(19)

(11)

EP 0 727 975 A1

(12)

(43) Date of publication: 28.08.1996 Bulletin 1996/35 (21) Application number: 94901403.0 (22) Date of filing: 12.11.1993

(51) International Patent Classification (IPC):  A61F 13/ 42( . ) A61F 13/ 15( . ) (86) International application number: PCT/US1993/010890 (87) International publication number: WO 1994/010958 (26.05.1994 Gazette 1994/12)

(84) Designated Contracting States: AT BE DE GB NL (30) Priority: 13.11.1992 US 19920975838 23.07.1993 US 19930096552 (71) Applicant: MITCHELL, Winalee G. Perrysburg, OH 43551 (US)	(72) Inventors: MITCHELL, Winalee, G. Perrysburg, OH 43551 (US) SZYPKA, Andrew, J. Curtis, OH 43412 (US) PLOTKA, Michael Waterville, OH 43566 (US) (74) Representative: König, Werner, Dipl.-Ing., et al  Habsburgerallee 23-25 52064 Aachen 52064 Aachen (DE)