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FR970848A - Anti-recoil device - Google Patents

Anti-recoil device

Info

Publication number
FR970848A
FR970848A FR970848DA FR970848A FR 970848 A FR970848 A FR 970848A FR 970848D A FR970848D A FR 970848DA FR 970848 A FR970848 A FR 970848A
Authority
FR
France
Prior art keywords
recoil device
recoil
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)
Inventor
Miroslav Koun
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.)
Vitkovicke Zelezarny Klementa Gottwalda np
Original Assignee
Vitkovicke Zelezarny Klementa Gottwalda np
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 Vitkovicke Zelezarny Klementa Gottwalda np filed Critical Vitkovicke Zelezarny Klementa Gottwalda np
Application granted granted Critical
Publication of FR970848A publication Critical patent/FR970848A/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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02—Automatic control of the tool feed
    • E21B44/08—Automatic control of the tool feed in response to the amplitude of the movement of the percussion tool, e.g. jump or recoil

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)
FR970848D 1947-08-26 1948-08-24 Anti-recoil device Expired FR970848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS970848X 1947-08-26

Publications (1)

Publication Number Publication Date
FR970848A true FR970848A (en) 1951-01-09

Family

ID=5456775

Family Applications (1)

Application Number Title Priority Date Filing Date
FR970848D Expired FR970848A (en) 1947-08-26 1948-08-24 Anti-recoil device

Country Status (1)

Country Link
FR (1) FR970848A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556259A (en) * 1969-03-13 1971-01-19 Valentine E Macy Jr Fail-safe brake with elastomeric actuator
US4132129A (en) * 1977-06-03 1979-01-02 Raytheon Company Wedge lock knob assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556259A (en) * 1969-03-13 1971-01-19 Valentine E Macy Jr Fail-safe brake with elastomeric actuator
US4132129A (en) * 1977-06-03 1979-01-02 Raytheon Company Wedge lock knob assembly

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