(19)

(11)

EP 1 635 983 A2

(12)

(88) Date of publication A3: 03.03.2005 (43) Date of publication: 22.03.2006 Bulletin 2006/12 (21) Application number: 04760918.5 (22) Date of filing: 07.05.2004

(51) International Patent Classification (IPC):  B23P 11/00(1968.09) (86) International application number: PCT/US2004/014278 (87) International publication number: WO 2004/101187 (25.11.2004 Gazette 2004/48)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 08.05.2003 US 469029 P 14.01.2004 US 757967 (71) Applicant: Prototube, Inc. Sterling Heights, MI 48314 (US)	(72) Inventor: CRIPSEY, Timothy, J. Rochester, MI 48306 (US) (74) Representative: Skagersten, Thomas et al Awapatent AB, Box 45086 104 30 Stockholm 104 30 Stockholm (SE)