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Industry

CPC
E21D23/0086

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D23/00Mine roof supports for step- by- step movement

Current Industry

E21D23/0086in galleries

Industries

Patents Grantslast 30 patents

Information Patent Grant
System and method for enabling machine movement
- Patent number 9,234,425
- Issue date Jan 12, 2016
- Caterpillar Global Mining America LLC
- Jeffrey D. Looney
- E21 - EARTH DRILLING MINING
Information Patent Grant
Equipment useful for winning ores particularly coal in longwall mining
- Patent number 5,368,369
- Issue date Nov 29, 1994
- Council of Scientific & Industrial Research
- Sibnath Maity
- E21 - EARTH DRILLING MINING
Information Patent Grant
Movable roof support and bolter system
- Patent number 4,710,064
- Issue date Dec 1, 1987
- Frank K. Stafford
- E21 - EARTH DRILLING MINING
Information Patent Grant
Movable roof support and bolter system
- Patent number 4,676,697
- Issue date Jun 30, 1987
- Frank K. Stafford
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof support assembly
- Patent number 4,526,495
- Issue date Jul 2, 1985
- Gewerkschaft Eisenhutte Westfalia
- Kunibert Becker
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuous sliding support gantry for a large passage
- Patent number 4,358,224
- Issue date Nov 9, 1982
- Charbonnages de France
- Guy Blanpain
- E21 - EARTH DRILLING MINING
Information Patent Grant
Walking mine-roof support
- Patent number 4,189,258
- Issue date Feb 19, 1980
- Hermann Hemscheidt Maschinenfabrik GmbH & Co.
- Alfred Maykemper
- E21 - EARTH DRILLING MINING
Information Patent Grant
3812680
- Patent number 3,812,680
- Issue date May 28, 1974
- E21 - EARTH DRILLING MINING
Information Patent Grant
3164066
- Patent number 3,164,066
- Issue date Jan 5, 1965
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MINING UNDERGROUND FORMATIONS
- Publication number 20180195390
- Publication date Jul 12, 2018
- Seneca Industries Inc.
- John Dickinson
- E21 - EARTH DRILLING MINING
Information Patent Application
SYSTEM AND METHOD FOR ENABLING MACHINE MOVEMENT
- Publication number 20140369769
- Publication date Dec 18, 2014
- Jeffrey D. Looney
- E21 - EARTH DRILLING MINING

in galleries

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

System and method for enabling machine movement

Equipment useful for winning ores particularly coal in longwall mining

Movable roof support and bolter system

Movable roof support and bolter system

Mine roof support assembly

Continuous sliding support gantry for a large passage

Walking mine-roof support

3812680

3164066

Patents Applicationslast 30 patents

MINING UNDERGROUND FORMATIONS

SYSTEM AND METHOD FOR ENABLING MACHINE MOVEMENT