Details of locks of telescopic props

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CPC
E21D15/56

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EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

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E21D15/56Details of locks of telescopic props

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Patents Grantslast 30 patents

Information Patent Grant
Sleeve holder for a hydraulic cylinder
- Patent number 10,385,888
- Issue date Aug 20, 2019
- Caterpillar Global Mining Europe GmbH
- Christian Knoblich
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Device for roof support of underground mine/tunnel
- Patent number 9,267,375
- Issue date Feb 23, 2016
- Council of Scientific and Industrial Research
- Sudhir Kumar Kashyap
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuously adjustable rescue strut
- Patent number 6,394,405
- Issue date May 28, 2002
- Para Tech Incorporated
- George F. Roxton
- E04 - BUILDING
Information Patent Grant
Support column for use in a mine
- Patent number 5,484,130
- Issue date Jan 16, 1996
- Bochumer Eisenhutte Heintzmann GmbH & Co. KG
- Lothar Domanski
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DEVICE FOR ROOF SUPPORT OF UNDERGROUND MINE/TUNNEL
- Publication number 20130039704
- Publication date Feb 14, 2013
- Sudhir Kumar Kashyap
- E21 - EARTH DRILLING MINING