Title (en)

PROCESS AND APPARATUS FOR MAKING CORRUGATED PLATES FROM CONCRETE WITH AT LEAST ONE INCORPORATED NET, AND PLATE OBTAINED THEREBY

Publication

EP 0329619 A3 19910227 (FR)

Application

EP 89830041 A 19890206

Priority

IT 511888 A 19880216

Abstract (en)

[origin: EP0329619A2] The aim of the process and of the apparatus according to the invention is the making of corrugated plates from concrete with at least one incorporated net made of polypropylene to prevent the formation of creases on the inner side of the plane which is subject to compression during the bending phase. This result is obtained by creating in the plane and at appropriate intervals folds or ribs which level the creasing, are oriented transversely to the hollows of the plane and also constitute zones for reinforcement of the resulting product. <IMAGE>

IPC 1-7

B28B 11/00; B28B 23/02

IPC 8 full level

B28B 1/52 (2006.01); B28B 11/08 (2006.01); B28B 23/00 (2006.01)

CPC (source: EP)

B28B 1/528 (2013.01); B28B 11/0827 (2013.01); B28B 23/0006 (2013.01)

Citation (search report)

• [A] FR 2177512 A1 19731109 - SEEFF M [ZA]
• [A] US 2753918 A 19560710 - BRADFIELD PAUL D
• [A] DE 2451768 A1 19760506 - SIEMPELKAMP GMBH & CO
• [A] GB 1029548 A 19660511 - AMAGASAKI IRON & STEEL MFG CO
• [A] US 2526323 A 19501017 - BLASKI JOHN F

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0329619 A2 19890823; EP 0329619 A3 19910227; IT 1220456 B 19900615; IT 8805118 A0 19880216

DOCDB simple family (application)

EP 89830041 A 19890206; IT 511888 A 19880216