CH274399A - Thermal contact for automatic fire alarm systems. - Google Patents

Thermal contact for automatic fire alarm systems.

Info

Publication number
CH274399A
CH274399A CH274399DA CH274399A CH 274399 A CH274399 A CH 274399A CH 274399D A CH274399D A CH 274399DA CH 274399 A CH274399 A CH 274399A
Authority
CH
Switzerland
Prior art keywords
thermal contact
fire alarm
automatic fire
alarm systems
systems
Prior art date
Application number
Other languages
German (de)
Inventor
Harald Ekman Olof Ingemar
Original Assignee
Harald Ekman Olof Ingemar
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 Harald Ekman Olof Ingemar filed Critical Harald Ekman Olof Ingemar
Publication of CH274399A publication Critical patent/CH274399A/en

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
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • 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
    • 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
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/11—Tripping mechanism

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fuses (AREA)
CH274399D 1947-10-14 1949-04-01 Thermal contact for automatic fire alarm systems. CH274399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2599441X 1947-10-14

Publications (1)

Publication Number Publication Date
CH274399A true CH274399A (en) 1951-03-31

Family

ID=32232359

Family Applications (1)

Application Number Title Priority Date Filing Date
CH274399D CH274399A (en) 1947-10-14 1949-04-01 Thermal contact for automatic fire alarm systems.

Country Status (4)

Country Link
US (1) US2599441A (en)
CH (1) CH274399A (en)
DE (1) DE895576C (en)
NL (1) NL74214C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921167A (en) * 1958-06-04 1960-01-12 Stevens Mfg Co Inc Fuse
GB961145A (en) * 1960-08-17 1964-06-17 John Emery Lindberg Fire detection systems
US3324464A (en) * 1964-05-11 1967-06-06 Electronic Assistance Corp Fire alarms
DE1228968B (en) * 1965-03-08 1966-11-17 Interstate Engineering Corp Triggering device for a fire alarm
US4169999A (en) * 1977-11-01 1979-10-02 Sangamo Weston, Inc. Thermal-magnetic switch
DE19605187A1 (en) * 1996-02-13 1997-08-14 Braun Ag Safety device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE374951C (en) * 1923-05-03 Johann Beck Automatic fire alarm with a bolt that is pushed forward by spring force when a melting body is softened to close an electrical alarm contact
US421852A (en) * 1890-02-18 Thermostat
US643179A (en) * 1899-03-28 1900-02-13 Edward F Woodman Thermostatic apparatus.
US721451A (en) * 1901-07-27 1903-02-24 United Pneumatic Fire Alarm Telegraph Company Thermostat.
US2138509A (en) * 1932-04-29 1938-11-29 Ranco Inc Multiple control switch
DE691767C (en) * 1935-05-11 1940-06-05 Lorenz Akt Ges C Fusible link detector
DE675388C (en) * 1937-10-29 1939-05-08 Metzenauer & Jung Fire protection with melting strips
US2457941A (en) * 1945-03-16 1949-01-04 Ericsson Telefon Ab L M Thermocontact

Also Published As

Publication number Publication date
NL74214C (en) 1953-10-15
US2599441A (en) 1952-06-03
DE895576C (en) 1953-11-05

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