EP 0583227 A1 19940216 - Apparatus for assembling reinforcement or supporting ribs in a tunnel being built.
Title (en)
Apparatus for assembling reinforcement or supporting ribs in a tunnel being built.
Title (de)
Gerät zum Einbau von Verstärkungs- oder Stützstreben in Tunnelvortrieben.
Title (fr)
Appareil pour l'assemblage des étresillons de renforcement ou de support dans le creusement de tunnels.
Publication
Application
Priority
IT MI921977 A 19920811
Abstract (en)
A fork apparatus (1) for assembling reinforcing or supporting ribs in a tunnel consists of a box-like supporting construction with two short abutment teeth (2) on the sides and four abutment teeth (3) in the central part. On the sides, two pistons (4) are arranged for clamping the ribs to the apparatus. In the central part, a base member (12), driven by a small piston (13), operates as an abutment for the rib crown. The apparatus is connected to the arm of a vehicle by means of an adjustable hinge (17,20,21,22) and a ball joint (16,19). <IMAGE>
IPC 1-7
IPC 8 full level
E21D 11/40 (2006.01)
CPC (source: EP)
E21D 11/40 (2013.01)
Citation (search report)
- [X] DE 2136783 B
- [A] GB 2067624 A 19810730 - PERARD ENG LTD
- [A] GB 2071180 A 19810916 - HARDING J D
Designated contracting state (EPC)
AT CH DE FR LI
DOCDB simple family (publication)
EP 0583227 A1 19940216; IT 1256037 B 19951121; IT MI921977 A0 19920811; IT MI921977 A1 19940211
DOCDB simple family (application)
EP 93830332 A 19930728; IT MI921977 A 19920811