FR521240A - Tool rotary pneumatic hammer - Google Patents

Tool rotary pneumatic hammer

Info

Publication number
FR521240A
FR521240A FR521240A FR521240DA FR521240A FR 521240 A FR521240 A FR 521240A FR 521240 A FR521240 A FR 521240A FR 521240D A FR521240D A FR 521240DA FR 521240 A FR521240 A FR 521240A
Authority
FR
France
Prior art keywords
pneumatic hammer
rotary pneumatic
tool rotary
tool
hammer
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
FR521240A
Other languages
French (fr)
Inventor
Ernesto Curti
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR521240A publication Critical patent/FR521240A/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
    • E21B6/08—Separate drives for percussion and rotation

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)
FR521240A 1919-08-21 1920-07-27 Tool rotary pneumatic hammer Expired FR521240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT521240X 1919-08-21

Publications (1)

Publication Number Publication Date
FR521240A true FR521240A (en) 1921-07-08

Family

ID=11276405

Family Applications (1)

Application Number Title Priority Date Filing Date
FR521240A Expired FR521240A (en) 1919-08-21 1920-07-27 Tool rotary pneumatic hammer

Country Status (1)

Country Link
FR (1) FR521240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941367A (en) * 1957-04-30 1960-06-21 Schwab Charles John Pressure transmitting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941367A (en) * 1957-04-30 1960-06-21 Schwab Charles John Pressure transmitting device

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