FR995746A - étançons à vis - Google Patents

étançons à vis

Info

Publication number
FR995746A
FR995746A FR995746DA FR995746A FR 995746 A FR995746 A FR 995746A FR 995746D A FR995746D A FR 995746DA FR 995746 A FR995746 A FR 995746A
Authority
FR
France
Prior art keywords
screw props
props
screw
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
English (en)
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.)
EQUIP IND ET MINIER SOC D
Original Assignee
EQUIP IND ET MINIER SOC D
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 EQUIP IND ET MINIER SOC D filed Critical EQUIP IND ET MINIER SOC D
Application granted granted Critical
Publication of FR995746A publication Critical patent/FR995746A/fr
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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism

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)
FR995746D 1949-08-03 1949-08-03 étançons à vis Expired FR995746A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR995746T 1949-08-03

Publications (1)

Publication Number Publication Date
FR995746A true FR995746A (fr) 1951-12-06

Family

ID=9557419

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995746D Expired FR995746A (fr) 1949-08-03 1949-08-03 étançons à vis

Country Status (1)

Country Link
FR (1) FR995746A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924022C (de) * 1952-07-04 1955-02-24 Ringfeder Gmbh Im Druckstueck eines Grubenstempels mittels Kugelgelenkes beweglich angeordnete Kronenplatte
DE1039971B (de) * 1955-05-16 1958-10-02 Karl Gerlach Zwei- oder mehrteiliger Grubenstempel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924022C (de) * 1952-07-04 1955-02-24 Ringfeder Gmbh Im Druckstueck eines Grubenstempels mittels Kugelgelenkes beweglich angeordnete Kronenplatte
DE1039971B (de) * 1955-05-16 1958-10-02 Karl Gerlach Zwei- oder mehrteiliger Grubenstempel

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