NL174285B - RACK FOR SUPPORTING STANDING PIPES IN A DRILL RIG. - Google Patents

RACK FOR SUPPORTING STANDING PIPES IN A DRILL RIG.

Info

Publication number
NL174285B
NL174285B NLAANVRAGE7400274,A NL174285DA NL174285B NL 174285 B NL174285 B NL 174285B NL 174285D A NL174285D A NL 174285DA NL 174285 B NL174285 B NL 174285B
Authority
NL
Netherlands
Prior art keywords
rack
drill rig
standing pipes
supporting standing
supporting
Prior art date
Application number
NLAANVRAGE7400274,A
Other languages
Dutch (nl)
Original Assignee
Besijn Jan Hendrik
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.)
Publication of NL174285B publication Critical patent/NL174285B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
    • H01J17/44—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes having one or more control electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
    • H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0068—Electrode systems electrode assembly with control electrodes, e.g. including a screen

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Particle Accelerators (AREA)
NLAANVRAGE7400274,A 1954-09-09 RACK FOR SUPPORTING STANDING PIPES IN A DRILL RIG. NL174285B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL776228X 1954-09-09

Publications (1)

Publication Number Publication Date
NL174285B true NL174285B (en)

Family

ID=19829993

Family Applications (3)

Application Number Title Priority Date Filing Date
NL190662D NL190662A (en) 1954-09-09
NL86357D NL86357C (en) 1954-09-09
NLAANVRAGE7400274,A NL174285B (en) 1954-09-09 RACK FOR SUPPORTING STANDING PIPES IN A DRILL RIG.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
NL190662D NL190662A (en) 1954-09-09
NL86357D NL86357C (en) 1954-09-09

Country Status (5)

Country Link
US (1) US2835806A (en)
DE (1) DE955696C (en)
FR (1) FR1130901A (en)
GB (1) GB776228A (en)
NL (3) NL174285B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681705A (en) * 1969-12-30 1972-08-01 Lewis C Spence Circuit and method for enhancement of signal-noise ratio

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2230243A (en) * 1938-06-28 1941-02-04 Philip M Haffcke Signal selection by amplitude discrimination
US2273090A (en) * 1940-02-03 1942-02-17 Rca Corp Superregenerative limiter

Also Published As

Publication number Publication date
NL190662A (en)
GB776228A (en) 1957-06-05
DE955696C (en) 1957-01-10
NL86357C (en)
US2835806A (en) 1958-05-20
FR1130901A (en) 1957-02-13

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