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NL224947A - - Google Patents

Info

Publication number
NL224947A
NL224947A NL224947DA NL224947A NL 224947 A NL224947 A NL 224947A NL 224947D A NL224947D A NL 224947DA NL 224947 A NL224947 A NL 224947A
Authority
NL
Netherlands
Application number
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.)
Publication of NL224947A publication Critical patent/NL224947A/xx

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
    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)
NL224947D 1957-02-19 NL224947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH888296X 1957-02-19

Publications (1)

Publication Number Publication Date
NL224947A true NL224947A (en)

Family

ID=4545451

Family Applications (2)

Application Number Title Priority Date Filing Date
NL108575D NL108575C (en) 1957-02-19
NL224947D NL224947A (en) 1957-02-19

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL108575D NL108575C (en) 1957-02-19

Country Status (6)

Country Link
US (1) US3160866A (en)
BE (1) BE564961A (en)
CH (2) CH351872A (en)
DE (1) DE1081804B (en)
GB (1) GB888296A (en)
NL (2) NL224947A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286246A (en) * 1963-12-24 1966-11-15 Coen Co Annunciator for system malfunctions
IL27293A (en) * 1966-03-10 1971-03-24 Pyrotector Inc Particle detector
US3573777A (en) * 1968-12-09 1971-04-06 Honeywell Inc Combustion products detector control apparatus
GB1298083A (en) * 1968-12-26 1972-11-29 Tokyo Hochiki Kk Alarm circuit
US3657737A (en) * 1969-12-29 1972-04-18 Jeffrey E Hamm Method of and device for smoke detection and circuits therefor
ZA71780B (en) * 1970-03-31 1971-10-27 Nittan Co Ltd Fire alarming system
US3702468A (en) * 1970-08-10 1972-11-07 Nittan Co Ltd Fire alarming system
US3728703A (en) * 1970-10-12 1973-04-17 Edward Co Inc Fire detector stabilizer circuit
US3987423A (en) * 1975-12-22 1976-10-19 The United States Of America As Represented By The United States Energy Research And Development Administration Ionization-chamber smoke detector system
US4117479A (en) * 1976-04-16 1978-09-26 American District Telegraph Company Multi-mode intrusion alarm system
US4481502A (en) * 1982-03-26 1984-11-06 Dawson N Rick Central smoke alarm and annunciator
GB2217888A (en) * 1988-04-30 1989-11-01 Andrew Murrell Locally sited intruder alarm signal and fault indicator unit
US8101130B2 (en) * 2006-09-15 2012-01-24 Applied Nanotech Holdings, Inc. Gas ionization source

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US947000A (en) * 1909-03-03 1910-01-18 John P Kelly Fire-alarm system.
US1762906A (en) * 1926-11-29 1930-06-10 Reyrolle A & Co Ltd Electric signaling or control system
DE825224C (en) * 1949-10-07 1951-12-17 Anton John Electrical alarm system for displaying excessively high temperatures in stacks of hay, straw, etc. like
US2646556A (en) * 1950-06-17 1953-07-21 C O Two Fire Equipment Co Supervised alarm system
FR1093208A (en) * 1953-02-14 1955-05-02
US2971183A (en) * 1956-06-11 1961-02-07 Hagan Chemicals & Controls Inc Monitoring equipment

Also Published As

Publication number Publication date
GB888296A (en) 1962-01-31
CH358719A (en) 1961-11-30
BE564961A (en)
NL108575C (en)
CH351872A (en) 1961-01-31
US3160866A (en) 1964-12-08
DE1081804B (en) 1960-05-12

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