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with a movable support arm carrying cutting tools for attacking the front face
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Industry
CPC
E21D9/0875
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21D
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
E21D9/00
Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries
Current Industry
E21D9/0875
with a movable support arm carrying cutting tools for attacking the front face
Industries
Overview
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Cutting assembly for a mining machine
Patent number
11,846,189
Issue date
Dec 19, 2023
Sandvik Mining and Construction G.m.b.H.
Friedrich Pucher
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hard rock roadway and tunnel boring machine with actively rotating...
Patent number
11,199,092
Issue date
Dec 14, 2021
China University of Mining and Technology
Hongxiang Jiang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield advancing machine
Patent number
4,805,963
Issue date
Feb 21, 1989
Voest-Alpine Aktiengesellschaft
Peter Kogler
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cutting appliances for use in tunnel driving operations
Patent number
4,556,256
Issue date
Dec 3, 1985
Gewerkschaft Eisenhutte Westfalia
Hans G. Follert
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Machine for making underground galleries
Patent number
4,508,390
Issue date
Apr 2, 1985
Foncages et Forages Bessac, S.A.
Michel Bessac
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunnel excavator
Patent number
4,387,928
Issue date
Jun 14, 1983
Milwaukee Boiler Manufacturing Co.
Richard W. Stevens
E21 - EARTH DRILLING MINING
Information
Patent Grant
Driving shield
Patent number
4,368,924
Issue date
Jan 18, 1983
Ed. Zublin Aktiengesellschaft
Manfred Nussbaumer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunnel boring machine
Patent number
4,349,230
Issue date
Sep 14, 1982
Zokor Corporation
Herman Hamburger
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Shield for tunneling and mining
Patent number
4,332,508
Issue date
Jun 1, 1982
Philipp Holzmann Aktiengesellschaft
Wilfried Krabbe
E21 - EARTH DRILLING MINING
Information
Patent Grant
Slideway means and excavating machines comprising slideway means
Patent number
4,303,275
Issue date
Dec 1, 1981
Coal Industry (Patents) Limited
Francis A. Haskew
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cutter unit assemblies for excavating machines and to excavating ma...
Patent number
4,302,054
Issue date
Nov 24, 1981
Coal Industry (Patents) Limited
Francis A. Haskew
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield assemblies for installation in under-ground roadways and roc...
Patent number
4,289,356
Issue date
Sep 15, 1981
Coal Industry (Patents) Limited
Terence R. Howard
E21 - EARTH DRILLING MINING
Information
Patent Grant
Conveyor mounted excavator
Patent number
4,283,090
Issue date
Aug 11, 1981
The Robbins Company
Tyman H. Fikse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunnel driving apparatus with cutter arms internal and external of...
Patent number
4,248,481
Issue date
Feb 3, 1981
Gewerkschaft Eisenhutte Westfalia
Wilhelm Stoltefuss
E21 - EARTH DRILLING MINING
Information
Patent Grant
Articulated boom-dipper-bucket assembly for a tunnel boring machine
Patent number
4,203,626
Issue date
May 20, 1980
Zokor Corporation
Herman Hamburger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Excavator for use in a tunneling shield
Patent number
4,190,294
Issue date
Feb 26, 1980
The Robbins Company
Tyman H. Fikse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for use in mining or tunnelling installations
Patent number
4,055,959
Issue date
Nov 1, 1977
Gewerkschaft Eisenhutte Westfalia
Giselher Fritz
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunneling equipment
Patent number
3,966,256
Issue date
Jun 29, 1976
The Robbins Company
Tyman H. Fikse
E21 - EARTH DRILLING MINING
Information
Patent Grant
3922016
Patent number
3,922,016
Issue date
Nov 25, 1975
E21 - EARTH DRILLING MINING
Information
Patent Grant
3656810
Patent number
3,656,810
Issue date
Apr 18, 1972
E21 - EARTH DRILLING MINING
Information
Patent Grant
3613383
Patent number
3,613,383
Issue date
Oct 19, 1971
E21 - EARTH DRILLING MINING
Information
Patent Grant
3612609
Patent number
3,612,609
Issue date
Oct 12, 1971
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
3578809
Patent number
3,578,809
Issue date
May 18, 1971
E21 - EARTH DRILLING MINING
Information
Patent Grant
3558193
Patent number
3,558,193
Issue date
Jan 26, 1971
E21 - EARTH DRILLING MINING
Information
Patent Grant
3556599
Patent number
3,556,599
Issue date
Jan 19, 1971
E21 - EARTH DRILLING MINING
Information
Patent Grant
3404920
Patent number
3,404,920
Issue date
Oct 8, 1968
E21 - EARTH DRILLING MINING
Information
Patent Grant
2213684
Patent number
2,213,684
Issue date
Sep 3, 1940
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
CUTTING ASSEMBLY FOR A MINING MACHINE
Publication number
20230048925
Publication date
Feb 16, 2023
Sandvik Mining and Construction G.m.b.H.
Friedrich PUCHER
E21 - EARTH DRILLING MINING
Information
Patent Application
TUNNEL EXCAVATION DEVICE
Publication number
20140327292
Publication date
Nov 6, 2014
KOREA RAILROAD RESEARCH INSTITUTE
Dong Hyeon Kim
E21 - EARTH DRILLING MINING