FR1557454A - - Google Patents

Info

Publication number
FR1557454A
FR1557454A FR1557454DA FR1557454A FR 1557454 A FR1557454 A FR 1557454A FR 1557454D A FR1557454D A FR 1557454DA FR 1557454 A FR1557454 A FR 1557454A
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1557454A publication Critical patent/FR1557454A/fr
Expired legal-status Critical Current

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations

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)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
FR1557454D 1967-04-13 1968-03-25 Expired FR1557454A (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0061988 1967-04-13

Publications (1)

Publication Number Publication Date
FR1557454A true FR1557454A (sv) 1969-02-14

Family

ID=7230366

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1557454D Expired FR1557454A (sv) 1967-04-13 1968-03-25

Country Status (4)

Country Link
BE (1) BE712965A (sv)
DE (1) DE1533749A1 (sv)
FR (1) FR1557454A (sv)
NL (1) NL6804982A (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459925A1 (fr) * 1979-06-23 1981-01-16 Salzgitter Maschinen Ag Dispositif d'etancheite entre le tube de lavage et l'extremite d'insertion d'un appareil a percussion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2403852C3 (de) 1974-01-28 1981-01-08 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Hydraulischer Teleskopstempel für den Grubenausbau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459925A1 (fr) * 1979-06-23 1981-01-16 Salzgitter Maschinen Ag Dispositif d'etancheite entre le tube de lavage et l'extremite d'insertion d'un appareil a percussion

Also Published As

Publication number Publication date
DE1533749A1 (de) 1970-01-22
BE712965A (sv) 1968-07-31
NL6804982A (sv) 1968-10-14

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Legal Events

Date Code Title Description
ST Notification of lapse