E21C27/12 - CPC Classification Index

ClassID:

135803 ⎘

E21C27/12 - CPC Classification

Classification description:

Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools

Sub-classes:

E21C27/122 » {with breaking-down members having a striking action} 1
E21C27/124 » {with rotatable cutters provided with breaking-down members} 4
E21C27/126 » {with slitting and breaking-down members situated in parallel on an intermediary level} 0
E21C27/128 » {with breaking-down members functioning on the slitting level} 3

Recent Application in this class:

20190210205

2019-07-11

Hydraulic hammering device

20150137580

2015-05-21

HIGH-EFFICIENCY MINING METHOD FOR PERCUSSING FALLING-MATERIALS WITHOUT TRAPPING MATERIALS AND HIGH-EFFICIENCY MINING MACHINE FOR PERCUSSING FALLING-MATERIALS WITHOUT TRAPPING MATERIALS