E21D23/14 - CPC Classification Index

ClassID:

136235 ⎘

E21D23/14 - CPC Classification

Classification description:

Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor; Control, e.g. using remote control Effecting automatic sequential movement of supports, e.g. one behind the other

Sub-classes:

E21D2023/142 » {Measuring the advance of support units with respect to external points of reference} 0
E21D2023/144 » {Measuring the advance of support units with respect to internal points of reference, e.g. with respect to neighbouring support units or extension of a cylinder} 0
E21D2023/146 » {Transmission of signals and commands by cable} 0
E21D2023/148 » {Wireless transmission of signals and commands} 1

Recent Application in this class:

20240401480

DIGITAL SPEED REGULATING VALVE FOR ALIGNING HYDRAULIC SUPPORTS IN FULLY MECHANIZED MINING FACE AND CONTROL METHOD THEREOF

20200190982

Automated support of a gate entry for underground full extraction mining

20170275993

Longwall system face alignment detection and steering

20160362980

Systems and methods for monitoring longwall mine roof stability

20110102298

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