(19)

(11)

EP 0 028 218 A1

(12)

(43) Date of publication: 13.05.1981 Bulletin 1981/19 (21) Application number: 79901456.0 (22) Date of filing: 07.05.1979

(51) International Patent Classification (IPC):  A61F 2/ 958( . ) A61M 1/ 10( . ) (86) International application number: PCT/US1979/000309 (87) International publication number: WO 1980/002366 (13.11.1980 Gazette 1980/26)

(84) Designated Contracting States: DE FR GB SE (71) Applicants: KRAUSE, Horst E. Dayton, OH 45459 (US) STANLEY, Edwin L. Dayton, OH 45409 (US)	(72) Inventors: KRAUSE, Horst E. Dayton, OH 45459 (US) STANLEY, Edwin L. Dayton, OH 45409 (US) (74) Representative: Warren, Anthony Robert, et al  BARON & WARREN, 18 South End, Kensington London W8 5BU London W8 5BU (GB)