E21D15/14 - CPC Classification Index

ClassID:

136086 ⎘

E21D15/14 - CPC Classification

Classification description:

Props ; Chocks, e.g. made of flexible containers filled with backfilling material Telescopic props

Sub-classes:

E21D15/15 » Means counteracting entry of dirt; Built-in cleaning devices 1
E21D15/16 » with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure 1
E21D15/28 » with parts held relatively to each other by friction or gripping 1
E21D15/44 » Hydraulic, pneumatic, or hydraulic-pneumatic props 23
E21D15/46 » with load-measuring devices; with alarm devices 4

Recent Application in this class:

20240167383

2024-05-23

Telescopic device and telescopic annular tunnel steel arch

20200325776

2020-10-15

Mine roof support, pre-installation assembly for same, and method of installation

20170130580

2017-05-11

TELESCOPIC MINE ROOF SUPPORT

20160208609

2016-07-21

Support for use in mine

20160146007

2016-05-26

SYSTEM FOR MOUNTING CROSSBAR OF TEMPORARY ROOF SUPPORT SYSTEM

20160102552

2016-04-14

TEMPORARY ROOF SUPPORT SYSTEM WITH ANTI-ROTATION FEATURE

20150267536

2015-09-24

Telescopic mine roof support

20150184512

2015-07-02

TELESCOPIC MINE ROOF SUPPORT

20150147122

2015-05-28

Yieldable prop with yieldable insert

#10

20150086280

2015-03-26

ROOF SUPPORT SHEET HANDLING FOR UNDERGROUND MINES

#11

20150086272

2015-03-26

Self-moving tunnel support canopy

#12

20140064859

2014-03-06

Telescopic mine roof support

#13

20130126695

2013-05-23

Telescopic safety device

#14

20120213598

2012-08-23

Roof support sheet handling for underground mines

#15

20110052334

2011-03-03

Apparatus and method for supporting a mine rib