CH267828A - Temperature switch for fire alarm systems. - Google Patents

Temperature switch for fire alarm systems.

Info

Publication number
CH267828A
CH267828A CH267828DA CH267828A CH 267828 A CH267828 A CH 267828A CH 267828D A CH267828D A CH 267828DA CH 267828 A CH267828 A CH 267828A
Authority
CH
Switzerland
Prior art keywords
fire alarm
temperature switch
alarm systems
systems
switch
Prior art date
Application number
Other languages
German (de)
Inventor
Aktieselskab Dans Telefonalarm
Original Assignee
Dansk Telefonalarm Aktieselska
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 Dansk Telefonalarm Aktieselska filed Critical Dansk Telefonalarm Aktieselska
Publication of CH267828A publication Critical patent/CH267828A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/56—Thermally-sensitive members actuated due to deflection of bimetallic element having spirally wound or helically wound bimetallic element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
    • G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
    • G01K3/12—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature based upon expansion or contraction of materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
    • G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
    • G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
CH267828D 1945-04-13 1948-01-06 Temperature switch for fire alarm systems. CH267828A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK267828X 1945-04-13
DK230146X 1946-01-23
DK250446X 1946-04-25

Publications (1)

Publication Number Publication Date
CH267828A true CH267828A (en) 1950-04-15

Family

ID=27222197

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267828D CH267828A (en) 1945-04-13 1948-01-06 Temperature switch for fire alarm systems.

Country Status (4)

Country Link
CH (1) CH267828A (en)
DE (1) DE848463C (en)
FR (1) FR958043A (en)
NL (1) NL70565C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698890A (en) * 1951-07-09 1955-01-04 Edward H Hughes Automatic fire alarm
DE957554C (en) * 1953-09-13 1957-02-07 Otto Ramstetter Dipl Ing Temperature monitoring device

Also Published As

Publication number Publication date
FR958043A (en) 1950-03-02
NL70565C (en)
DE848463C (en) 1952-09-04

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