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BE632029A - - Google Patents

Info

Publication number
BE632029A
BE632029A BE632029DA BE632029A BE 632029 A BE632029 A BE 632029A BE 632029D A BE632029D A BE 632029DA BE 632029 A BE632029 A BE 632029A
Authority
BE
Belgium
Application number
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.)
Publication of BE632029A publication Critical patent/BE632029A/xx

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

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)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
BE632029D 1962-05-12 BE632029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG34969A DE1230390B (en) 1962-05-12 1962-05-12 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
BE632029A true BE632029A (en)

Family

ID=7125057

Family Applications (1)

Application Number Title Priority Date Filing Date
BE632029D BE632029A (en) 1962-05-12

Country Status (3)

Country Link
US (1) US3145964A (en)
BE (1) BE632029A (en)
DE (1) DE1230390B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016747A1 (en) * 1979-03-14 1980-10-01 VOEST-ALPINE Aktiengesellschaft Valve-system for controlling the extension of a hydraulic pit-prop

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236489A (en) * 1964-04-03 1966-02-22 Globe Pneumatic Engineering Co Power operated screw jacks
DE1226972B (en) * 1964-10-20 1966-10-20 Gewerk Eisenhuette Westfalia Hydraulic double telescopic ram
DE1290109B (en) * 1967-10-21 1969-03-06 Gewerk Eisenhuette Westfalia Stamp for expansion or bracing in the face / route transition
DE1960807C3 (en) * 1969-12-04 1979-02-01 Hippel Geb. Weiss, Sophie Von, 7771 Oberstenweiler Shield support frame
US4082657A (en) * 1976-01-19 1978-04-04 Gage Ernest L Separator apparatus
JPS60219395A (en) * 1984-04-16 1985-11-02 株式会社　イセキ開発工機 Pipe propelling apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US762627A (en) * 1904-01-21 1904-06-14 Ferdinand Fink Fluid-pressure motor.
US2473687A (en) * 1945-10-09 1949-06-21 Westinghouse Air Brake Co Fluid pressure relay valve mechanism
DE918561C (en) * 1951-08-08 1954-09-30 Arthur Hamel Hydraulic pit ram
FR1070316A (en) * 1952-02-05 1954-07-22 Coal Industry Patents Ltd Roof support for mines
DE960463C (en) * 1952-10-08 1957-03-21 Albert Ag Chem Werke Process for the preparation of 2, 4, 6-trimethylolphenols
US2754804A (en) * 1954-01-15 1956-07-17 Goodman Mfg Co Automatic feed pressure control for telescopic stoper leg
DE974823C (en) * 1955-05-28 1961-05-18 Gewerk Eisenhuette Westfalia Wandering pit support
AT195875B (en) * 1955-11-16 1958-02-25 Bochumer Eisen Heintzmann Longwall mining for underground mining
AT202953B (en) * 1957-01-25 1959-04-25 Beien Maschfab Hydraulic-pneumatic support devices, in particular pit rams
NL250626A (en) * 1959-04-24
DE1125863B (en) * 1961-06-19 1962-03-22 Gewerk Eisenhuette Westfalia Hydraulic ram, especially for tensioning purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016747A1 (en) * 1979-03-14 1980-10-01 VOEST-ALPINE Aktiengesellschaft Valve-system for controlling the extension of a hydraulic pit-prop

Also Published As

Publication number Publication date
US3145964A (en) 1964-08-25
DE1230390B (en) 1966-12-15

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