FR2278950B1 - - Google Patents

Info

Publication number
FR2278950B1
FR2278950B1 FR7425223A FR7425223A FR2278950B1 FR 2278950 B1 FR2278950 B1 FR 2278950B1 FR 7425223 A FR7425223 A FR 7425223A FR 7425223 A FR7425223 A FR 7425223A FR 2278950 B1 FR2278950 B1 FR 2278950B1
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
FR7425223A
Other languages
French (fr)
Other versions
FR2278950A1 (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.)
Lenoir & Mernier
Original Assignee
Lenoir & Mernier
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 Lenoir & Mernier filed Critical Lenoir & Mernier
Priority to FR7425223A priority Critical patent/FR2278950A1/en
Publication of FR2278950A1 publication Critical patent/FR2278950A1/en
Application granted granted Critical
Publication of FR2278950B1 publication Critical patent/FR2278950B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/1235—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber the movement of the pump piston in the two directions being obtained by two single-acting piston fluid motors, each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L33/00—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution
    • F01L33/04—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution oscillatory

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
FR7425223A 1974-07-19 1974-07-19 Grouting pit-props in rock tunnels and mines - with device using compressed air cylinders to inject grouting into holes Granted FR2278950A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7425223A FR2278950A1 (en) 1974-07-19 1974-07-19 Grouting pit-props in rock tunnels and mines - with device using compressed air cylinders to inject grouting into holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7425223A FR2278950A1 (en) 1974-07-19 1974-07-19 Grouting pit-props in rock tunnels and mines - with device using compressed air cylinders to inject grouting into holes

Publications (2)

Publication Number Publication Date
FR2278950A1 FR2278950A1 (en) 1976-02-13
FR2278950B1 true FR2278950B1 (en) 1978-02-17

Family

ID=9141504

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425223A Granted FR2278950A1 (en) 1974-07-19 1974-07-19 Grouting pit-props in rock tunnels and mines - with device using compressed air cylinders to inject grouting into holes

Country Status (1)

Country Link
FR (1) FR2278950A1 (en)

Also Published As

Publication number Publication date
FR2278950A1 (en) 1976-02-13

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse