(19)
(11) EP 1 212 130 A1

(12)

(43) Date of publication:
12.06.2002 Bulletin 2002/24

(21) Application number: 00962688.8

(22) Date of filing: 18.09.2000
(51) International Patent Classification (IPC)7B01D 33/03, B07B 1/46
(86) International application number:
PCT/GB0003/571
(87) International publication number:
WO 0119/492 (22.03.2001 Gazette 2001/12)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 16.09.1999 US 397242
05.08.2000 US 634610

(71) Applicant: Varco I/P, Inc.
Houston, TX 77051 (US)

(72) Inventors:
  • SEYFFERT, Kenneth, Wayne
    Houston, TX 77018 (US)
  • Adams, Thomas Cole
    Hockley, TX 77447 (US)
  • Largent, David Wayne
    Cleveland, TX 77327 (US)
  • SCHULTE, David, Lee
    Broussard, LA 70518 (US)
  • GRICHAR, Charles, Newton
    Houston, TX 77009 (US)
  • WALKER, Jeffery, Earl
    Lafayette, LA 70501 (US)
  • MURRAY, Hector, M.
    Willis, TX 77378 (US)
  • MCCLUNG, Guy, Lamont, III
    Spring, TX 77379 (US)
  • MARONEY, James, Fancis, III
    Houston, TX 77079 (US)
  • WINKLER, Joseph, Charles
    Houston, TX 77024 (US)

(74) Representative: Lucas, Brian Ronald 
Lucas & Co.135 Westhall Road
WarlinghamSurrey CR6 9HJ
WarlinghamSurrey CR6 9HJ (GB)

   


(54) A SCREEN FOR USE IN A SHALE SHAKER AND METHOD FOR USING SAME