(19)

(11)

EP 0 464 052 A1

(12)

(43) Date of publication: 08.01.1992 Bulletin 1992/02 (21) Application number: 90904568.0 (22) Date of filing: 08.03.1990

(51) International Patent Classification (IPC):  A62C 35/ 68( . ) G01F 1/ 28( . ) A62C 37/ 50( . ) (86) International application number: PCT/US1990/001114 (87) International publication number: WO 1990/010856 (20.09.1990 Gazette 1990/22)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 08.03.1989 US 19890320713 08.03.1989 US 19890320716 27.09.1989 US 19890413292 03.10.1989 US 19890416111 (71) Applicant: AGF MANUFACTURING, INC. West Chester, PA 19380 (US)	(72) Inventor: McHUGH, George, J. Broomall, PA 19008 (US) (74) Representative: Parry, Christopher Stephen  PAGE, WHITE & FARRER 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)