FR965222A - - Google Patents

Info

Publication number
FR965222A
FR965222A FR965222DA FR965222A FR 965222 A FR965222 A FR 965222A FR 965222D A FR965222D A FR 965222DA FR 965222 A FR965222 A FR 965222A
Authority
FR
France
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)
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.)
Publication date
Application granted granted Critical
Publication of FR965222A publication Critical patent/FR965222A/fr
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
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
    • 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
    • E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
    • 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
    • E21D15/50—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
    • E21D15/512—Arrangement of valves
FR965222D 1947-04-24 Expired FR965222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10974/47A GB641894A (en) 1947-04-24 1947-04-24 Improvements in or relating to pit-props

Publications (1)

Publication Number Publication Date
FR965222A true FR965222A (en) 1950-09-06

Family

ID=9977734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR965222D Expired FR965222A (en) 1947-04-24

Country Status (4)

Country Link
US (1) US2474464A (en)
BE (1) BE482083A (en)
FR (1) FR965222A (en)
GB (1) GB641894A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068200B (en) * 1959-11-05
US2721051A (en) * 1949-04-07 1955-10-18 Lobbe Armin Hydraulic pit props
NL152226B (en) * 1949-04-07 Glaverbel METHOD AND APPARATUS FOR MANUFACTURING FLAT GLASS, IN ADDITION TO FLAT GLASS MANUFACTURED USING THIS METHOD.
US2695764A (en) * 1949-10-01 1954-11-30 Grebe Konrad Mine prop
US2830563A (en) * 1954-03-26 1958-04-15 Burton B Burckhalter Automatic jack leg
DE1131625B (en) * 1955-08-13 1962-06-20 Kronprinz Ag Hydraulic pit ram
DE1127841B (en) * 1955-08-13 1962-04-19 Kronprinz Ag Hydraulic pit ram
US2973178A (en) * 1956-10-29 1961-02-28 Schwarz Hermann Kg Two-part metallic mine prop
BE570316A (en) * 1957-08-13
US3463559A (en) * 1967-02-20 1969-08-26 Int Harvester Co Hydraulic track adjuster for tractor
US4142449A (en) * 1976-02-03 1979-03-06 Thyssen Industrie Ag Hydraulic mine prop
DE202004012138U1 (en) * 2004-08-02 2004-10-07 Dbt Gmbh Stamp head storage between cap and stamp of a shield removal frame
AU2013206571A1 (en) * 2012-08-17 2014-03-06 Mine Support Products (Pty) Ltd Prop
CN103670459B (en) * 2013-11-30 2015-08-05 河北工业大学 A kind of hydraulic prop for mine pressure real-time monitor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US752201A (en) * 1904-02-16 Fluid-pressure jack
US1418336A (en) * 1919-01-13 1922-06-06 Harold I Stage Pneumatic drill column
US1744673A (en) * 1927-06-10 1930-01-21 Timothy C Pomeroy Hydraulic jack

Also Published As

Publication number Publication date
BE482083A (en)
GB641894A (en) 1950-08-23
US2474464A (en) 1949-06-28

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