Patents-Review.com
ClassID:

135143 ⎘

E21B6/02 - CPC Classification

Classification description:

Drives for drilling with combined rotary and percussive action the rotation being continuous

Sub-classes:
Recent Application in this class:
#1
20230392445
2023-12-07

AUGERS

 #2
20230175320
2023-06-08

DOWNHOLE WIRELINE TOOL

 #3
20220339768
2022-10-27

Hydraulic rotary-percussive hammer drill

 #4
20220178204
2022-06-09

Drill drive device for an earth drilling apparatus

 #5
20220042386
2022-02-10

Moon-based in-situ condition-preserved coring multi-stage large-depth drilling system and method therefor

 #6
20200232282
2020-07-23

Boring apparatus and method

 #7
20200224497
2020-07-16

Fluid Pulse Apparatus

 #8
20200149383
2020-05-14

DOWN-THE-HOLE DRILLING CONTROL SYSTEM FOR MOBILE DRILLING MACHINES

 #9
20200080379
2020-03-12

Drilling speed improvement device capable of producing both hydraulic pulse and impact vibration

 #10
20200080378
2020-03-12

Directional drilling apparatus using water hammer unit

 #11
20190345772
2019-11-14

Down-the-hole hammer drill bit retaining assembly

 #12
20180355668
2018-12-13

VIBRATIONAL DRILL HEAD

 #13
20180291687
2018-10-11

Boring apparatus and method

 #14
20180283101
2018-10-04

HAMMER DRILL

 #15
20180252040
2018-09-06

Up drill apparatus and method

 #16
20180163474
2018-06-14

Downhole mechanical percussive hammer drill assembly

 #17
20180106110
2018-04-19

Impact ice driller

 #18
20180010439
2018-01-11

Component for rock breaking system

 #19
20170356249
2017-12-14

Passively induced forced vibration rock drilling system

 #20
20170356248
2017-12-14

Hammer drill mechanism

 #21
20170275958
2017-09-28

Hydraulic drilling apparatus intended to drill boreholes

 #22
20170122034
2017-05-04

Turbine Assembly for use in a Downhole Pulsing Apparatus

 #23
20170051560
2017-02-23

Rotary percussive device

 #24
20160281449
2016-09-29

Flow controlling downhole tool

 #25
20160222732
2016-08-04

Down-the-hole drill hammer having a roller ramp clutch

 #26
20160160585
2016-06-09

Drive of an earth drilling device, earth drilling device, and a method for driving an earth drilling device

 #27
20160108678
2016-04-21

Boring apparatus and method

 #28
20160108677
2016-04-21

Up drill apparatus and method

 #29
20160108674
2016-04-21

Hammer drill

 #30
20150107904
2015-04-23

Systems and methods for producing forced axial vibration of a drillstring

 #31
20140360743
2014-12-11

Rock drilling machine, rotating sleeve and method for lubrication

 #32
20140311807
2014-10-23

REVERSE CIRCULATION HAMMER SPLINE ARRANGEMENT IMPROVEMENTS

 #33
20140238712
2014-08-28

Drive device and method for operating a drive device

 #34
20140041943
2014-02-13

Drilling motor valve and method of using same

 #35
20100300763
2010-12-02

Down-the-hole hammer drill

 #36
20100139985
2010-06-10

Vibratory drill head mounting and rotation coupling system

 #37
20090266613
2009-10-29

Force balancing system for use with a well bore tool

 #38
20090078468
2009-03-26

Rock drill machine

 #39
20060213690
2006-09-28

Rock drilling machine and axial bearing

 #40
20050236167
2005-10-27

Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string

 #41
17013306
2022-04-19

Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies