Patents-Review.com
ClassID:

135144 ⎘

E21B6/04 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
20250341132
2025-11-06

DRILLING ASSEMBLY

 #2
20250297925
2025-09-25

SAMPLING DRILL FOR LOW GRAVITY ENVIRONMENTS

 #3
20250297520
2025-09-25

AIR MOTOR ASSEMBLY

 #4
20240344398
2024-10-17

Percussion and Cutting Composite Drilling Tool

 #5
20240229581
2024-07-11

FLUSHING ELEMENT, ROCK DRILLING MACHINE AND METHOD

 #6
20240133254
2024-04-25

Flushing element, rock drilling machine and method

 #7
20240133247
2024-04-25

SHANK ADAPTER, ROCK DRILLING MACHINE AND METHOD

 #8
20230193694
2023-06-22

Percussion and Cutting Composite Drilling Tool

 #9
20230184037
2023-06-15

Spline lubrication for DTH hammers

 #10
20230151699
2023-05-18

Rotary percussive hydraulic drill provided with a shank equipped with coupling splines

 #11
20220154532
2022-05-19

Spiral impact drilling machine applicable to rock and soil and construction method

 #12
20210301593
2021-09-30

Percussion device

 #13
20210062586
2021-03-04

Arrangement and method for installing casing

 #14
20200270949
2020-08-27

Fluid operated drilling device and a method for drilling a hole

 #15
20200123856
2020-04-23

Downhole oscillation apparatus

 #16
20200102790
2020-04-02

Rotary drilling tool and method for producing a bore

 #17
20190330924
2019-10-31

Drilling and operating sigmoid-shaped wells

 #18
20190249496
2019-08-15

Drilling device for earth or rock drilling and method for retrofitting such a drilling device

 #19
20190040684
2019-02-07

Drilling and operating sigmoid-shaped wells

 #20
20190040683
2019-02-07

Drilling and operating sigmoid-shaped wells

 #21
20190024459
2019-01-24

Downhole oscillation apparatus

 #22
20180274299
2018-09-27

Multi fluid drilling system

 #23
20180274298
2018-09-27

Percussion device

 #24
20180230751
2018-08-16

Drilling and operating sigmoid-shaped wells

 #25
20180171723
2018-06-21

Shank adaptor with strengthened flushing hole

 #26
20180135620
2018-05-17

Hydraulic artificial lift for driving downhole pumps

 #27
20170356249
2017-12-14

Passively induced forced vibration rock drilling system

 #28
20170175446
2017-06-22

Force Stacking Assembly for Use with a Subterranean Excavating System

 #29
20160084005
2016-03-24

Hydraulic rotator converter for a hydraulic impact hammer and method

 #30
20150300117
2015-10-22

Seated hammer apparatus for core sampling

 #31
20150129308
2015-05-14

Coating of the piston for a rotating percussion system in downhole drilling

 #32
20140367133
2014-12-18

Hydraulic rotator converter for a hydraulic impact hammer and method

 #33
20140083775
2014-03-27

Rotary impact drill and double-layer drilling rod mechanism

 #34
20140054090
2014-02-27

Mechanical force generator for a downhole excitation apparatus

 #35
20130168153
2013-07-04

Hydraulic rotary percussive device intended to drill boreholes

 #36
20120292114
2012-11-22

Method and arrangement for lubricating drill shank of rock drilling machine

 #37
20120241219
2012-09-27

Resonance enhanced rotary drilling

 #38
20110240322
2011-10-06

Rock drilling machine and axial bearing module

 #39
20100288521
2010-11-18

Vibration hammer

 #40
20070181340
2007-08-09

Drilling apparatus with percussive action cutter

 #41
20050241859
2005-11-03

Bedrock drilling and excavating apparatus

 #42
20050045380
2005-03-03

Drilling apparatus