
186 words
A sewage water filter bed arrangement comprising an elongated absorption bed formed in the ground and having gravel or the like therein, a series of drain tiles arranged end to end extending along the length of said bed and in said gravel for conducting sewage water through said tiles for disposal in said gravel of said bed for trickling therethrough, a drain wall formed in the ground and spaced from and along said bed to form a ground barrier between said absorption bed and said drain wall, said drain wall being of a depth greater than said absorption bed, said drain wall including gravel or the like therein and having a series of end to end tiles located in said gravel and at a depth lower than the tiles in said absorption bed; said drain wall functioning to inhibit surface water from flowing into said absorption bed and lowers the water table level, and also functions to drain excess sewage water through said ground barrier and from said absorption bed; whereby excessive water is removed from said absorption bed and prevented from saturating said absorption bed.
Claim 7
Dependent Claim
24 words
The arrangement set forth in claim 4 further characterized in that said drain wall extends around at least three sides of said absorption bed.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |