FR1171567A - Electronic flagger - Google Patents

Electronic flagger

Info

Publication number
FR1171567A
FR1171567A FR1171567DA FR1171567A FR 1171567 A FR1171567 A FR 1171567A FR 1171567D A FR1171567D A FR 1171567DA FR 1171567 A FR1171567 A FR 1171567A
Authority
FR
France
Prior art keywords
flagger
electronic
electronic flagger
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
Pierre Jeanlin
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
Application granted granted Critical
Publication of FR1171567A publication Critical patent/FR1171567A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
    • G01F23/243—Schematic arrangements of probes combined with measuring circuits
    • G01F23/244—Schematic arrangements of probes combined with measuring circuits comprising oscillating circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
FR1171567D 1957-02-04 1957-02-04 Electronic flagger Expired FR1171567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1171567T 1957-02-04

Publications (1)

Publication Number Publication Date
FR1171567A true FR1171567A (en) 1959-01-28

Family

ID=9657607

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1171567D Expired FR1171567A (en) 1957-02-04 1957-02-04 Electronic flagger

Country Status (1)

Country Link
FR (1) FR1171567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470478A1 (en) * 1979-11-21 1981-05-29 Omera Segid ELECTRONIC SECURITY MEMORY USABLE IN RAIL SIGNALING

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470478A1 (en) * 1979-11-21 1981-05-29 Omera Segid ELECTRONIC SECURITY MEMORY USABLE IN RAIL SIGNALING
EP0029631A1 (en) * 1979-11-21 1981-06-03 Societe D'optique, De Mecanique D'electricite Et De Radio O.M.E.R.A. - S.E.G.I.D. Electronic fail-safe memory usable in railway signalling

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