GB1192298A - Fire Alarm Devices including Field-Effect Transistors - Google Patents

Fire Alarm Devices including Field-Effect Transistors

Info

Publication number
GB1192298A
GB1192298A GB38248/68A GB3824868A GB1192298A GB 1192298 A GB1192298 A GB 1192298A GB 38248/68 A GB38248/68 A GB 38248/68A GB 3824868 A GB3824868 A GB 3824868A GB 1192298 A GB1192298 A GB 1192298A
Authority
GB
United Kingdom
Prior art keywords
cover
gate
transistor
replaced
fire 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
GB38248/68A
Other languages
English (en)
Inventor
Andreas Scheidweiler
Max Kuhn
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.)
Cerberus AG
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
Publication of GB1192298A publication Critical patent/GB1192298A/en
Expired legal-status Critical Current

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)
GB38248/68A 1967-08-09 1968-08-09 Fire Alarm Devices including Field-Effect Transistors Expired GB1192298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1120067A CH460594A (de) 1967-08-09 1967-08-09 Feuermelder mit einem gegen Berührung geschützten Feldeffekttransistor

Publications (1)

Publication Number Publication Date
GB1192298A true GB1192298A (en) 1970-05-20

Family

ID=4371058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38248/68A Expired GB1192298A (en) 1967-08-09 1968-08-09 Fire Alarm Devices including Field-Effect Transistors

Country Status (7)

Country Link
US (1) US3590321A (enrdf_load_stackoverflow)
CH (1) CH460594A (enrdf_load_stackoverflow)
DE (2) DE6603864U (enrdf_load_stackoverflow)
FR (1) FR1575250A (enrdf_load_stackoverflow)
GB (1) GB1192298A (enrdf_load_stackoverflow)
NL (1) NL160101C (enrdf_load_stackoverflow)
SE (1) SE333696B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113570805A (zh) * 2021-09-23 2021-10-29 江苏优思智能科技有限公司 一种智能建筑灾情报警监控装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH491449A (de) * 1969-05-19 1970-05-31 Cerberus Ag Rauchdetektoranordnung mit mindestens einer Rauchmesskammer
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 (de) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Vorrichtung zur Leitungsüberwachung an einer Feststelleinrichtung von Brandschutztüren mit Rauchschaltern
DE102016200913A1 (de) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Vorrichtung zur Leitungsüberwachung von Gefahrenmeldern und Feststellvorrichtungen

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 (de) * 1957-10-30 1961-06-30 Cerberus Gmbh Einrichtung zur Feststellung von Änderungen in der Zusammensetzung eines Gases
FR79314E (fr) * 1961-03-06 1962-11-16 Systèmes perfectionnés à combinaisons multiples, pour maintenir les portes ou fenêtres, soit dans une position de fermeture, soit dans une position d'ouverture
US3413497A (en) * 1966-07-13 1968-11-26 Hewlett Packard Co Insulated-gate field effect transistor with electrostatic protection means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113570805A (zh) * 2021-09-23 2021-10-29 江苏优思智能科技有限公司 一种智能建筑灾情报警监控装置
CN113570805B (zh) * 2021-09-23 2021-11-23 江苏优思智能科技有限公司 一种智能建筑灾情报警监控装置

Also Published As

Publication number Publication date
US3590321A (en) 1971-06-29
NL6811153A (enrdf_load_stackoverflow) 1969-02-11
NL160101B (nl) 1979-04-17
NL160101C (nl) 1979-09-17
CH460594A (de) 1968-07-31
DE1766669B1 (de) 1971-10-21
FR1575250A (enrdf_load_stackoverflow) 1969-07-18
SE333696B (enrdf_load_stackoverflow) 1971-03-22
DE6603864U (de) 1969-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee