AT250271B - Hydraulic pit ram - Google Patents

Hydraulic pit ram

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)
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/en

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)
  • Actuator (AREA)
  • Forging (AREA)
AT50761A 1960-02-19 1961-01-20 Hydraulic pit ram AT250271B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB56733A DE1198306B (en) 1960-02-19 1960-02-19 Hydraulic pit ram

Publications (1)

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

Family

ID=6971441

Family Applications (1)

Application Number Title Priority Date Filing Date
AT50761A AT250271B (en) 1960-02-19 1961-01-20 Hydraulic pit ram

Country Status (6)

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

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 (en) * 1973-03-20 1974-07-15 Von Roll Ag PISTON FOR PISTON MACHINE.
JPS5523008Y2 (en) * 1975-10-15 1980-05-31
US4142449A (en) * 1976-02-03 1979-03-06 Thyssen Industrie Ag Hydraulic mine prop
AU564301B2 (en) * 1981-08-13 1987-08-06 Commonwealth Scientific And Industrial Research Organisation Reciprocatory piston and cylinder machine
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 (en) * 1951-08-08 1954-09-30 Arthur Hamel Hydraulic pit ram
DE1012275B (en) * 1953-09-09 1957-07-18 Coal Industry Patents Ltd Pit stamp
GB772543A (en) * 1954-06-26 1957-04-17 Gullick Ltd Improvements in or relating to props, chocks, and like roof supporting structures
DE1009137B (en) * 1955-12-14 1957-05-29 Hermann Schwarz K G Hydraulic pit ram with tubular inner and outer part

Also Published As

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

Similar Documents

Publication Publication Date Title
FR1249097A (en) Hydraulic lance
FR1291463A (en) Hydraulic transmission
AT250271B (en) Hydraulic pit ram
FR1191928A (en) Hydraulic hoist
CH390032A (en) Hydraulic straightening press
FR1253096A (en) Hydraulic coupler
FR1284387A (en) Hydraulic support
CH390059A (en) Hydraulic accumulator
AT195874B (en) Hydraulic pit ram
CH375232A (en) Hydraulic regulator
FR1273119A (en) Hydraulic winch
FR1280684A (en) hydraulic prop
FR1279260A (en) Hydraulic device-transformer-centrifuge
FR1258270A (en) Hydraulic motor-receiver
FR78812E (en) Improvements to hydraulic turbo-couplers
FR1292586A (en) hydraulic prop
AT199591B (en) Hydraulic pit ram
FR1263628A (en) Hydraulic transmission
FR1267625A (en) Hydraulic transmission
CH385524A (en) Hydraulic tachometer
AT226036B (en) Hydraulic straightening press
AT265175B (en) Hydraulic pit ram
BE596844A (en) Hydraulic winch
FR1252892A (en) Hydraulic distributor
FR1283309A (en) Hydraulic coupling