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US4049554A Expired / Lapsed US ⏱️ 0.0 years remaining

Oil spill cleanup system

Assignee: Shell USA Inc
•
Filing: 1976-03-15
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Granted: 1977-09-20
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Expires: 1996-03-15
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Abstract

Abstract Skimmer for removing oil from the surface of a body of water which is articulated from front to rear to be wave conformable and/or has a quiescent collection zone formed by bottom and/or forward baffles. Flexible skimming head for use with or independently of the above skimmer composed of a foraminous sheet having an integral chevron flow pattern on its upper surface; floating skimming head for use similar to the preceeding head with a central, axially vertically movable cone or other configuration forming a suction mouth. Boom for use with or independently of the above skimmer which is composed of converging double booms. Storage capacity for oil collected by the above skimmer or otherwise composed of onboard and/or offboard membranes.

Inventors

  • 👤 Ray R. Ayers

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 14:35
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/048; B; B63; B63B; B63B35/00; B63B35/32; E02B15/10; E02B15/106; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 88 words
Apparatus for removing oil from the surface of a body of water comprising a skimming head of a single floating flexible non-absorbent perforated sheet which conforms with waves and is upturned at least at one end to permit the waves to pass thereunder and allows buoyant forces to percolate oil upward through the perforations in the sheet and flow unassisted along the upper surface of the sheet through flow directing floats to a collection region provided with means to withdraw oil from the upper surface of the sheet.
Claim 2
Dependent Claim 88 words
Apparatus for removing oil from the surface of a body of water comprising a skimming head of a single floating flexible non-absorbent perforated sheet which conforms with waves and is upturned at least at one end to permit the waves to pass thereunder and allows buoyant forces to percolate oil upward through the perforations in the sheet and flow unassisted along the upper surface of the sheet through flow directing floats to a collection region provided with means to withdraw oil from the upper surface of the sheet.
Claim 3
Dependent Claim 19 words
The apparatus of claim 1 wherein the perforations have a diameter of from about 1/2-inch to about 4 inches.
Claim 4
Dependent Claim 20 words
The apparatus of claim 1 wherein the perforations are located in the spaces formed by a chevron pattern of floats.
Claim 5
Dependent Claim 43 words
The apparatus of claim 3 wherein suction is provided at the forward end of the sheet, based on relative movement between the sheet and the body of water, and the chevron pattern is arranged to direct oil flowing unassisted toward the forward end.
Claim 6
Dependent Claim 14 words
The apparatus of claim 2 wherein the perforations are smaller closer to the suction.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

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