FR2257119B3 - - Google Patents

Info

Publication number
FR2257119B3
FR2257119B3 FR7434510A FR7434510A FR2257119B3 FR 2257119 B3 FR2257119 B3 FR 2257119B3 FR 7434510 A FR7434510 A FR 7434510A FR 7434510 A FR7434510 A FR 7434510A FR 2257119 B3 FR2257119 B3 FR 2257119B3
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
FR7434510A
Other versions
FR2257119A1 (fr
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.)
Pittway Corp
Original Assignee
Pittway Corp
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 Pittway Corp filed Critical Pittway Corp
Publication of FR2257119A1 publication Critical patent/FR2257119A1/fr
Application granted granted Critical
Publication of FR2257119B3 publication Critical patent/FR2257119B3/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/181—Prevention or correction of operating errors due to failing power supply
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
FR7434510A 1974-01-07 1974-10-14 Expired FR2257119B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43113774A 1974-01-07 1974-01-07

Publications (2)

Publication Number Publication Date
FR2257119A1 FR2257119A1 (fr) 1975-08-01
FR2257119B3 true FR2257119B3 (fr) 1977-07-22

Family

ID=23710644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7434510A Expired FR2257119B3 (fr) 1974-01-07 1974-10-14

Country Status (5)

Country Link
JP (1) JPS5726398B2 (fr)
DE (1) DE2500435A1 (fr)
FR (1) FR2257119B3 (fr)
GB (1) GB1499581A (fr)
IT (1) IT1023231B (fr)

Also Published As

Publication number Publication date
DE2500435A1 (de) 1975-07-17
JPS50103300A (fr) 1975-08-15
JPS5726398B2 (fr) 1982-06-04
FR2257119A1 (fr) 1975-08-01
IT1023231B (it) 1978-05-10
GB1499581A (en) 1978-02-01

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Legal Events

Date Code Title Description
ST Notification of lapse