DE144020C - - Google Patents

Info

Publication number
DE144020C
DE144020C DENDAT144020D DE144020DA DE144020C DE 144020 C DE144020 C DE 144020C DE NDAT144020 D DENDAT144020 D DE NDAT144020D DE 144020D A DE144020D A DE 144020DA DE 144020 C DE144020 C DE 144020C
Authority
DE
Germany
Prior art keywords
mercury
glass tube
melting
drop
plug
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
DENDAT144020D
Other languages
German (de)
English (en)
Publication of DE144020C publication Critical patent/DE144020C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/06—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fuses (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
DENDAT144020D Active DE144020C (https=)

Publications (1)

Publication Number Publication Date
DE144020C true DE144020C (https=)

Family

ID=411481

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT144020D Active DE144020C (https=)

Country Status (1)

Country Link
DE (1) DE144020C (https=)

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