FR1366520A - Support systems for mining operations - Google Patents

Support systems for mining operations

Info

Publication number
FR1366520A
FR1366520A FR945191A FR945191A FR1366520A FR 1366520 A FR1366520 A FR 1366520A FR 945191 A FR945191 A FR 945191A FR 945191 A FR945191 A FR 945191A FR 1366520 A FR1366520 A FR 1366520A
Authority
FR
France
Prior art keywords
support systems
mining operations
mining
operations
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR945191A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB3213262A priority Critical patent/GB977800A/en
Application filed by Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to FR945191A priority patent/FR1366520A/en
Application granted granted Critical
Publication of FR1366520A publication Critical patent/FR1366520A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/44Hydraulic, pneumatic, or hydraulic-pneumatic props
FR945191A 1962-08-21 1963-08-20 Support systems for mining operations Expired FR1366520A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3213262A GB977800A (en) 1962-08-21 1962-08-21 Improvements in or relating to mine roof supports
FR945191A FR1366520A (en) 1962-08-21 1963-08-20 Support systems for mining operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR945191A FR1366520A (en) 1962-08-21 1963-08-20 Support systems for mining operations

Publications (1)

Publication Number Publication Date
FR1366520A true FR1366520A (en) 1964-07-10

Family

ID=26202970

Family Applications (1)

Application Number Title Priority Date Filing Date
FR945191A Expired FR1366520A (en) 1962-08-21 1963-08-20 Support systems for mining operations

Country Status (1)

Country Link
FR (1) FR1366520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526091A1 (en) * 1982-04-28 1983-11-04 Gewerk Eisenhuette Westfalia Hydraulic ram for horizontal well or shaft sinking - using two telescopic pistons, and with mounting plates provided with universal joints

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526091A1 (en) * 1982-04-28 1983-11-04 Gewerk Eisenhuette Westfalia Hydraulic ram for horizontal well or shaft sinking - using two telescopic pistons, and with mounting plates provided with universal joints

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