EP 0142685 B1 19890215 - JAWS OR SHELLS FOR A HYDRAULICALLY DRIVEN MECHANICAL ROCK-SPLITTING APPARATUS
Title (en)
JAWS OR SHELLS FOR A HYDRAULICALLY DRIVEN MECHANICAL ROCK-SPLITTING APPARATUS
Publication
Application
Priority
DE 3338368 A 19831021
Abstract (en)
[origin: EP0142685A2] 1. Pressure jaws or shells for a device for the mechanical splitting of rock, having a cylinder (1), in which a hydraulically actuatable piston having a piston rod (3) is arranged so as to be longitudinally movable, by means of which piston rod a sliding wedge (18) arranged between the pressure jaws (17) can be displaced, the pressure jaws (17), which can be inserted into boreholes, being supported in the cylinder block or in a cylinder lower part (2), which is arranged releasably on the latter, so as to be exchangeable and movable laterally to a limited extend and at the respective sides facing the sliding wedge (18), having an obliquity which corresponds to the inclination of the sliding wedge (18), characterized in that the pressure jaws (17) are of approximately spade-or hammer-shaped design.
IPC 1-7
IPC 8 full level
E21C 37/02 (2006.01); E21C 37/04 (2006.01)
CPC (source: EP)
E21C 37/04 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0142685 A2 19850529; EP 0142685 A3 19861120; EP 0142685 B1 19890215; AT E40845 T1 19890315; DE 3338368 A1 19850502; DE 3338368 C2 19851031; DE 3476776 D1 19890323
DOCDB simple family (application)
EP 84111848 A 19841003; AT 84111848 T 19841003; DE 3338368 A 19831021; DE 3476776 T 19841003