FR1575250A - - Google Patents

Info

Publication number
FR1575250A
FR1575250A FR1575250DA FR1575250A FR 1575250 A FR1575250 A FR 1575250A FR 1575250D A FR1575250D A FR 1575250DA FR 1575250 A FR1575250 A FR 1575250A
Authority
FR
France
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1575250A publication Critical patent/FR1575250A/fr
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)
FR1575250D 1967-08-09 1968-07-30 Expired FR1575250A (enrdf_load_stackoverflow)

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
FR1575250A true FR1575250A (enrdf_load_stackoverflow) 1969-07-18

Family

ID=4371058

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1575250D Expired FR1575250A (enrdf_load_stackoverflow) 1967-08-09 1968-07-30

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)

Families Citing this family (8)

* 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
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

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

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
GB1192298A (en) 1970-05-20
SE333696B (enrdf_load_stackoverflow) 1971-03-22
DE6603864U (de) 1969-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse