(19)

(11)

EP 0 192 756 A1

(12)

(43) Date of publication: 03.09.1986 Bulletin 1986/36 (21) Application number: 85904655.0 (22) Date of filing: 12.09.1985

(51) International Patent Classification (IPC):  E04H 12/ 22( . ) (86) International application number: PCT/GB1985/000420 (87) International publication number: WO 1986/001849 (27.03.1986 Gazette 1986/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 12.09.1984 GB 19840023056 22.01.1985 GB 19850001510 (71) Applicant: SMART, Peter William Great Hollands Bracknell RG12 4UT (GB)	(72) Inventor: SMART, Peter William Great Hollands Bracknell RG12 4UT (GB) (74) Representative: Smith, Martin Stanley  Stevens, Hewlett & Perkins 1 St. Augustine's Place Bristol BS1 4UD Bristol BS1 4UD (GB)