BE532039A - - Google Patents

Info

Publication number
BE532039A
BE532039A BE532039DA BE532039A BE 532039 A BE532039 A BE 532039A BE 532039D A BE532039D A BE 532039DA BE 532039 A BE532039 A BE 532039A
Authority
BE
Belgium
Application number
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
Publication of BE532039A publication Critical patent/BE532039A/xx

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
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E21D15/155—Built-in cleaning devices
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87378—Second valve assembly carried by first valve head

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)
  • Reciprocating Pumps (AREA)
  • Chairs Characterized By Structure (AREA)
  • Safety Valves (AREA)
  • Massaging Devices (AREA)
BE532039D 1953-09-24 BE532039A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26349/53A GB748374A (en) 1953-09-24 1953-09-24 Improvements in hydraulic pit props

Publications (1)

Publication Number Publication Date
BE532039A true BE532039A (enrdf_load_html_response) 1900-01-01

Family

ID=10242283

Family Applications (1)

Application Number Title Priority Date Filing Date
BE532039D BE532039A (enrdf_load_html_response) 1953-09-24

Country Status (6)

Country Link
US (1) US2713773A (enrdf_load_html_response)
BE (1) BE532039A (enrdf_load_html_response)
DE (1) DE977481C (enrdf_load_html_response)
FR (1) FR1113337A (enrdf_load_html_response)
GB (1) GB748374A (enrdf_load_html_response)
NL (2) NL92057C (enrdf_load_html_response)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553227A (enrdf_load_html_response) * 1955-06-10
DE1127841B (de) * 1955-08-13 1962-04-19 Kronprinz Ag Hydraulischer Grubenstempel
BE553228A (enrdf_load_html_response) * 1955-12-08
BE550997A (enrdf_load_html_response) * 1956-03-07
US2975803A (en) * 1956-04-19 1961-03-21 Blackhawk Mfg Co Pressure release and relief valve
DE1081848B (de) * 1956-06-28 1960-05-19 Becorit Grubenausbau Gmbh Hydraulischer Grubenstempel
GB894292A (en) * 1957-07-30 1962-04-18 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic props, particularly pit props
NL233516A (enrdf_load_html_response) * 1958-11-24 1965-06-25
GB962542A (en) * 1959-08-21 1964-07-01 Acrow Eng Ltd Improvements in and relating to hydraulic props
GB975826A (en) * 1961-01-31 1964-11-18 Dowty Mining Equipment Ltd Improvements relating to fluid flow control valves
GB2069048B (en) * 1980-01-21 1984-06-06 Commercial Shearing Longwall jacks
USRE40131E1 (en) * 1996-10-04 2008-03-04 Jones Charles W Stereographic book

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE553221C (de) * 1932-06-24 Matthias Rehse Kolbentiefpumpe
US947613A (en) * 1910-01-25 Bethlehem Steel Corp Hydraulic jack.
US1047007A (en) * 1912-02-02 1912-12-10 William J Drugan Hydraulic jack.
US1080062A (en) * 1912-02-17 1913-12-02 Bethlehem Steel Corp Pump mechanism for hydraulic jacks and like apparatus.
BE486663A (enrdf_load_html_response) * 1948-01-12
GB640414A (en) * 1948-03-06 1950-07-19 Mavor & Coulson Ltd Improvements in props
DE943391C (de) * 1951-09-21 1956-05-17 Max Ehmke Pumpe mit Druckmittelantrieb

Also Published As

Publication number Publication date
DE977481C (de) 1966-08-18
FR1113337A (fr) 1956-03-28
NL191038A (enrdf_load_html_response) 1900-01-01
GB748374A (en) 1956-05-02
NL92057C (enrdf_load_html_response) 1900-01-01
US2713773A (en) 1955-07-26

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