US2628190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating sewage or other waste materal
Assignee: Link Belt Co
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Filing: 1949-08-31
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Granted: 1953-02-10
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Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/10; B01D21/12; B01D21/24; B01D21/2433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF SUBJECTING RAW UNTREATED SEWAGE TO PRIMARY TREATMENT IN A SINGLE HORIZONTALLY ELONGATED TREATING UNIT WHICH INCLUDES THE STEPS OF FEEDING THE RAW UNTREATED SEWAGE MATERIAL DIRECTLY INTO THE INLET END OF AN ELONGATED AERATION ZONE, DISCHARGING DIFFUSED AIR INTO THE MATERIAL SO FED AND BEFORE IT IS PASSED BEYOND SAID AERATION ZONE TO EFFECT AERATION OF SUCH A CHARACTER AS TO FEED FLOATABLE SUBSTANCES FROM THE SUSPENDED SOLIDS CONTAINED THEREIN, DIRECTLY DISCHARGING FROM THE TREATING UNIT AT THE OUTLET END OF THE AERATION ZONE THE FLOATABLE SUBSTANCES THAT RISE TO THE TOP OF SAID ZONE, PASSING THE MATERIAL DIRECTLY AFTER AERATION THEREOF FROM THE OUTLET END OF THE AERATION ZONE INTO THE BOTTOM PORTION ONLY OF THE INLET END OF AN ELONGATED ZONE OF QUISESCENT SETTLING WHICH IS SUFFICIENTLY ISOLATED FROM THE AERATION ZONE AS TO BE UNAFFECTED BY THE AGITATION CREATED IN THE LATTER ZONE WHEREBY THE REMAINING FLOATABLE SUBSTANCES WILL RISE TO THE TOP OF THE QUIESCENT SETTLING ZONE AND SETTLEABLE
Claim 2
Independent Claim
166 words
THE METHOD OF SUBJECTING RAW UNTREATED SEWAGE TO PRIMARY TREATMENT IN A SINGLE HORIZONTALLY ELONGATED TREATING UNIT WHICH INCLUDES THE STEPS OF FEEDING THE RAW UNTREATED SEWAGE MATERIAL DIRECTLY INTO THE INLET END OF AN ELONGATED AERATION ZONE, DISCHARGING DIFFUSED AIR INTO THE MATERIAL SO FED AND BEFORE IT IS PASSED BEYOND SAID AERATION ZONE TO EFFECT AERATION OF SUCH A CHARACTER AS TO FEED FLOATABLE SUBSTANCES FROM THE SUSPENDED SOLIDS CONTAINED THEREIN, DIRECTLY DISCHARGING FROM THE TREATING UNIT AT THE OUTLET END OF THE AERATION ZONE THE FLOATABLE SUBSTANCES THAT RISE TO THE TOP OF SAID ZONE, PASSING THE MATERIAL DIRECTLY AFTER AERATION THEREOF FROM THE OUTLET END OF THE AERATION ZONE INTO THE BOTTOM PORTION ONLY OF THE INLET END OF AN ELONGATED ZONE OF QUISESCENT SETTLING WHICH IS SUFFICIENTLY ISOLATED FROM THE AERATION ZONE AS TO BE UNAFFECTED BY THE AGITATION CREATED IN THE LATTER ZONE WHEREBY THE REMAINING FLOATABLE SUBSTANCES WILL RISE TO THE TOP OF THE QUIESCENT SETTLING ZONE AND SETTLEABLE
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |