BE416894A - - Google Patents

Info

Publication number
BE416894A
BE416894A BE416894DA BE416894A BE 416894 A BE416894 A BE 416894A BE 416894D A BE416894D A BE 416894DA BE 416894 A BE416894 A BE 416894A
Authority
BE
Belgium
Prior art keywords
piston
valve
plungers
ratchet
chamber
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE416894A publication Critical patent/BE416894A/fr

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)
  • Fluid-Pressure Circuits (AREA)
BE416894D BE416894A (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
BE416894A true BE416894A (cg-RX-API-DMAC7.html)

Family

ID=79714

Family Applications (1)

Application Number Title Priority Date Filing Date
BE416894D BE416894A (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
BE (1) BE416894A (cg-RX-API-DMAC7.html)

Similar Documents

Publication Publication Date Title
CH617117A5 (cg-RX-API-DMAC7.html)
FR2639279A1 (fr) Appareil de percussion hydraulique avec dispositif de frappe en retrait amortie
BE416894A (cg-RX-API-DMAC7.html)
EP2616623B1 (fr) Appareil rotopercutant hydraulique destiné à la perforation de trous de mine
FR2700364A1 (fr) Piston de moteur hydraulique.
BE480446A (cg-RX-API-DMAC7.html)
BE421920A (cg-RX-API-DMAC7.html)
BE389403A (cg-RX-API-DMAC7.html)
BE387335A (cg-RX-API-DMAC7.html)
FR2807691A3 (fr) Appareil portable a tetes interchangeables
BE341137A (cg-RX-API-DMAC7.html)
EP0405207A2 (fr) Dispositif d'accouplement d'une tige de perçage du trou de coulée d'un four à cuve à l'outil de travail d'une machine de perçage
JPH10148083A (ja) ボーリング用チャック装置
US2087583A (en) Throttle valve for pneumatic tools
CH597522A5 (en) Double acting actuating ram
BE473315A (cg-RX-API-DMAC7.html)
BE383715A (cg-RX-API-DMAC7.html)
BE400072A (cg-RX-API-DMAC7.html)
BE416348A (cg-RX-API-DMAC7.html)
BE435591A (cg-RX-API-DMAC7.html)
BE358433A (cg-RX-API-DMAC7.html)
BE340380A (cg-RX-API-DMAC7.html)
BE416019A (cg-RX-API-DMAC7.html)
BE449987A (cg-RX-API-DMAC7.html)
BE434336A (cg-RX-API-DMAC7.html)