FR867860A - Percussion device with ram set in motion under the interposition of a spring - Google Patents

Percussion device with ram set in motion under the interposition of a spring

Info

Publication number
FR867860A
FR867860A FR867860DA FR867860A FR 867860 A FR867860 A FR 867860A FR 867860D A FR867860D A FR 867860DA FR 867860 A FR867860 A FR 867860A
Authority
FR
France
Prior art keywords
interposition
spring
motion under
percussion device
ram set
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
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of FR867860A publication Critical patent/FR867860A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR867860D 1938-09-28 1940-11-30 Percussion device with ram set in motion under the interposition of a spring Expired FR867860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE867860X 1938-09-28

Publications (1)

Publication Number Publication Date
FR867860A true FR867860A (en) 1941-12-02

Family

ID=6802222

Family Applications (1)

Application Number Title Priority Date Filing Date
FR867860D Expired FR867860A (en) 1938-09-28 1940-11-30 Percussion device with ram set in motion under the interposition of a spring

Country Status (1)

Country Link
FR (1) FR867860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968031C (en) * 1953-04-30 1958-01-09 Hwf Hartmetall Werkzeug Fabrik Vibration rotary drilling machine for hard rock or the like with a drill rod set in vibration by a crank drive with the interposition of springs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968031C (en) * 1953-04-30 1958-01-09 Hwf Hartmetall Werkzeug Fabrik Vibration rotary drilling machine for hard rock or the like with a drill rod set in vibration by a crank drive with the interposition of springs

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