FR2300894A1 - Dispo - Google Patents

Dispo

Info

Publication number
FR2300894A1
FR2300894A1 FR7504902A FR7504902A FR2300894A1 FR 2300894 A1 FR2300894 A1 FR 2300894A1 FR 7504902 A FR7504902 A FR 7504902A FR 7504902 A FR7504902 A FR 7504902A FR 2300894 A1 FR2300894 A1 FR 2300894A1
Authority
FR
France
Prior art keywords
piston
roof support
pressure accumulator
housed inside
sledge
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.)
Granted
Application number
FR7504902A
Other languages
English (en)
Other versions
FR2300894B1 (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.)
Bennes Marrel SA
Original Assignee
Bennes Marrel SA
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
Application filed by Bennes Marrel SA filed Critical Bennes Marrel SA
Priority to FR7504902A priority Critical patent/FR2300894A1/fr
Publication of FR2300894A1 publication Critical patent/FR2300894A1/fr
Application granted granted Critical
Publication of FR2300894B1 publication Critical patent/FR2300894B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Fluid-Damping Devices (AREA)
FR7504902A 1975-02-12 1975-02-12 Dispo Granted FR2300894A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7504902A FR2300894A1 (fr) 1975-02-12 1975-02-12 Dispo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7504902A FR2300894A1 (fr) 1975-02-12 1975-02-12 Dispo

Publications (2)

Publication Number Publication Date
FR2300894A1 true FR2300894A1 (fr) 1976-09-10
FR2300894B1 FR2300894B1 (fr) 1979-03-02

Family

ID=9151323

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504902A Granted FR2300894A1 (fr) 1975-02-12 1975-02-12 Dispo

Country Status (1)

Country Link
FR (1) FR2300894A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246481A1 (de) * 1981-12-15 1983-06-23 Tatabányai Szénbányák, 2800 Tatabánya Hydraulischer zylinder, insbesondere grubenstempel, mit kombinierter funktion
WO2023147203A1 (fr) * 2022-01-25 2023-08-03 Caterpillar Inc. Unité de soutènement de toit pour une machine d'exploitation minière

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE574822C (de) * 1931-04-19 1933-04-20 Dorstener Drahtwerke H W Brune Nachgiebiger Grubenstempel
FR1001031A (fr) * 1948-03-06 1952-02-19 Mavor & Coulson Ltd étai extensible perfectionné
FR1022030A (fr) * 1949-07-14 1953-02-26 Gutehoffnungshuette Oberhausen étançon de mine pneumatique ou hydraulique
US2753036A (en) * 1952-03-06 1956-07-03 Joy Mfg Co Mine roof support-equipped mining apparatus
FR1280693A (fr) * 1960-11-29 1962-01-08 Nikex Nehezipari Kulkere étançon de mine hydropneumatique
FR1349067A (fr) * 1962-03-07 1964-01-10 Gewerk Eisenhuette Westfalia étançon de mine hydraulique protégé contre la corrosion
DE2340673A1 (de) * 1972-08-11 1974-03-07 Zaklady K Mechanizacyjne Przem Grubenausbau

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE574822C (de) * 1931-04-19 1933-04-20 Dorstener Drahtwerke H W Brune Nachgiebiger Grubenstempel
FR1001031A (fr) * 1948-03-06 1952-02-19 Mavor & Coulson Ltd étai extensible perfectionné
FR1022030A (fr) * 1949-07-14 1953-02-26 Gutehoffnungshuette Oberhausen étançon de mine pneumatique ou hydraulique
US2753036A (en) * 1952-03-06 1956-07-03 Joy Mfg Co Mine roof support-equipped mining apparatus
FR1280693A (fr) * 1960-11-29 1962-01-08 Nikex Nehezipari Kulkere étançon de mine hydropneumatique
FR1349067A (fr) * 1962-03-07 1964-01-10 Gewerk Eisenhuette Westfalia étançon de mine hydraulique protégé contre la corrosion
DE2340673A1 (de) * 1972-08-11 1974-03-07 Zaklady K Mechanizacyjne Przem Grubenausbau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246481A1 (de) * 1981-12-15 1983-06-23 Tatabányai Szénbányák, 2800 Tatabánya Hydraulischer zylinder, insbesondere grubenstempel, mit kombinierter funktion
WO2023147203A1 (fr) * 2022-01-25 2023-08-03 Caterpillar Inc. Unité de soutènement de toit pour une machine d'exploitation minière

Also Published As

Publication number Publication date
FR2300894B1 (fr) 1979-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse