EP 0095795 B1 19850807 - MACHINE FOR DRIVING UNDERGROUND GALLERIES
Title (en)
MACHINE FOR DRIVING UNDERGROUND GALLERIES
Publication
Application
Priority
FR 8209835 A 19820602
Abstract (en)
[origin: US4508390A] The invention concerns an improved machine for making underground galleries. This machine comprises a shield consisting of two mutually movable parts, a forward knife casing 1 supporting on its inside a digging device 3 and a rear assembly skirt 2 acting as a guide means for a thrust ring 10. The knife casing and the assembly skirt are mutually connected by a slack fastening system allowing them to pivot with respect to each other in such a manner that their longitudinal axes form an adjustable angle. The machine of the invention applies to making underground galleries provided with coverings bracing the earth; it makes possible marked curves without the requirement of out-of-path earthworks.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
E21D 9/0621 (2013.01 - EP US); E21D 9/0875 (2016.01 - EP US); Y10T 403/7077 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0095795 A1 19831207; EP 0095795 B1 19850807; EP 0095795 B2 19910724; AT E14777 T1 19850815; DE 3360516 D1 19850912; FR 2528108 A1 19831209; FR 2528108 B1 19850308; US 4508390 A 19850402
DOCDB simple family (application)
EP 83200603 A 19830428; AT 83200603 T 19830428; DE 3360516 T 19830428; FR 8209835 A 19820602; US 50041383 A 19830601