(19)

(11)

EP 0 980 498 A1

(12)

(43) Date of publication: 23.02.2000 Bulletin 2000/08 (21) Application number: 99911049.7 (22) Date of filing: 03.03.1999

(51) International Patent Classification (IPC)7: F24F 7/02, E04D 1/30, E04D 13/16 (86) International application number: PCT/US9904/578 (87) International publication number: WO 9945/327 (10.09.1999 Gazette 1999/36)

(84) Designated Contracting States: DE ES (30) Priority: 03.03.1998 US 34736 03.03.1998 US 34737 (71) Applicant: o'Hagin, Harry Sebastopol, CA 95472 (US)	(72) Inventor: o'Hagin, Harry Sebastopol, CA 95472 (US) (74) Representative: Wombwell, Francis et al Potts, Kerr & Co.15, Hamilton Square BirkenheadMerseyside L41 6BR BirkenheadMerseyside L41 6BR (GB)