公开(公告)号：EP3341566A1

公开(公告)日：2018-07-04

申请号：EP16753675.4

申请日：2016-08-19

申请人： Element Six GmbH ,  Element Six (UK) Limited

发明人： SCHARTING, Markus Kilian ,  RIES, Bernd Heinrich ,  PICKLES, Charles Simon James ,  BONETTI, Serena ,  BUSH, Peter, Robert ,  FOLKERTS, James ,  HALLBERG, John ,  FREDERICK, John Ralph ,  TIRYAKI, Bulent ,  KRELLNER, James ,  ARNOLD, Randy ,  MEADE, David

IPC分类号： E21C35/18 ,  E21C35/183

CPC分类号： E21C35/183 ,  B28D1/186 ,  E21B10/46 ,  E21C35/18 ,  E21C35/19 ,  E21C2035/1803 ,  E21C2035/1813

摘要： A pick tool comprising a strike tip and a pick tool body, the pick tool body including a non-rotating strike tip at a first end of the pick tool body. A shaft is provided at a second end of the pick tool body, the shaft being configured to pass through an opening in a surface of a pick tool holder, the shaft being configured in use to be non-rotationally attached to the pick tool holder. The shaft projects from a pick tool abutment surface such that, when the pick tool is attached to the pick tool holder, the abutment surface abuts the pick tool holder surface. The abutment surface has an aspect ratio between its length and width of between 1.5:1 and 3:1. The pick tool body comprises a leading edge and a trailing edge, the leading edge being, in use, the edge that first contacts a formation, the trailing edge having an angle of less than 18° between a main axis of the pick tool and an axis from the strike tip to the abutment surface at the trailing edge.

公开(公告)号：EP3329096A1

公开(公告)日：2018-06-06

申请号：EP16833646.9

申请日：2016-07-29

申请人： Joy MM Delaware, Inc. ,  Element Six (UK) Limited ,  Element Six GmbH

发明人： ARNOLD, Randy ,  FOLKERTS, James, E. ,  FREDERICK, John, R. ,  HALLBERG, John ,  KRELLNER, James ,  MEADE, David ,  TIRYAKI, Bulent ,  BONETTI, Serena ,  BUSH, Peter, Robert ,  PICKLES, Charles, Simon, James ,  WORT, Christopher, John, Howard ,  RIES, Bernd, Heinrich ,  SCHARTING, Markus, Kilian

IPC分类号： E21C35/193 ,  B28D1/18 ,  E21C35/18 ,  E21C35/19 ,  E21C35/197

CPC分类号： E21C35/1933 ,  B28D1/18 ,  B28D1/188 ,  E21C27/24

摘要： A cutting bit assembly for a mining machine includes a holder having a first surface, a second surface, and a bore extending therebetween, and a bit having a first end and a second end. The bit further includes a tip, a shank, and a shoulder positioned between the tip and the shank. The shank is positioned in the bore of the holder and defines a shank axis. The shoulder engages the first surface of the holder. The shank includes a projection adjacent the second end. The cutting bit assembly also includes a retainer having a groove and a resilient member. The groove engages a portion of the projection. The resilient portion engages the second surface of the holder and biases the retainer along the shank axis and away from the holder.