E21C29/145 - CPC Classification Index

ClassID:

135834 ⎘

E21C29/145 - CPC Classification

Classification description:

Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face Means for tensioning the haulage chains or cables

Recent Application in this class:

20160083191

2016-03-24

Drive connection with integrated chain tensioning apparatus for face conveyors

20150308267

2015-10-29

EXCAVATING DEPOSITS FROM AN UNDERGROUND FORMATION LAYER

20150275664

2015-10-01

EXTRACTION INSTALLATION FOR MINERAL EXTRACTION

20110095595

2011-04-28

Chain guide for a driving chain of a mining machine