(19)

(11)

EP 0 214 234 A1

(12)

(43) Date of publication: 18.03.1987 Bulletin 1987/12 (21) Application number: 86901667.0 (22) Date of filing: 19.02.1986

(51) International Patent Classification (IPC):  E04B 2/ 02( . ) B28B 7/ 00( . ) B28B 7/ 28( . ) B28B 3/ 02( . ) B28B 7/ 18( . ) E04B 2/ 26( . ) (86) International application number: PCT/US1986/000359 (87) International publication number: WO 1986/004947 (28.08.1986 Gazette 1986/19)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL (30) Priority: 21.02.1985 MX 20010002044 (71) Applicant: HUNT, Terance J. Richardson, TX 75080 (US)	(72) Inventor: HUNT, Terance J. Richardson, TX 75080 (US) (74) Representative: Baillie, Iain Cameron  c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)