FR1176882A - Improvements to hydraulic mine props - Google Patents

Improvements to hydraulic mine props

Info

Publication number
FR1176882A
FR1176882A FR1176882DA FR1176882A FR 1176882 A FR1176882 A FR 1176882A FR 1176882D A FR1176882D A FR 1176882DA FR 1176882 A FR1176882 A FR 1176882A
Authority
FR
France
Prior art keywords
mine props
hydraulic mine
hydraulic
props
mine
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
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau GmbH
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 Becorit Grubenausbau GmbH filed Critical Becorit Grubenausbau GmbH
Application granted granted Critical
Publication of FR1176882A publication Critical patent/FR1176882A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • 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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Linear Motors (AREA)
  • Reciprocating Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
FR1176882D 1956-06-28 1957-06-27 Improvements to hydraulic mine props Expired FR1176882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB40843A DE1081848B (en) 1956-06-28 1956-06-28 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
FR1176882A true FR1176882A (en) 1959-04-16

Family

ID=6966204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1176882D Expired FR1176882A (en) 1956-06-28 1957-06-27 Improvements to hydraulic mine props

Country Status (4)

Country Link
US (1) US2981199A (en)
DE (1) DE1081848B (en)
FR (1) FR1176882A (en)
GB (1) GB870514A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262776B (en) * 1964-06-27 1968-03-07 Eberspaecher J Fuel piston pump, especially for oil firing
US3502026A (en) * 1968-01-15 1970-03-24 Akira Toyoda Electromagnetic pump
JPS49127109A (en) * 1973-04-09 1974-12-05
DE3821320A1 (en) * 1988-06-24 1989-12-28 Teves Gmbh Alfred Pressure-medium source for a hydraulic system, in particular a brake system
US5107678A (en) * 1991-05-17 1992-04-28 Barber-Colman Company Floating fluid-operated actuator
CN113217365B (en) * 2021-03-31 2022-11-11 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Method, system and equipment for monitoring state of circulating slurry pump of desulfurization facility

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364882A (en) * 1919-12-10 1921-01-11 Walter F Koken Barber's chair
US1953606A (en) * 1932-04-02 1934-04-03 Roper Corp Geo D Pumping unit
US1969920A (en) * 1932-07-22 1934-08-14 Lubrication Corp Lubrication device
US2134501A (en) * 1935-10-18 1938-10-25 A E Feragen Inc Axle press
US2554127A (en) * 1945-02-01 1951-05-22 Fielding B Simmons Hydraulic jack
US2435326A (en) * 1945-03-02 1948-02-03 Duff Norton Mfg Company Fluid pump
BE486663A (en) * 1948-01-12
US2605613A (en) * 1950-01-30 1952-08-05 Elmeg Electrohydraulic moving device
US2685838A (en) * 1950-11-18 1954-08-10 Mcgraw Electric Co Electromagnetic pump
US2669186A (en) * 1951-11-28 1954-02-16 Bendix Aviat Corp Reciprocatory electromagnetic pump
FR1082903A (en) * 1952-06-16 1955-01-04 Mining Engineering Co Ltd Mine roof supports
BE532039A (en) * 1953-09-24 1900-01-01
US2833221A (en) * 1954-10-27 1958-05-06 Bendix Aviat Corp Electro-magnetic plunger pump
US2751753A (en) * 1955-01-11 1956-06-26 Gen Controls Co Hydraulic motor system

Also Published As

Publication number Publication date
US2981199A (en) 1961-04-25
DE1081848B (en) 1960-05-19
GB870514A (en) 1961-06-14

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