FR972665A - iron mine prop - Google Patents

iron mine prop

Info

Publication number
FR972665A
FR972665A FR972665DA FR972665A FR 972665 A FR972665 A FR 972665A FR 972665D A FR972665D A FR 972665DA FR 972665 A FR972665 A FR 972665A
Authority
FR
France
Prior art keywords
iron mine
mine prop
prop
iron
mine
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)
Inventor
Bernhard Langerbein
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR972665A publication Critical patent/FR972665A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
  • Clamps And Clips (AREA)
  • Aerials With Secondary Devices (AREA)
FR972665D 1948-08-31 1948-08-31 iron mine prop Expired FR972665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR972665T 1948-08-31

Publications (1)

Publication Number Publication Date
FR972665A true FR972665A (en) 1951-02-01

Family

ID=9516146

Family Applications (1)

Application Number Title Priority Date Filing Date
FR972665D Expired FR972665A (en) 1948-08-31 1948-08-31 iron mine prop

Country Status (4)

Country Link
BE (1) BE490915A (en)
DE (1) DE857034C (en)
FR (1) FR972665A (en)
GB (1) GB731795A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928643A (en) * 1953-02-21 1960-03-15 Bellmann Eugen Prop-type supporting device
CN112663952A (en) * 2020-12-06 2021-04-16 宿迁市高速铁路建设发展有限公司 Based on U type built-in fitting cornice board pour support frame

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972045C (en) * 1951-07-10 1959-05-21 Ernst Biefang Roller body clamp connection, especially for pit punches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928643A (en) * 1953-02-21 1960-03-15 Bellmann Eugen Prop-type supporting device
CN112663952A (en) * 2020-12-06 2021-04-16 宿迁市高速铁路建设发展有限公司 Based on U type built-in fitting cornice board pour support frame
CN112663952B (en) * 2020-12-06 2022-05-31 宿迁市高速铁路建设发展有限公司 Based on U type built-in fitting cornice board pour support frame

Also Published As

Publication number Publication date
DE857034C (en) 1952-11-27
BE490915A (en) 1949-09-15
GB731795A (en) 1955-06-15

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