EP 0305100 A1 19890301 - Security members and structures.
Title (en)
Security members and structures.
Title (de)
Sicherheitselemente und Gefüge.
Title (fr)
Eléments et structures de sécurité.
Publication
Application
Priority
- GB 8719600 A 19870819
- GB 8724637 A 19871021
Abstract (en)
A method of making a hollow section security member incorporating lengthwise extending runs of cutting resistant material comprises forming flat sheet material (10) with lengthwise extending grooves (12, 14, 16) and subsequently forming the grooved sheet into said hollow section and securing the cutting resistant material (36) in the grooves (12, 14, 16). The security members are preferably arranged with adjacent faces non-parallel. A preferred cross-sectional shape for the security members is triangular.
IPC 1-7
IPC 8 full level
B21C 37/15 (2006.01); E06B 9/01 (2006.01)
CPC (source: EP)
B21C 37/154 (2013.01); E06B 9/01 (2013.01)
Citation (search report)
- [Y] JP S48739 B1
- [Y] GB 2176526 A 19861231 - CHUBB SECURITY INSTALLATIONS
- [A] EP 0105514 A2 19840418 - BAUM ALBERT
- [A] US 3552938 A 19710105 - DRACA CEDO
- [A] US 3422525 A 19690121 - JEPPSSON ALLAN
Designated contracting state (EPC)
BE DE ES FR GB IT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 88307577 A 19880816