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GB970917A - Hydraulic pit prop - Google Patents

Hydraulic pit prop

Info

Publication number
GB970917A
GB970917A GB4385762A GB4385762A GB970917A GB 970917 A GB970917 A GB 970917A GB 4385762 A GB4385762 A GB 4385762A GB 4385762 A GB4385762 A GB 4385762A GB 970917 A GB970917 A GB 970917A
Authority
GB
United Kingdom
Prior art keywords
hydraulic pit
valve
pit prop
pressure chamber
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
GB4385762A
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.)
HANS JOE RHEINBAY
Original Assignee
HANS JOE RHEINBAY
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
Priority to FR915879A priority Critical patent/FR1345213A/en
Application filed by HANS JOE RHEINBAY filed Critical HANS JOE RHEINBAY
Priority to GB4385762A priority patent/GB970917A/en
Publication of GB970917A publication Critical patent/GB970917A/en
Expired 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
    • E21D15/14—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)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Safety Valves (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

970,917. Hydraulic pit props. H. J. RHEINBAY. Nov. 20, 1962, No. 43857/62. Heading E1E. In an hydraulic pit prop having a charging valve 12 and a combined relief/release valve 13 the valves are mounted in a common disconnectable housing 8 having a base 9 disposed transverse to that of the axis of the pressure chamber and communicating therewith by a T-connection as shown, the valve 13 controlling communication between the pressure chamber and an annular chamber 16 having a vent 17.
GB4385762A 1962-11-19 1962-11-20 Hydraulic pit prop Expired GB970917A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR915879A FR1345213A (en) 1962-11-19 1962-11-19 hydraulic prop for mines
GB4385762A GB970917A (en) 1962-11-20 1962-11-20 Hydraulic pit prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4385762A GB970917A (en) 1962-11-20 1962-11-20 Hydraulic pit prop

Publications (1)

Publication Number Publication Date
GB970917A true GB970917A (en) 1964-09-23

Family

ID=10430619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4385762A Expired GB970917A (en) 1962-11-19 1962-11-20 Hydraulic pit prop

Country Status (1)

Country Link
GB (1) GB970917A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426995A (en) * 1965-12-22 1969-02-11 Allinquant Fernand St Hydraulic pit prop
FR2474112A1 (en) * 1980-01-21 1981-07-24 Commercial Shearing LONG-HOLE CYLINDER THAT CAN SERVE MINE ROOF SUPPORT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426995A (en) * 1965-12-22 1969-02-11 Allinquant Fernand St Hydraulic pit prop
FR2474112A1 (en) * 1980-01-21 1981-07-24 Commercial Shearing LONG-HOLE CYLINDER THAT CAN SERVE MINE ROOF SUPPORT

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