[go: up one dir, main page]

FR1420281A - Mobile set of support devices in mines, and valve for controlling the movement of these devices - Google Patents

Mobile set of support devices in mines, and valve for controlling the movement of these devices

Info

Publication number
FR1420281A
FR1420281A FR1638A FR1638A FR1420281A FR 1420281 A FR1420281 A FR 1420281A FR 1638 A FR1638 A FR 1638A FR 1638 A FR1638 A FR 1638A FR 1420281 A FR1420281 A FR 1420281A
Authority
FR
France
Prior art keywords
devices
mines
valve
controlling
movement
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
FR1638A
Other languages
French (fr)
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Application granted granted Critical
Publication of FR1420281A publication Critical patent/FR1420281A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
FR1638A 1964-01-14 1965-01-12 Mobile set of support devices in mines, and valve for controlling the movement of these devices Expired FR1420281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1659/64A GB1032021A (en) 1964-01-14 1964-01-14 Advanceable roof support assembly

Publications (1)

Publication Number Publication Date
FR1420281A true FR1420281A (en) 1965-12-03

Family

ID=9725813

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1638A Expired FR1420281A (en) 1964-01-14 1965-01-12 Mobile set of support devices in mines, and valve for controlling the movement of these devices

Country Status (4)

Country Link
US (1) US3301136A (en)
DE (1) DE1279582B (en)
FR (1) FR1420281A (en)
GB (1) GB1032021A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6600072A (en) * 1966-01-04 1967-07-05
US3672257A (en) * 1969-03-17 1972-06-27 Tadano Tekkosho Kk Extension means of a multi-stage boom
DE2038663C3 (en) * 1970-08-04 1984-05-03 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic control device for relocatable expansion units in the form of frames, trestles and the like.
US3709100A (en) * 1971-06-11 1973-01-09 Caterpillar Tractor Co Hydraulic implement control circuit
GB1571503A (en) * 1976-01-24 1980-07-16 Dowty Mining Equipment Ltd Longwall mining apparatus
DE2700829C2 (en) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic extension control
DE2830510C3 (en) * 1978-07-12 1981-07-23 Bergwerksverband Gmbh, 4300 Essen Method and valve arrangement for setting the stamps of a walking support
IT1144292B (en) * 1981-07-09 1986-10-29 Fiat Allis Macch Movi MANUALLY OPERATED HYDRAULIC DEVICE FOR THE CONTROL OF A HYDRAULIC DISTRIBUTOR
GB2116618B (en) * 1982-03-06 1985-11-20 Dowty Mining Equipment Ltd Mine roof supports
US4530376A (en) * 1983-09-19 1985-07-23 Dresser Industries, Inc. Pilot valve including a hydraulically actuated detent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322611A (en) * 1940-04-27 1943-06-22 Bruno E Winkler Welding gun
US2689585A (en) * 1952-06-23 1954-09-21 Bendix Aviat Corp Self-holding valve
DE1131626B (en) * 1958-04-14 1962-06-20 Kloeckner Werke Ag Method and device for controlling the robbery and setting process of hydraulic longwall construction frames
FR1271386A (en) * 1959-10-12 1961-09-08 Coal Industry Patents Ltd Roof supports for mining galleries
US3115067A (en) * 1961-09-11 1963-12-24 Kelsey Hayes Co Power brake for motor vehicles
GB1046269A (en) * 1963-09-03 1966-10-19 Dowty Mining Equipment Ltd Advanceable roof support assembly

Also Published As

Publication number Publication date
GB1032021A (en) 1966-06-08
US3301136A (en) 1967-01-31
DE1279582B (en) 1968-10-10

Similar Documents

Publication Publication Date Title
FR1445102A (en) Alignment device for prosthetic devices
FR1420281A (en) Mobile set of support devices in mines, and valve for controlling the movement of these devices
FR1421838A (en) Sealing set for mixing valves
FR1476046A (en) Device for controlling the movement of rotating devices
CH409691A (en) Tilting door
CH464083A (en) Exhaust device for watch movement
FR1427115A (en) Oscillating assembly for watch movement
FR1426021A (en) Spring-damped tilting assembly for coulter plows
FR1419877A (en) Bearing for rectilinear movement
FR1438983A (en) Device for pivoting a mobile, in particular a mobile for a clockwork movement
FR1385098A (en) Device for turning continuous webs in motion
FR1395851A (en) Tilting door
AT258158B (en) Opening device for tilt and swivel sash
FR1399839A (en) Drive device for lifting devices and the like
FR1492802A (en) Device for the support, support, immobilization of limbs
FR1359752A (en) Support roller device for slabs
FR1402726A (en) Device for molding concrete panels
FR1422988A (en) Double hinge for supporting and maintaining open position of mobile panels
FR93271E (en) Suspension device for the clockwork movement.
FR1401668A (en) Adsorption device
CH450294A (en) Clockwork movement
FR1414072A (en) Mobile irrigation devices
FR1398433A (en) Improvements in support devices for mines
CA696524A (en) Bathtub support device
FR1415079A (en) Improvements made in the construction of draining devices