FR1177614A - Extendable hydraulic support - Google Patents

Extendable hydraulic support

Info

Publication number
FR1177614A
FR1177614A FR1177614DA FR1177614A FR 1177614 A FR1177614 A FR 1177614A FR 1177614D A FR1177614D A FR 1177614DA FR 1177614 A FR1177614 A FR 1177614A
Authority
FR
France
Prior art keywords
hydraulic support
extendable hydraulic
extendable
support
hydraulic
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
French (fr)
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.)
HILL PORTER NEWCASTLE Ltd
Original Assignee
HILL PORTER NEWCASTLE 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 HILL PORTER NEWCASTLE Ltd filed Critical HILL PORTER NEWCASTLE Ltd
Application granted granted Critical
Publication of FR1177614A publication Critical patent/FR1177614A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Actuator (AREA)
  • Reciprocating Pumps (AREA)
  • Safety Valves (AREA)
FR1177614D 1956-06-29 1957-06-28 Extendable hydraulic support Expired FR1177614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2013456A GB838790A (en) 1956-06-29 1956-06-29 Improvements in or relating to telescopic hydraulic props

Publications (1)

Publication Number Publication Date
FR1177614A true FR1177614A (en) 1959-04-28

Family

ID=10140922

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1177614D Expired FR1177614A (en) 1956-06-29 1957-06-28 Extendable hydraulic support

Country Status (4)

Country Link
BE (1) BE558677A (en)
DE (1) DE1125864B (en)
FR (1) FR1177614A (en)
GB (1) GB838790A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133720A (en) * 1962-03-27 1964-05-19 Commercial Shearing Yieldable pit posts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016105A (en) * 1950-04-07 1952-11-03 Hydraulically controlled extendable pillar, usable as a mine prop capable of withstanding high pressures
DE919525C (en) * 1951-05-01 1954-10-25 Gullick Ltd Hydraulic pit ram
DE934342C (en) * 1954-06-27 1955-10-20 Gutehoffnungshuette Sterkrade Multi-part hydraulic pit ram

Also Published As

Publication number Publication date
DE1125864B (en) 1962-03-22
BE558677A (en)
GB838790A (en) 1960-06-22

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