US3563380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing floating contaminants from streams
Assignee: FRANK B THOMAS
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Filing: 1969-12-04
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Granted: 1971-02-16
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Expires: 1989-12-04
Abstract
Abstract A method of removing oil, grease and other floating contaminants from a stream and it includes floating a barricade, which extends above the surface of the water, in a stream, and positioning this barricade at an acute angle to the direction of flow of the stream. The contaminants collect on the upstream face of the barricade and periodically are removed from the surface of the stream, and adjustable barricade means are present in the apparatus.
Inventors
- 👤 Frank B Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:57
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A method as in claim 1 and including the steps of: securing said barricade in position to enable it to rise and fall with variations in the level of the water; and collecting the contaminants along an adjustably positioned member on the upstream margin of said barricade.
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) | 1974-02-15 | 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 |