by wedges

Industry

CPC
E21C37/02

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C37/00Other methods or devices for dislodging with or without loading

Current Industry

E21C37/02by wedges

Industries

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for removing debris from a drill hole during d...
- Patent number 11,591,867
- Issue date Feb 28, 2023
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for splitting or cleaving rock
- Patent number 11,002,134
- Issue date May 11, 2021
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulically operated splitting device
- Patent number 10,612,377
- Issue date Apr 7, 2020
- DARDA GmbH
- Burkhard Darda
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method and apparatus for splitting or cleaving rock
- Patent number 10,087,755
- Issue date Oct 2, 2018
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Splitting wedge
- Patent number 8,757,135
- Issue date Jun 24, 2014
- Kirnuvuori Oy
- Jouko Vanhatalo
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Crushing structure of crusher
- Patent number 7,188,910
- Issue date Mar 13, 2007
- Hirado Kinzoku Kogyo Co., Ltd.
- Yoshitaka Saito
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process and device for splitting stones
- Patent number 6,539,933
- Issue date Apr 1, 2003
- Stu-Stein, Teknologi og Utvikling
- Roar Nordhagen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for building-up bursting forces
- Patent number 4,865,391
- Issue date Sep 12, 1989
- Ivan V. Chevakin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for mechanically breaking up rock
- Patent number 4,566,736
- Issue date Jan 28, 1986
- Kabushiki Kaisha Komatsu Seisakusho
- Shigetake Akanuma
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for breaking rock or concrete
- Patent number 4,311,343
- Issue date Jan 19, 1982
- Terraspace, Inc.
- William C. Cooley
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansible apparatus for removing the surface layer from a concrete...
- Patent number 4,152,028
- Issue date May 1, 1979
- The United States of America as represented by the United States Department o...
- Charles H. Allen
- E04 - BUILDING
Information Patent Grant
Apparatus for mechanically breaking up stone or reinforced concrete
- Patent number 4,026,602
- Issue date May 31, 1977
- H. Bieri AG, Liebefeld
- Hans Bieri
- E04 - BUILDING
Information Patent Grant
3619009
- Patent number 3,619,009
- Issue date Nov 9, 1971
- E21 - EARTH DRILLING MINING
Information Patent Grant
3526434
- Patent number 3,526,434
- Issue date Sep 1, 1970
- E21 - EARTH DRILLING MINING
Information Patent Grant
3439954
- Patent number 3,439,954
- Issue date Apr 22, 1969
- E21 - EARTH DRILLING MINING
Information Patent Grant
2831668
- Patent number 2,831,668
- Issue date Apr 22, 1958
- E21 - EARTH DRILLING MINING
Information Patent Grant
2132114
- Patent number 2,132,114
- Issue date Oct 4, 1938
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR REMOVING DEBRIS FROM A DRILL HOLE DURING D...
- Publication number 20240060371
- Publication date Feb 22, 2024
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR REMOVING DEBRIS FROM A DRILL HOLE DURING D...
- Publication number 20210172317
- Publication date Jun 10, 2021
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Application
Hydraulically operated splitting device
- Publication number 20190024507
- Publication date Jan 24, 2019
- DARDA GmbH
- Burkhard Darda
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR SPLITTING OR CLEAVING ROCK
- Publication number 20180371906
- Publication date Dec 27, 2018
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR SPLITTING OR CLEAVING ROCK
- Publication number 20170260858
- Publication date Sep 14, 2017
- L. Curtis Beaton
- E21 - EARTH DRILLING MINING
Information Patent Application
CARTRIDGE FOR TUNNEL BLASTING
- Publication number 20150102652
- Publication date Apr 16, 2015
- KOREA RAILROAD RESEARCH INSTITUTE
- Dong Hyeon Kim
- E21 - EARTH DRILLING MINING
Information Patent Application
SPLITTING WEDGE
- Publication number 20110226228
- Publication date Sep 22, 2011
- KIRNUVUORI OY
- Jouko Vanhatalo
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Crushing structure of crusher
- Publication number 20060152066
- Publication date Jul 13, 2006
- Hirado Kinzoku Kogyo Co., Ltd.
- Yoshitaka Saito
- E21 - EARTH DRILLING MINING

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method and apparatus for removing debris from a drill hole during d...

Method and apparatus for splitting or cleaving rock

Hydraulically operated splitting device

Method and apparatus for splitting or cleaving rock

Splitting wedge

Crushing structure of crusher

Process and device for splitting stones

Apparatus for building-up bursting forces

Apparatus for mechanically breaking up rock

Apparatus for breaking rock or concrete

Expansible apparatus for removing the surface layer from a concrete...

Apparatus for mechanically breaking up stone or reinforced concrete

3619009

3526434

3439954

2831668

2132114

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR REMOVING DEBRIS FROM A DRILL HOLE DURING D...

METHOD AND APPARATUS FOR REMOVING DEBRIS FROM A DRILL HOLE DURING D...

Hydraulically operated splitting device

METHOD AND APPARATUS FOR SPLITTING OR CLEAVING ROCK

METHOD AND APPARATUS FOR SPLITTING OR CLEAVING ROCK

CARTRIDGE FOR TUNNEL BLASTING

SPLITTING WEDGE

Crushing structure of crusher