FR80004E - Perfectionnements aux machines d'extraction minières - Google Patents

Perfectionnements aux machines d'extraction minières

Info

Publication number
FR80004E
FR80004E FR857081A FR857081A FR80004E FR 80004 E FR80004 E FR 80004E FR 857081 A FR857081 A FR 857081A FR 857081 A FR857081 A FR 857081A FR 80004 E FR80004 E FR 80004E
Authority
FR
France
Prior art keywords
mining machinery
mining
machinery
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
FR857081A
Other languages
English (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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to FR857081A priority Critical patent/FR80004E/fr
Application granted granted Critical
Publication of FR80004E publication Critical patent/FR80004E/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR857081A 1961-03-28 1961-03-28 Perfectionnements aux machines d'extraction minières Expired FR80004E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR857081A FR80004E (fr) 1961-03-28 1961-03-28 Perfectionnements aux machines d'extraction minières

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR857081A FR80004E (fr) 1961-03-28 1961-03-28 Perfectionnements aux machines d'extraction minières

Publications (1)

Publication Number Publication Date
FR80004E true FR80004E (fr) 1963-03-01

Family

ID=8751900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR857081A Expired FR80004E (fr) 1961-03-28 1961-03-28 Perfectionnements aux machines d'extraction minières

Country Status (1)

Country Link
FR (1) FR80004E (fr)

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