(19)

(11)

EP 0 020 339 A1

(12)

(43) Date of publication: 07.01.1981 Bulletin 1981/01 (21) Application number: 79900350.0 (22) Date of filing: 29.11.1978

(51) International Patent Classification (IPC):  G01L 17/ 00( . ) B60C 23/ 04( . ) B60C 23/ 00( . ) G01L 7/ 16( . ) (86) International application number: PCT/US1978/000183 (87) International publication number: WO 1980/001152 (12.06.1980 Gazette 1980/13)

(84) Designated Contracting States: CH DE FR LU SE (71) Applicant: GELLOS, Alexander T. Flushing, NY 11354 (US)	(72) Inventor: GELLOS, Alexander T. Flushing, NY 11354 (US)