FR2382600B1 - - Google Patents

Info

Publication number
FR2382600B1
FR2382600B1 FR7806034A FR7806034A FR2382600B1 FR 2382600 B1 FR2382600 B1 FR 2382600B1 FR 7806034 A FR7806034 A FR 7806034A FR 7806034 A FR7806034 A FR 7806034A FR 2382600 B1 FR2382600 B1 FR 2382600B1
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
FR7806034A
Other languages
French (fr)
Other versions
FR2382600A1 (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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19772708929 external-priority patent/DE2708929B2/en
Priority claimed from DE19772728226 external-priority patent/DE2728226A1/en
Application filed by Individual filed Critical Individual
Publication of FR2382600A1 publication Critical patent/FR2382600A1/en
Application granted granted Critical
Publication of FR2382600B1 publication Critical patent/FR2382600B1/fr
Granted 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
    • 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
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Sealing Devices (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
FR7806034A 1977-03-02 1978-03-02 HYDRAULIC CYLINDER OR SEAL INTENDED TO BE USED IN A VERY CORROSIVE ENVIRONMENT Granted FR2382600A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772708929 DE2708929B2 (en) 1977-03-02 1977-03-02 Telescopic ram for underground shield support
DE19772728226 DE2728226A1 (en) 1977-06-23 1977-06-23 Prop or support e.g. telescopic jack in crawler for mine-shaft - has cylinders lined with an anticorrosive metal

Publications (2)

Publication Number Publication Date
FR2382600A1 FR2382600A1 (en) 1978-09-29
FR2382600B1 true FR2382600B1 (en) 1984-03-30

Family

ID=25771678

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806034A Granted FR2382600A1 (en) 1977-03-02 1978-03-02 HYDRAULIC CYLINDER OR SEAL INTENDED TO BE USED IN A VERY CORROSIVE ENVIRONMENT

Country Status (5)

Country Link
JP (1) JPS53107547A (en)
FR (1) FR2382600A1 (en)
GB (1) GB1592090A (en)
HU (1) HU179571B (en)
PL (1) PL117774B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522082B1 (en) * 1982-02-20 1988-02-12 Festo Maschf Stoll G PNEUMATIC OR HYDRAULIC CYLINDER
CN108994606A (en) * 2018-07-27 2018-12-14 田洪志 A kind of hydraulic prop flexible automation assembly control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640104C3 (en) * 1976-09-07 1979-03-08 Herbert 5000 Koeln Friebe Pit stamp

Also Published As

Publication number Publication date
PL204999A1 (en) 1978-11-06
GB1592090A (en) 1981-07-01
PL117774B1 (en) 1981-08-31
FR2382600A1 (en) 1978-09-29
JPS53107547A (en) 1978-09-19
HU179571B (en) 1982-11-29

Similar Documents

Publication Publication Date Title
FR2377419B1 (en)
DE2855742C2 (en)
DE2839633C2 (en)
FR2382600B1 (en)
DK140951C (en)
BG25837A1 (en)
CH614741A5 (en)
BG26494A1 (en)
BG25828A1 (en)
BG26016A1 (en)
BG25860A1 (en)
BG25855A1 (en)
BG25853A1 (en)
BG25852A1 (en)
BG25851A1 (en)
BE873002A (en)
BG25848A1 (en)
BG25847A1 (en)
BG25845A1 (en)
BG25844A1 (en)
BG25841A1 (en)
BG25840A1 (en)
BG25826A1 (en)
BG25838A1 (en)
BG23462A1 (en)

Legal Events

Date Code Title Description
ST Notification of lapse