FR1151305A - étançon, en particulier pour l'utilisation dans les mines de charbon - Google Patents

étançon, en particulier pour l'utilisation dans les mines de charbon

Info

Publication number
FR1151305A
FR1151305A FR1151305DA FR1151305A FR 1151305 A FR1151305 A FR 1151305A FR 1151305D A FR1151305D A FR 1151305DA FR 1151305 A FR1151305 A FR 1151305A
Authority
FR
France
Prior art keywords
prop
coal mines
mines
coal
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.)
Mastabar Mining Equipment Co Ltd
Original Assignee
Mastabar Mining Equipment Co 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 Mastabar Mining Equipment Co Ltd filed Critical Mastabar Mining Equipment Co Ltd
Application granted granted Critical
Publication of FR1151305A publication Critical patent/FR1151305A/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
    • E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
    • E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid
    • 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
    • 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
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Emergency Lowering Means (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Control Of Presses (AREA)
  • Safety Valves (AREA)
  • Actuator (AREA)
FR1151305D 1955-06-10 1956-06-08 étançon, en particulier pour l'utilisation dans les mines de charbon Expired FR1151305A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16827/55A GB793803A (en) 1955-06-10 1955-06-10 Improvements in or relating to props, especially for use in coal mines

Publications (1)

Publication Number Publication Date
FR1151305A true FR1151305A (fr) 1958-01-29

Family

ID=10084401

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1151305D Expired FR1151305A (fr) 1955-06-10 1956-06-08 étançon, en particulier pour l'utilisation dans les mines de charbon
FR1162002D Expired FR1162002A (fr) 1955-06-10 1956-12-06 Dispositif de déclenchement réglable pour étançons hydrauliques

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR1162002D Expired FR1162002A (fr) 1955-06-10 1956-12-06 Dispositif de déclenchement réglable pour étançons hydrauliques

Country Status (5)

Country Link
US (1) US2895454A (fr)
BE (2) BE548513A (fr)
DE (2) DE1063554B (fr)
FR (2) FR1151305A (fr)
GB (2) GB793803A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894292A (en) * 1957-07-30 1962-04-18 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic props, particularly pit props
GB898987A (en) * 1960-04-19 1962-06-20 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic supports
US3112705A (en) * 1961-10-05 1963-12-03 Jane Wallen Two-speed hydraulic pumps
NL299412A (fr) * 1962-10-19
US3394634A (en) * 1966-10-21 1968-07-30 George M. Pfundt Internal relief valve for hydrauli cally actuated pole pullers
US3476019A (en) * 1967-09-08 1969-11-04 Berg Mfg & Sales Co Air-assisted emergency spring brake assembly
FR2976058B1 (fr) 2011-05-30 2013-07-05 Prestige Solaire Systeme motorise d'entrainement en rotation pour un systeme de support suiveur pour capteur solaire
CN111594235B (zh) * 2020-04-22 2021-06-18 山东科技大学 一种缓冲式矿用支护设备及支护方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618122A (en) * 1946-04-18 1952-11-18 Gratzmuller Jean Louis Telescopic hydraulic jack
GB636568A (en) * 1953-07-20 1950-05-03 George Herbert Dowty Improvements in pit props and other telescopic struts
BE486663A (fr) * 1948-01-12
GB640414A (en) * 1948-03-06 1950-07-19 Mavor & Coulson Ltd Improvements in props
DE928945C (de) * 1951-06-09 1955-06-16 Eisenwerk Wanheim G M B H Verstellbarer hydraulischer Grubenstempel
GB700790A (en) * 1951-07-19 1953-12-09 Dowty Auto Units Ltd Improvements relating to valves
DE950183C (de) * 1953-02-26 1956-10-04 August Bilstein G M B H Hydraulische Hubvorrichtung, insbesondere zum Setzen von Grubenstempeln
BE532039A (fr) * 1953-09-24 1900-01-01

Also Published As

Publication number Publication date
GB802803A (en) 1958-10-15
DE1063554B (de) 1959-08-20
FR1162002A (fr) 1958-09-08
GB793803A (en) 1958-04-23
DE1064907B (de) 1959-09-10
BE553227A (fr)
BE548513A (fr)
US2895454A (en) 1959-07-21

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