CH460594A - Fire alarm with a field effect transistor protected against contact - Google Patents

Fire alarm with a field effect transistor protected against contact

Info

Publication number
CH460594A
CH460594A CH1120067A CH1120067A CH460594A CH 460594 A CH460594 A CH 460594A CH 1120067 A CH1120067 A CH 1120067A CH 1120067 A CH1120067 A CH 1120067A CH 460594 A CH460594 A CH 460594A
Authority
CH
Switzerland
Prior art keywords
field effect
effect transistor
fire alarm
protected against
against contact
Prior art date
Application number
CH1120067A
Other languages
German (de)
Inventor
Andreas Dr Scheidweiler
Kuhn Max
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Priority to CH1120067A priority Critical patent/CH460594A/en
Priority to SE08863/68A priority patent/SE333696B/xx
Priority to DE19681766669 priority patent/DE1766669B1/en
Priority to DE6603864U priority patent/DE6603864U/en
Priority to FR1575250D priority patent/FR1575250A/fr
Priority to US749166A priority patent/US3590321A/en
Publication of CH460594A publication Critical patent/CH460594A/en
Priority to NL6811153.A priority patent/NL160101C/en
Priority to GB38248/68A priority patent/GB1192298A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
CH1120067A 1967-08-09 1967-08-09 Fire alarm with a field effect transistor protected against contact CH460594A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH1120067A CH460594A (en) 1967-08-09 1967-08-09 Fire alarm with a field effect transistor protected against contact
SE08863/68A SE333696B (en) 1967-08-09 1968-06-28
DE19681766669 DE1766669B1 (en) 1967-08-09 1968-07-02 IONIZATION FIRE DETECTOR WITH PROTECTION DEVICE FOR FIELD EFFECT TRANSISTORS
DE6603864U DE6603864U (en) 1967-08-09 1968-07-02 FIRE DETECTOR WITH PROTECTION DEVICE FOR FIELD EFFECT TRANSISTORS
FR1575250D FR1575250A (en) 1967-08-09 1968-07-30
US749166A US3590321A (en) 1967-08-09 1968-07-31 Fire alarm device
NL6811153.A NL160101C (en) 1967-08-09 1968-08-06 FIRE DETECTOR WITH PROTECTIVE DEVICES FOR AN INCLUDED FIELD EFFECT TRANSISTOR.
GB38248/68A GB1192298A (en) 1967-08-09 1968-08-09 Fire Alarm Devices including Field-Effect Transistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1120067A CH460594A (en) 1967-08-09 1967-08-09 Fire alarm with a field effect transistor protected against contact

Publications (1)

Publication Number Publication Date
CH460594A true CH460594A (en) 1968-07-31

Family

ID=4371058

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1120067A CH460594A (en) 1967-08-09 1967-08-09 Fire alarm with a field effect transistor protected against contact

Country Status (7)

Country Link
US (1) US3590321A (en)
CH (1) CH460594A (en)
DE (2) DE1766669B1 (en)
FR (1) FR1575250A (en)
GB (1) GB1192298A (en)
NL (1) NL160101C (en)
SE (1) SE333696B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2023953A1 (en) * 1969-05-19 1970-11-26 Cerberus AG, Männedorf (Schweiz) Smoke detector with at least one smoke measuring chamber

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762515A (en) * 1972-06-07 1973-10-02 Ltv Aerospace Corp Apparatus for shielding portions of a vehicle
US3913083A (en) * 1973-12-11 1975-10-14 George O Baker Control system for aircraft refueling facilities
CA1063486A (en) * 1976-04-22 1979-10-02 Bristol-Myers Squibb Company Ultrasonic cleaner
GB2487560B (en) * 2011-01-26 2013-09-04 Thorn Security Fire detector unit
DE102016200914A1 (en) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Device for line monitoring at a locking device of fire doors with smoke switches
DE102016200913A1 (en) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Device for line monitoring of hazard detectors and locking devices
CN113570805B (en) * 2021-09-23 2021-11-23 江苏优思智能科技有限公司 Intelligent building disaster alarm monitoring device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756299A (en) * 1953-08-10 1956-07-24 Motorola Inc Radio cover switch
CH355380A (en) * 1957-10-30 1961-06-30 Cerberus Gmbh Device for determining changes in the composition of a gas
FR79314E (en) * 1961-03-06 1962-11-16 Advanced systems with multiple combinations, to keep doors or windows, either in a closed position or in an open position
US3413497A (en) * 1966-07-13 1968-11-26 Hewlett Packard Co Insulated-gate field effect transistor with electrostatic protection means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2023953A1 (en) * 1969-05-19 1970-11-26 Cerberus AG, Männedorf (Schweiz) Smoke detector with at least one smoke measuring chamber

Also Published As

Publication number Publication date
DE6603864U (en) 1969-11-13
GB1192298A (en) 1970-05-20
DE1766669B1 (en) 1971-10-21
US3590321A (en) 1971-06-29
NL6811153A (en) 1969-02-11
NL160101B (en) 1979-04-17
SE333696B (en) 1971-03-22
NL160101C (en) 1979-09-17
FR1575250A (en) 1969-07-18

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