GB874999A - Hydraulic telescopic pit props - Google Patents

Hydraulic telescopic pit props

Info

Publication number
GB874999A
GB874999A GB2598/59A GB259859A GB874999A GB 874999 A GB874999 A GB 874999A GB 2598/59 A GB2598/59 A GB 2598/59A GB 259859 A GB259859 A GB 259859A GB 874999 A GB874999 A GB 874999A
Authority
GB
United Kingdom
Prior art keywords
hydraulic telescopic
pit props
cap
telescopic pit
cover
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
GB2598/59A
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau 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 BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of GB874999A publication Critical patent/GB874999A/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
    • E21D15/50—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
    • 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
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet

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)
  • Protection Of Plants (AREA)

Abstract

874,999. Hydraulic pit props. BWG BERGWERK-UND WALZWERK MASCHINENBAU G.m.b.H. Jan 23, 1959 [Feb. 20, 1958; May 22, 1958], No. 2598/59: Class 20(2) [Also in Group XXVI] An hydraulic pit prop having a cylinder 1 closed at its foot end by a cover 3 clamped thereto by a cap 2 (Group XXVI) may have a foot extension attached either to the cover 3 or cap 2.
GB2598/59A 1958-02-20 1959-01-23 Hydraulic telescopic pit props Expired GB874999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE874999X 1958-02-20

Publications (1)

Publication Number Publication Date
GB874999A true GB874999A (en) 1961-08-16

Family

ID=6817084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2598/59A Expired GB874999A (en) 1958-02-20 1959-01-23 Hydraulic telescopic pit props

Country Status (1)

Country Link
GB (1) GB874999A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055691A1 (en) * 2010-12-22 2012-06-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Cylinder assembly has one cylinder having one cylinder port, where another cylinder is equipped with another cylinder port
CN107352130A (en) * 2017-08-18 2017-11-17 沈阳华晨塑料制品有限公司 A kind of telescopic piston oil suction disk and grease tank
DE102017001133A1 (en) 2017-02-07 2018-08-09 Liebherr-Components Kirchdorf GmbH Cylinder-piston device with at least one inner tube and at least one outer tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055691A1 (en) * 2010-12-22 2012-06-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Cylinder assembly has one cylinder having one cylinder port, where another cylinder is equipped with another cylinder port
DE102010055691B4 (en) * 2010-12-22 2015-02-12 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Cylinder assembly, automatic transmission and method of assembling a cylinder assembly
DE102017001133A1 (en) 2017-02-07 2018-08-09 Liebherr-Components Kirchdorf GmbH Cylinder-piston device with at least one inner tube and at least one outer tube
CN107352130A (en) * 2017-08-18 2017-11-17 沈阳华晨塑料制品有限公司 A kind of telescopic piston oil suction disk and grease tank

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