FR474993A - Improvements to electrical alarm signals - Google Patents

Improvements to electrical alarm signals

Info

Publication number
FR474993A
FR474993A FR474993DA FR474993A FR 474993 A FR474993 A FR 474993A FR 474993D A FR474993D A FR 474993DA FR 474993 A FR474993 A FR 474993A
Authority
FR
France
Prior art keywords
alarm signals
electrical alarm
electrical
signals
alarm
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
Joseph Banneyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of FR474993A publication Critical patent/FR474993A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
FR474993D 1914-07-11 1914-07-11 Improvements to electrical alarm signals Expired FR474993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR474993T 1914-07-11

Publications (1)

Publication Number Publication Date
FR474993A true FR474993A (en) 1915-03-29

Family

ID=1512920

Family Applications (1)

Application Number Title Priority Date Filing Date
FR474993D Expired FR474993A (en) 1914-07-11 1914-07-11 Improvements to electrical alarm signals

Country Status (1)

Country Link
FR (1) FR474993A (en)

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