FR1292586A - hydraulic prop - Google Patents

hydraulic prop

Info

Publication number
FR1292586A
FR1292586A FR865277A FR865277A FR1292586A FR 1292586 A FR1292586 A FR 1292586A FR 865277 A FR865277 A FR 865277A FR 865277 A FR865277 A FR 865277A FR 1292586 A FR1292586 A FR 1292586A
Authority
FR
France
Prior art keywords
hydraulic prop
prop
hydraulic
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
FR865277A
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.)
Acrow Engineers Ltd
Original Assignee
Acrow Engineers 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 Acrow Engineers Ltd filed Critical Acrow Engineers Ltd
Priority to FR865277A priority Critical patent/FR1292586A/en
Application granted granted Critical
Publication of FR1292586A publication Critical patent/FR1292586A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/063—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid comprising a hollow piston rod
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR865277A 1960-06-17 1961-06-17 hydraulic prop Expired FR1292586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR865277A FR1292586A (en) 1960-06-17 1961-06-17 hydraulic prop

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3134398X 1960-06-17
FR865277A FR1292586A (en) 1960-06-17 1961-06-17 hydraulic prop

Publications (1)

Publication Number Publication Date
FR1292586A true FR1292586A (en) 1962-05-04

Family

ID=26191077

Family Applications (1)

Application Number Title Priority Date Filing Date
FR865277A Expired FR1292586A (en) 1960-06-17 1961-06-17 hydraulic prop

Country Status (1)

Country Link
FR (1) FR1292586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757180A1 (en) * 2005-08-25 2007-02-28 Amazonen-Werke H. Dreyer GmbH & Co. KG Tillage tine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757180A1 (en) * 2005-08-25 2007-02-28 Amazonen-Werke H. Dreyer GmbH & Co. KG Tillage tine

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