(19)

(11)

EP 1 827 969 A1

(12)

(43) Date of publication: 05.09.2007 Bulletin 2007/36 (21) Application number: 05823186.1 (22) Date of filing: 07.12.2005

(51) International Patent Classification (IPC):  B63H 25/46(2006.01) G05G 9/047(2006.01) (86) International application number: PCT/NZ2005/000319 (87) International publication number: WO 2006/062416 (15.06.2006 Gazette 2006/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 07.12.2004 US 633810 P 11.11.2005 US 735444 P (71) Applicant: CWF Hamilton&Co Limited Christchurch 8002 (NZ)	(72) Inventors: ASHBY, Andrew, John Christchurch, 8001 (NZ) BORRETT, John, Robert Christchurch, 8002 (NZ) (74) Representative: Crawford, Andrew Birkby et al A.A. Thornton & Co., 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)