(19)

(11)

EP 1 166 027 A1

(12)

(43) Date of publication: 02.01.2002 Bulletin 2002/01 (21) Application number: 00914193.8 (22) Date of filing: 17.03.2000

(51) International Patent Classification (IPC)7: F41A 21/30 (86) International application number: PCT/FI0000/215 (87) International publication number: WO 0057/122 (28.09.2000 Gazette 2000/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 19.03.1999 FI 990621 11.05.1999 FI 990217 U (71) Applicant: Silvennoinen, Martti 41120 Puuppola (FI)	(72) Inventor: Silvennoinen, Martti 41120 Puuppola (FI) (74) Representative: Helke, Kimmo Kalervo  Kespat Oy, P.O. Box 601 40101 Jyväskylä 40101 Jyväskylä (FI)