(19)

(11)

EP 0 859 931 A1

(12)

(43) Date of publication: 26.08.1998 Bulletin 1998/35 (21) Application number: 96938889.0 (22) Date of filing: 29.11.1996

(51) International Patent Classification (IPC):  G01M 3/ 38( . ) G01V 9/ 00( . ) (86) International application number: PCT/CA1996/000787 (87) International publication number: WO 1997/020167 (05.06.1997 Gazette 1997/24)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 29.11.1995 CA 19952164029 29.11.1996 US 19960770365 (71) Applicant: Rekunyk, Horace Calgary, Alberta T2P 2G4 (CA)	(72) Inventor: Rekunyk, Horace Calgary, Alberta T2P 2G4 (CA) (74) Representative: Gilding, Martin John, et al  Eric Potter Clarkson, Park View House, 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)