NL71840C - - Google Patents

Info

Publication number
NL71840C
NL71840C NL116952A NL116952A NL71840C NL 71840 C NL71840 C NL 71840C NL 116952 A NL116952 A NL 116952A NL 116952 A NL116952 A NL 116952A NL 71840 C NL71840 C NL 71840C
Authority
NL
Netherlands
Application number
NL116952A
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 filed Critical
Priority to NL116952A priority Critical patent/NL71840C/xx
Priority to NL116952D priority patent/NL116952B/xx
Application granted granted Critical
Publication of NL71840C publication Critical patent/NL71840C/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/064—Means for driving the impulse member using an electromagnetic drive
    • 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
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/22—Percussion drilling with a reciprocating impulse member driven by electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
NL116952A 1944-05-23 1944-05-23 NL71840C (enrdf_load_html_response)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL116952A NL71840C (enrdf_load_html_response) 1944-05-23 1944-05-23
NL116952D NL116952B (enrdf_load_html_response) 1944-05-23 1944-05-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL116952A NL71840C (enrdf_load_html_response) 1944-05-23 1944-05-23

Publications (1)

Publication Number Publication Date
NL71840C true NL71840C (enrdf_load_html_response) 1953-02-17

Family

ID=1823252

Family Applications (2)

Application Number Title Priority Date Filing Date
NL116952D NL116952B (enrdf_load_html_response) 1944-05-23 1944-05-23
NL116952A NL71840C (enrdf_load_html_response) 1944-05-23 1944-05-23

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL116952D NL116952B (enrdf_load_html_response) 1944-05-23 1944-05-23

Country Status (1)

Country Link
NL (2) NL116952B (enrdf_load_html_response)

Also Published As

Publication number Publication date
NL116952B (enrdf_load_html_response) 1952-10-15

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