FR2048819A5 - - Google Patents

Info

Publication number
FR2048819A5
FR2048819A5 FR7019139A FR7019139A FR2048819A5 FR 2048819 A5 FR2048819 A5 FR 2048819A5 FR 7019139 A FR7019139 A FR 7019139A FR 7019139 A FR7019139 A FR 7019139A FR 2048819 A5 FR2048819 A5 FR 2048819A5
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
FR7019139A
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Application granted granted Critical
Publication of FR2048819A5 publication Critical patent/FR2048819A5/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Multiple-Way Valves (AREA)
FR7019139A 1969-05-28 1970-05-26 Expired FR2048819A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2687269 1969-05-28

Publications (1)

Publication Number Publication Date
FR2048819A5 true FR2048819A5 (fr) 1971-03-19

Family

ID=10250546

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7019139A Expired FR2048819A5 (fr) 1969-05-28 1970-05-26

Country Status (7)

Country Link
US (1) US3661056A (fr)
JP (1) JPS5126362B1 (fr)
CA (1) CA919925A (fr)
FR (1) FR2048819A5 (fr)
GB (1) GB1295079A (fr)
PL (1) PL72769B1 (fr)
ZA (1) ZA703511B (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2128878A (en) * 1935-03-22 1938-08-30 Trico Products Corp Windshield cleaner control mechanism
US2202422A (en) * 1937-08-02 1940-05-28 Addison C Hoof Remote control for governors
DE1201286B (de) * 1965-01-21 1965-09-23 Gewerk Eisenhuette Westfalia Rueckbarer hydraulischer Strebausbau
US3289625A (en) * 1965-04-21 1966-12-06 Stanley King N Boat hull drain assembly
JPS441196Y1 (fr) * 1965-06-01 1969-01-17
US3405567A (en) * 1967-03-01 1968-10-15 Morse Controls Inc Selective vernier control

Also Published As

Publication number Publication date
PL72769B1 (fr) 1974-08-30
GB1295079A (fr) 1972-11-01
DE2025293A1 (fr) 1972-03-09
ZA703511B (en) 1971-01-27
US3661056A (en) 1972-05-09
JPS5126362B1 (fr) 1976-08-06
CA919925A (en) 1973-01-30

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Legal Events

Date Code Title Description
ST Notification of lapse