FR1190896A - Perfectionnements aux étais de mine télescopiques - Google Patents

Perfectionnements aux étais de mine télescopiques

Info

Publication number
FR1190896A
FR1190896A FR1190896DA FR1190896A FR 1190896 A FR1190896 A FR 1190896A FR 1190896D A FR1190896D A FR 1190896DA FR 1190896 A FR1190896 A FR 1190896A
Authority
FR
France
Prior art keywords
enhancements
mine props
telescopic
telescopic mine
props
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
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
Application granted granted Critical
Publication of FR1190896A publication Critical patent/FR1190896A/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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
FR1190896D 1957-01-31 1958-01-30 Perfectionnements aux étais de mine télescopiques Expired FR1190896A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3461/57A GB837916A (en) 1957-01-31 1957-01-31 Improvements relating to telescopic tubular pit props

Publications (1)

Publication Number Publication Date
FR1190896A true FR1190896A (fr) 1959-10-15

Family

ID=9758760

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1190896D Expired FR1190896A (fr) 1957-01-31 1958-01-30 Perfectionnements aux étais de mine télescopiques

Country Status (5)

Country Link
US (1) US3001808A (fr)
BE (1) BE564352A (fr)
DE (1) DE1052935B (fr)
FR (1) FR1190896A (fr)
GB (1) GB837916A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3443750A1 (de) * 1984-11-30 1986-06-05 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Vorrichtung, insbesondere hubwischeranlage fuer kraftfahrzeuge
US20100169540A1 (en) 2008-12-30 2010-07-01 Sinclair Alan W Method and apparatus for relocating selected data between flash partitions in a memory device
CN102140923B (zh) * 2011-04-12 2014-01-08 天地科技股份有限公司 导向环过焊缝大缸底双伸缩立柱
US9988793B2 (en) 2016-03-14 2018-06-05 Deere & Company Actuator rod scraper assembly
MX2021012317A (es) 2019-04-11 2021-11-12 Burrell Mining Products Inc Soporte de techo de mina, montaje de preinstalacion para el mismo y metodo de instalacion.

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US334037A (en) * 1886-01-12 Lewis hallock nash
US933789A (en) * 1907-08-29 1909-09-14 Jeffrey Mfg Co Cylinder-head.
US1232028A (en) * 1916-05-11 1917-07-03 Milo Harris Metallic packing.
US1482716A (en) * 1921-03-11 1924-02-05 Sudekum William Piston-rod packing
US1631520A (en) * 1923-03-29 1927-06-07 John L Creevy Packing
US1850489A (en) * 1929-05-10 1932-03-22 Baguley Cyril Prop for use in mines
US2247031A (en) * 1938-10-21 1941-06-24 Norton Mcmurray Mfg Company Pipe coupling
GB533048A (en) * 1939-10-02 1941-02-05 Ribbesford Company Ltd Improvements in or relating to shock absorbers
US2290507A (en) * 1941-04-07 1942-07-21 Globe Hoist Co Wiper and polisher for hydraulic hoist piston rods
US2473470A (en) * 1944-06-12 1949-06-14 Albert P Fall Alighting gear
US2678835A (en) * 1946-02-08 1954-05-18 Us Navy Rotating joint
GB608054A (en) * 1947-02-17 1948-09-09 Dowty Equipment Ltd Improvements in pit props
BE486663A (fr) * 1948-01-12
DE830338C (de) * 1949-06-03 1952-02-04 Friedrich Wilhelm Koerver Mit Fluessigkeit gefuellte Druckkapsel, insbesondere fuer Grubenstempel
FR1058216A (fr) * 1951-06-12 1954-03-15 étancon de mine en acier ou en métal léger
US2726882A (en) * 1953-05-29 1955-12-13 Standard Oil Co Adjustable high pressure rotating shaft seal

Also Published As

Publication number Publication date
US3001808A (en) 1961-09-26
DE1052935B (de) 1959-03-19
BE564352A (fr) 1960-06-17
GB837916A (en) 1960-06-15

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