Patent US3850807A successfully refreshed from Google Patents.
US3850807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for removing floating oil from water
Assignee: BP America Production Co
•
Filing: 1971-10-15
•
Granted: 1974-11-26
•
Expires: 1991-10-15
Abstract
Abstract This invention relates to water pollution control and especially concerns a system for removing dispersed oil from a flowing inland stream. A bed of granular sulfur is provided within a unique container buoyantly supported by the stream. In most oily streams the oil, due to gravity, accumulates on the surface in a very thin film, sometimes referred to as an oil slick or sheen. This top portion of the stream is directed through the bed of granular sulfur where the oil is coalesced and removed, leaving clean water flowing from the container.
Inventors
- 👤 L Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:49
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/106; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923; Y10S524/00; Y10S524/917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
An apparatus for removing floating oil from a flowing inland stream of oily water which comprises: a coalescing bed of elemental sulfur supported in said stream; means to divert at least the upper portion of said stream through said coalescing bed to cause the oil to coalesce; means to remove said coalesced oil.
Claim 2
Independent Claim
53 words
An apparatus for removing floating oil from a flowing inland stream of oily water which comprises: a coalescing bed of elemental sulfur supported in said stream; means to divert at least the upper portion of said stream through said coalescing bed to cause the oil to coalesce; means to remove said coalesced oil.
Claim 3
Dependent Claim
55 words
An apparatus as defined in claim 1 including a plate means for supporting said sulfur coalescing bed, said plate means being supported in an upwardly sloping direction with respect to the flow of said stream, said plate means including alternating perforated areas and protected unperforated areas forming oil collecting channels running longitudinally with said stream.
Claim 4
Dependent Claim
26 words
An apparatus as defined in claim 2 in which the means to remove said coalesced oil includes a pump with its intake connected to said channels.
Claim 5
Dependent Claim
35 words
An apparatus as defined in claim 2 including vertical upstream, downstream and side walls extending downwardly from the periphery of said plate means and being open at the lower end to form a quiet zone.
Claim 6
Dependent Claim
27 words
An apparatus as defined in claim 4 in which the lower end of said downstream vertical wall terminates at a higher elevation than the upstream vertical wall.
Claim 7
Dependent Claim
63 words
An apparatus as defined in claim 4 including a container for supporting said sulfur bed having a throat and also including means for diverting the upper portion of the stream into said throat which includes skirt means extending from each side of said throat to the side of said stream and including means to support said skirt at the surface of said stream.
References Cited (Backward Citations)
GB190003036A
Cited
US1812629A
Cited
US2102796A
Cited
US2385527A
Cited
US3563380A
Cited
US3567660A
Cited
US3779382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |