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(11)

EP 1 661 146 A1

(12)

(43) Date of publication: 31.05.2006 Bulletin 2006/22 (21) Application number: 03818369.5 (22) Date of filing: 28.08.2003

(51) International Patent Classification (IPC):  G21H 7/00(1968.09) F03G 7/10(1968.09) (86) International application number: PCT/BG2003/000032 (87) International publication number: WO 2005/022552 (10.03.2005 Gazette 2005/10)

(84) Designated Contracting States: (71) Applicant: PORVA, Anatoly 9023 Varna (BG)	(72) Inventor: PORVA, Anatoly 9023 Varna (BG) (74) Representative: Stoyanov, Todor Nikolov  7, Radko Dimitriev Street, 5th Floor, Office 3 9000 Varna 9000 Varna (BG)