FR2314416B1 - - Google Patents

Info

Publication number
FR2314416B1
FR2314416B1 FR7518997A FR7518997A FR2314416B1 FR 2314416 B1 FR2314416 B1 FR 2314416B1 FR 7518997 A FR7518997 A FR 7518997A FR 7518997 A FR7518997 A FR 7518997A FR 2314416 B1 FR2314416 B1 FR 2314416B1
Authority
FR
France
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
FR7518997A
Other languages
French (fr)
Other versions
FR2314416A1 (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 FR7518997A priority Critical patent/FR2314416A1/fr
Publication of FR2314416A1 publication Critical patent/FR2314416A1/fr
Application granted granted Critical
Publication of FR2314416B1 publication Critical patent/FR2314416B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/0034—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 comprising a goaf shield articulated to a base member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F16K17/0453—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the member being a diaphragm

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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
FR7518997A 1975-06-11 1975-06-11 Valve de surete perfectionnee, notamment pour etancons de mine Granted FR2314416A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7518997A FR2314416A1 (fr) 1975-06-11 1975-06-11 Valve de surete perfectionnee, notamment pour etancons de mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7518997A FR2314416A1 (fr) 1975-06-11 1975-06-11 Valve de surete perfectionnee, notamment pour etancons de mine

Publications (2)

Publication Number Publication Date
FR2314416A1 FR2314416A1 (fr) 1977-01-07
FR2314416B1 true FR2314416B1 (enrdf_load_stackoverflow) 1980-11-21

Family

ID=9156665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518997A Granted FR2314416A1 (fr) 1975-06-11 1975-06-11 Valve de surete perfectionnee, notamment pour etancons de mine

Country Status (1)

Country Link
FR (1) FR2314416A1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2314416A1 (fr) 1977-01-07

Similar Documents

Publication Publication Date Title
FR2314416B1 (enrdf_load_stackoverflow)
AU68341S (enrdf_load_stackoverflow)
BG21254A1 (enrdf_load_stackoverflow)
BG21446A1 (enrdf_load_stackoverflow)
BG21723A1 (enrdf_load_stackoverflow)
BG21777A1 (enrdf_load_stackoverflow)
BG22115A1 (enrdf_load_stackoverflow)
BG22255A1 (enrdf_load_stackoverflow)
BG22272A1 (enrdf_load_stackoverflow)
BG22287A1 (enrdf_load_stackoverflow)
BG22883A1 (enrdf_load_stackoverflow)
BG22964A1 (enrdf_load_stackoverflow)
BG23072A1 (enrdf_load_stackoverflow)
BG23158A1 (enrdf_load_stackoverflow)
CH1169075A4 (enrdf_load_stackoverflow)
CH574129A5 (enrdf_load_stackoverflow)
CH584603A5 (enrdf_load_stackoverflow)
CH586763A5 (enrdf_load_stackoverflow)
CH587757A5 (enrdf_load_stackoverflow)
CH589430A5 (enrdf_load_stackoverflow)
CH589441A5 (enrdf_load_stackoverflow)
CH592774B5 (enrdf_load_stackoverflow)
CH592898A5 (enrdf_load_stackoverflow)
CH592936A5 (enrdf_load_stackoverflow)
CH592977A5 (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
ST Notification of lapse