FR1214968A - Improvement in breather for hydraulic struts - Google Patents

Improvement in breather for hydraulic struts

Info

Publication number
FR1214968A
FR1214968A FR777059A FR777059A FR1214968A FR 1214968 A FR1214968 A FR 1214968A FR 777059 A FR777059 A FR 777059A FR 777059 A FR777059 A FR 777059A FR 1214968 A FR1214968 A FR 1214968A
Authority
FR
France
Prior art keywords
breather
improvement
hydraulic struts
struts
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
FR777059A
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.)
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
Application granted granted Critical
Publication of FR1214968A publication Critical patent/FR1214968A/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
    • 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
    • F16K17/10—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 auxiliary valve for fluid operation of the main valve
    • 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)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Safety Valves (AREA)
  • Closures For Containers (AREA)
FR777059A 1957-10-21 1958-10-20 Improvement in breather for hydraulic struts Expired FR1214968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3282757A GB870502A (en) 1957-10-21 1957-10-21 Improvements in breather valve arrangements for hydraulic props

Publications (1)

Publication Number Publication Date
FR1214968A true FR1214968A (en) 1960-04-13

Family

ID=10344586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777059A Expired FR1214968A (en) 1957-10-21 1958-10-20 Improvement in breather for hydraulic struts

Country Status (3)

Country Link
DE (1) DE1081849B (en)
FR (1) FR1214968A (en)
GB (1) GB870502A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071829A (en) * 2016-11-15 2018-05-25 定州四方诚信畜牧科技有限公司 A kind of new automatic breather valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004877B (en) * 1956-10-17 1957-03-21 Gutehoffnungshuette Sterkrade Vent valve for tiltable fluid containers, preferably of hydraulic pit rams

Also Published As

Publication number Publication date
DE1081849B (en) 1960-05-19
GB870502A (en) 1961-06-14

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