US3563383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification system for organically contaminated water
Assignee: Individual
•
Filing: 1969-04-03
•
Granted: 1971-02-16
•
Expires: 1989-04-03
Abstract
Abstract A purification system for organically contaminated water. The system comprises supporting areas that are active with respect to microorganisms and that are alternately immersed and withdrawn from the contaminated water while simultaneously being conveyed from an inlet to an outlet in a chamber containing said water.
Inventors
- 👤 Ake Hellquist
- 👤 Sigvard Nordgard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:00
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/082; C02F3/006; C02F3/10; C02F3/12; C02F3/1236; C02F3/1242; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
A purification system in accordance with claim 1, wherein the helix of said disc elements has a pitch decreasing from the first disc row at the inlet towards the last disc row at the outlet of the chamber.
Claim 2
Dependent Claim
84 words
A purification system in accordance with claim 2, wherein there exist at least two purifying assemblies and further comprising individual control means for supplying water independently to each purifying assembly whereby one control means supplies one purifying assembly with a constant quantity of water per time unit irrespective of the quantity of waste water fed into the purification system whereas the other control means increases the supply of water to the other purifying assembly when the waste water fed in exceeds a predetermined quantity.
Claim 3
Dependent Claim
29 words
A purification system in accordance with claim 3, wherein the other purifying assembly is dimensioned to purify a greater quantity of water per unit time than said first assembly.
Claim 4
Dependent Claim
129 words
A purification system in accordance with claim 3 wherein each control means comprises a float adapted to float on the surface of the water to be supplied to a purifying assembly and a stationary vertical guide means for guiding said float, a vertical stem depending from said float, a flexible tube connected at one end to said vertical stem and at the other end to said purifying assembly, said stem being provided with an inlet opening between the bottom of said float and said tube and a replaceable quantity adjusting pipe that is sealingly introduced into said stem, having a settling aperture at its lower end in register with said inlet opening for adjusting the quantity per unit time of water which may be introduced through said inlet opening.
References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |