3. 1973 

 3,708,070 to 3,781,778 



JANUARY 2, 1973 



3,708,070 

 OIL SKIMMER 

 Edwin A. Bell, Lake Charles, La., assignor to Cities Service 

 Oil Co. 



FUed Ort. 2, 1970, Ser. No. 77,596 



Int. CI. C02b 9102 



U.S. CI. 210— 242 6 Claims 



In order to recover surface oil from a body of water a float- 

 ing oil skimmer barge is provided with a series of compart- 

 ments, beginning at the prow of the barge, inflow to each com- 

 partment being effected over a respective floating baffle 

 pivotally mounted at its bottom edge to swing into its compart- 

 ment to a depth determined by the pressure differential across 

 the baffle. Position of the baffle is controlled by pumping 

 water at controlled rates from the bottom of the downstream 

 end of each compartment to thereby cause an effective sur- 

 face flow between compartments Surface oil builds up in 

 depth at the downstream end of the last compartment and is 

 collected, substantially free of water, in a recovery chamber 

 which is also provided with a floating baffle and from which oil 

 is pumped at controllable rates. 



Keywords: Pollutant collection; Pollutant 

 removal watercraft; Pollutant, 

 suction removal 



U.S. CI. X.R. 210-DIG.21 



IT -n '16 61 n ^ 



JANUARY 9, 1973 



3,708,982 



SYSTEM AND BARRIER FOR CONTAINING AN OIL 



SPILL 



Thomas Nicholas Blockwick. McLean, Va^ assignor to Ocean 



Systems, Inc., New York, N.Y. 



FUed Oct. 21, 1970, Ser. No. 79,997 



Int. CI. E02b 15104 



U.S.CI.61-1F 23 Claims 



A system for containing an oil spill comprising a plurality of 

 barrier modules each composed of a composite structiire hav- 

 ing a buoyant upper section and a water absorbing lower sec- 

 tion which represents concurrently the sole ballast for said 

 upper section and the subsurface barrier for the module. 



Keywords: Pollutant, surface barrier 

 U.S. CI. X.R. 61-5; 114-.5F 

 See: Re. 28,966 



Figure 6. Additional examples of annotations for original patents, 



33 



