DE276338C - - Google Patents

Info

Publication number
DE276338C
DE276338C DENDAT276338D DE276338DA DE276338C DE 276338 C DE276338 C DE 276338C DE NDAT276338 D DENDAT276338 D DE NDAT276338D DE 276338D A DE276338D A DE 276338DA DE 276338 C DE276338 C DE 276338C
Authority
DE
Germany
Prior art keywords
force
drilling
springs
drilling tool
spring
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.)
Active
Application number
DENDAT276338D
Other languages
German (de)
English (en)
Publication of DE276338C publication Critical patent/DE276338C/de
Active 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
    • E21B1/00—Percussion drilling
    • E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable
    • E21B1/04—Devices for reversing the movement of the rod or cable at the surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
DENDAT276338D Active DE276338C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE276338C true DE276338C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=532546

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT276338D Active DE276338C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE276338C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11679646B2 (en) * 2016-02-25 2023-06-20 Johnson Electric International AG Method for driving an actuator of an HVAC system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11679646B2 (en) * 2016-02-25 2023-06-20 Johnson Electric International AG Method for driving an actuator of an HVAC system

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