FR1312940A - Soupapes de décompression et de sûreté pour étançons - Google Patents

Soupapes de décompression et de sûreté pour étançons

Info

Publication number
FR1312940A
FR1312940A FR886387A FR886387A FR1312940A FR 1312940 A FR1312940 A FR 1312940A FR 886387 A FR886387 A FR 886387A FR 886387 A FR886387 A FR 886387A FR 1312940 A FR1312940 A FR 1312940A
Authority
FR
France
Prior art keywords
props
pressure relief
safety valves
valves
safety
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
FR886387A
Other languages
English (en)
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR886387A priority Critical patent/FR1312940A/fr
Application granted granted Critical
Publication of FR1312940A publication Critical patent/FR1312940A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR886387A 1962-01-30 1962-01-30 Soupapes de décompression et de sûreté pour étançons Expired FR1312940A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR886387A FR1312940A (fr) 1962-01-30 1962-01-30 Soupapes de décompression et de sûreté pour étançons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR886387A FR1312940A (fr) 1962-01-30 1962-01-30 Soupapes de décompression et de sûreté pour étançons

Publications (1)

Publication Number Publication Date
FR1312940A true FR1312940A (fr) 1962-12-21

Family

ID=8771551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR886387A Expired FR1312940A (fr) 1962-01-30 1962-01-30 Soupapes de décompression et de sûreté pour étançons

Country Status (1)

Country Link
FR (1) FR1312940A (fr)

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