EP 0521413 B1 19940727 - Fixing of a shearing pick in its holder.
Title (en)
Fixing of a shearing pick in its holder.
Title (de)
Befestigung eines Schrämmeissels in seinem Halter.
Title (fr)
Fixation d'un pic de lavage dans son support.
Publication
Application
Priority
DE 4121674 A 19910629
Abstract (en)
[origin: EP0521413A1] During the fixing of a shearing pick (16) in its holder, the shearing pick (16) having a pick shank (15) and the holder having a pick pocket (8) which accommodates the pick shank (15) and is fixed to the work head (2) of a winning machine, with at least one holding element which holds the shearing pick (16) in the pick pocket (8), each holding element being designed as at least one working piston (13) which is arranged in the pick pocket (8), can be actuated by pressure and exerts on the shearing pick (16) a clamping force directed perpendicularly to its longitudinal axis (16c), short replacement times are made possible in a simple shape of the shearing pick (16) without a great deal of design effort and at the same time the reliable retention of the shearing pick (16) in the holder for the entire duration of its use is ensured by each working piston (13) being acted upon by pressure via a pressurised supply line (3) for spray liquid supplying at least one spray nozzle. <IMAGE>
IPC 1-7
IPC 8 full level
E21C 35/18 (2006.01); E21C 35/19 (2006.01)
CPC (source: EP)
E21C 35/186 (2020.05); E21C 35/188 (2020.05); E21C 35/19 (2013.01)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
EP 0521413 A1 19930107; EP 0521413 B1 19940727; AT E109247 T1 19940815; DE 4121674 C1 19930211; DE 59200320 D1 19940901; PL 295048 A1 19930308
DOCDB simple family (application)
EP 92110868 A 19920626; AT 92110868 T 19920626; DE 4121674 A 19910629; DE 59200320 T 19920626; PL 29504892 A 19920626