US3568836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment unit
Assignee: Future Products Development Corp
•
Filing: 1969-03-28
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Granted: 1971-03-09
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Expires: 1989-03-28
Abstract
Abstract A unit for collecting floating solids from sewage ponds comprising a frame with a vertically slideable float and collection bin therein and a guide means, all positioned above a sewage inlet to trap solids in the collection bin. The added buoyancy raises the float out of the water when the bin is filled.
Inventors
- 👤 Bartow Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:28
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
25 words
The unit of claim 1 wherein the coLlector means is provided with slideable brackets secured to vertical posts in the frame to effect vertical movement.
Claim 2
Dependent Claim
17 words
The unit of claim 1 wherein the float is a tubular element positioned above the collector means.
Claim 3
Dependent Claim
25 words
The unit of claim 3 wherein the float is provided with indicator means which rises above the liquid level when the collector means if filled.
Claim 4
Dependent Claim
11 words
The unit of claim 1 wherein the collector means is vented.
Claim 5
Dependent Claim
11 words
The unit of claim 1 wherein the guide means is vented.
Claim 6
Dependent Claim
19 words
The unit of claim 1 wherein the collector means is provided with circular hatch doors on its upper surface.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |