(19)

(11)

EP 0 036 875 A1

(12)

(43) Date of publication: 07.10.1981 Bulletin 1981/40 (21) Application number: 80901913.0 (22) Date of filing: 25.08.1980

(51) International Patent Classification (IPC):  B64C 1/ 12( . ) H01Q 1/ 42( . ) B64D 15/ 16( . ) (86) International application number: PCT/US1980/001095 (87) International publication number: WO 1981/000993 (16.04.1981 Gazette 1981/09)

(84) Designated Contracting States: DE FR GB NL SE (30) Priority: 03.10.1979 US 19790081597 (71) Applicant: The B.F. GOODRICH Company Akron, Ohio 44318 (US)	(72) Inventors: BLASER, Ted Wayne Cuyahoga Falls, OH44223 (US) WEISEND, Norbert Adrian, Jr. Cuyahoga Falls, OH44223 (US) (74) Representative: von Kreisler, Alek, Dipl.-Chem., et al  Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41 D-50462 Köln D-50462 Köln (DE)