(19)

(11)

EP 1 280 726 A1

(12)

(43) Date of publication: 05.02.2003 Bulletin 2003/06 (21) Application number: 01928348.0 (22) Date of filing: 04.04.2001

(51) International Patent Classification (IPC)7: B66D 1/50 (86) International application number: PCT/US0110/701 (87) International publication number: WO 0107/7000 (18.10.2001 Gazette 2001/42)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 05.04.2000 US 194822 P (71) Applicant: Cooper Cameron Corporation Houston, Texas 77027-9109 (US)	(72) Inventor: JORDAN, Larry, Russell Tomball, TX 77375 (US) (74) Representative: Brunner, Michael John  GILL JENNINGS & EVERY,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)