AT250271B - Hydraulischer Grubenstempel - Google Patents

Hydraulischer Grubenstempel

Info

Publication number
AT250271B
AT250271B AT50761A AT50761A AT250271B AT 250271 B AT250271 B AT 250271B AT 50761 A AT50761 A AT 50761A AT 50761 A AT50761 A AT 50761A AT 250271 B AT250271 B AT 250271B
Authority
AT
Austria
Prior art keywords
hydraulic pit
ram
pit ram
hydraulic
pit
Prior art date
Application number
AT50761A
Other languages
German (de)
English (en)
Original Assignee
Bochumer Eisen Heintzmann
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 Bochumer Eisen Heintzmann filed Critical Bochumer Eisen Heintzmann
Application granted granted Critical
Publication of AT250271B publication Critical patent/AT250271B/de

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket

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)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Forging (AREA)
  • Actuator (AREA)
AT50761A 1960-02-19 1961-01-20 Hydraulischer Grubenstempel AT250271B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB56733A DE1198306B (de) 1960-02-19 1960-02-19 Hydraulischer Grubenstempel

Publications (1)

Publication Number Publication Date
AT250271B true AT250271B (de) 1966-11-10

Family

ID=6971441

Family Applications (1)

Application Number Title Priority Date Filing Date
AT50761A AT250271B (de) 1960-02-19 1961-01-20 Hydraulischer Grubenstempel

Country Status (6)

Country Link
US (1) US3172340A (sv)
AT (1) AT250271B (sv)
BE (1) BE600368A (sv)
DE (1) DE1198306B (sv)
GB (1) GB961983A (sv)
NL (1) NL261134A (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313347A (en) * 1963-01-09 1967-04-11 Gray Tool Co Well completion procedures and apparatus
US3395619A (en) * 1965-08-23 1968-08-06 Grebe Konrad Hydraulic propping apparatus with automatic overload protection means
CH551578A (de) * 1973-03-20 1974-07-15 Von Roll Ag Kolben fuer kolbenmaschine.
JPS5523008Y2 (sv) * 1975-10-15 1980-05-31
US4142449A (en) * 1976-02-03 1979-03-06 Thyssen Industrie Ag Hydraulic mine prop
JPS58501474A (ja) * 1981-08-13 1983-09-01 コモンウエルス　サイエンテイフイツク　アンド　インダストリアルリサ−チ　オ−ガニゼイシヨン 往復動ピストン−シリンダ装置
US5205382A (en) * 1990-10-09 1993-04-27 The B. F. Goodrich Company Aircraft brake
US5413031A (en) * 1994-01-06 1995-05-09 Parker-Hannifin Corporation Alignment coupler for linear device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918561C (de) * 1951-08-08 1954-09-30 Arthur Hamel Hydraulischer Grubenstempel
DE1012275B (de) * 1953-09-09 1957-07-18 Coal Industry Patents Ltd Grubenstempel
GB772543A (en) * 1954-06-26 1957-04-17 Gullick Ltd Improvements in or relating to props, chocks, and like roof supporting structures
DE1009137B (de) * 1955-12-14 1957-05-29 Hermann Schwarz K G Hydraulischer Grubenstempel mit rohrfoermigem Innen- und Aussenteil

Also Published As

Publication number Publication date
NL261134A (sv)
BE600368A (sv)
US3172340A (en) 1965-03-09
GB961983A (en) 1964-06-24
DE1198306B (de) 1965-08-12

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