AU559835B2 - Telescopic ram - Google Patents

Telescopic ram

Info

Publication number
AU559835B2
AU559835B2 AU13931/83A AU1393183A AU559835B2 AU 559835 B2 AU559835 B2 AU 559835B2 AU 13931/83 A AU13931/83 A AU 13931/83A AU 1393183 A AU1393183 A AU 1393183A AU 559835 B2 AU559835 B2 AU 559835B2
Authority
AU
Australia
Prior art keywords
telescopic ram
telescopic
ram
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.)
Ceased
Application number
AU13931/83A
Other versions
AU1393183A (en
Inventor
Heinz Hessel
Karl-Heinz Plester
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia 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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of AU1393183A publication Critical patent/AU1393183A/en
Application granted granted Critical
Publication of AU559835B2 publication Critical patent/AU559835B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517—Extension elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Press Drives And Press Lines (AREA)
  • Actuator (AREA)
AU13931/83A 1982-04-28 1983-04-26 Telescopic ram Ceased AU559835B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE82121648 1982-04-28
DE19828212164 DE8212164U1 (en) 1982-04-28 1982-04-28 HYDRAULIC PRESS CYLINDER FOR PIPE PRESSING

Publications (2)

Publication Number Publication Date
AU1393183A AU1393183A (en) 1983-11-03
AU559835B2 true AU559835B2 (en) 1987-03-19

Family

ID=6739520

Family Applications (1)

Application Number Title Priority Date Filing Date
AU13931/83A Ceased AU559835B2 (en) 1982-04-28 1983-04-26 Telescopic ram

Country Status (3)

Country Link
AU (1) AU559835B2 (en)
DE (1) DE8212164U1 (en)
FR (1) FR2526091A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3622424A1 (en) * 1986-07-03 1988-01-14 Montan Hydraulik Gmbh & Co Kg TWO-STAGE TELESCOPIC CYLINDER
DE3829646A1 (en) * 1988-09-01 1990-03-15 Teves Gmbh Alfred RESERVOIR FOR A PRESSURE CIRCUIT, IN PARTICULAR AIRCRAFT HYDRAULIC CIRCUIT

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB954676A (en) * 1960-12-22 1964-04-08 Dowty Mining Equipment Ltd Telescopic hydraulic props
FR1366520A (en) * 1962-08-21 1964-07-10 Electro Hydraulics Ltd Support devices for mining operations
FR1431566A (en) * 1965-04-23 1966-03-11 Gewerk Eisenhuette Westfalia prop with removable sole, usable in particular in mines
US3610100A (en) * 1969-06-12 1971-10-05 Koehring Co Telescopic actuator
DE2941168A1 (en) * 1979-10-11 1981-04-23 Thyssen Industrie Ag, 4300 Essen Mine hydraulic thrust piston gear - has differential piston ring chamber gas filled for even telescopic step force distribution

Also Published As

Publication number Publication date
DE8212164U1 (en) 1982-08-12
FR2526091A1 (en) 1983-11-04
FR2526091B1 (en) 1985-04-26
AU1393183A (en) 1983-11-03

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