CH294917A - Alarm installation. - Google Patents

Alarm installation.

Info

Publication number
CH294917A
CH294917A CH294917DA CH294917A CH 294917 A CH294917 A CH 294917A CH 294917D A CH294917D A CH 294917DA CH 294917 A CH294917 A CH 294917A
Authority
CH
Switzerland
Prior art keywords
alarm installation
alarm
installation
Prior art date
Application number
Other languages
French (fr)
Inventor
Company C-O-Two Fire Equipment
Original Assignee
C O Two Fire Equipment Co
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 C O Two Fire Equipment Co filed Critical C O Two Fire Equipment Co
Publication of CH294917A publication Critical patent/CH294917A/en

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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire Alarms (AREA)
  • Emergency Alarm Devices (AREA)
  • Fire-Detection Mechanisms (AREA)
CH294917D 1950-06-17 1951-04-18 Alarm installation. CH294917A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US168706A US2646556A (en) 1950-06-17 1950-06-17 Supervised alarm system

Publications (1)

Publication Number Publication Date
CH294917A true CH294917A (en) 1953-11-30

Family

ID=22612609

Family Applications (1)

Application Number Title Priority Date Filing Date
CH294917D CH294917A (en) 1950-06-17 1951-04-18 Alarm installation.

Country Status (5)

Country Link
US (1) US2646556A (en)
CH (1) CH294917A (en)
DE (1) DE874422C (en)
FR (1) FR1035322A (en)
GB (1) GB698358A (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743431A (en) * 1951-02-14 1956-04-24 Glenn H Wright Condition indicators for lighting systems of trucks and trailers
US2704840A (en) * 1951-04-28 1955-03-22 Morse Signal Devices Fire alarm system
US2715720A (en) * 1951-10-25 1955-08-16 Felton S Jenkins Fire-smoke detection and warning apparatus
US2759174A (en) * 1952-08-26 1956-08-14 American District Telegraph Co Fire detector
US2782405A (en) * 1954-05-27 1957-02-19 Motorola Inc Apparatus for detecting motion in a bconfined space
US2799852A (en) * 1954-11-26 1957-07-16 Robert E Barnes Current responsive signal devices
US2898497A (en) * 1955-02-08 1959-08-04 Thomas R Cartmell Airborne radiation detector
NL108575C (en) * 1957-02-19
US3065348A (en) * 1957-11-19 1962-11-20 Atomic Energy Authority Uk Radiation measuring equipment
US3009138A (en) * 1958-12-02 1961-11-14 American District Telegraph Co Radioactive burglar alarm system
US3133192A (en) * 1959-12-28 1964-05-12 Union Carbide Corp Fail-safe radioactive absorption apparatus for liquid level determination
US3271756A (en) * 1960-03-22 1966-09-06 Harold J Burke Method and apparatus for detecting a hazardous condition
US3229090A (en) * 1961-06-01 1966-01-11 Eherline Instr Corp High level remote radiation monitor
DK101900C (en) * 1961-12-30 1965-06-08 Danske Securitas As Electrical alarm system, preferably for fire alarm.
GB990192A (en) * 1962-05-21 1965-04-28 Atomic Energy Authority Uk Improvements in or relating to dosimeters
US3245067A (en) * 1963-05-24 1966-04-05 B R K Electronics Inc Detection of products of combustion
JPS446089Y1 (en) * 1966-03-30 1969-03-05
US3521276A (en) * 1967-04-06 1970-07-21 Pyrotronics Inc Supervised alarm circuit
FR1568048A (en) * 1968-01-19 1969-05-23
CH497755A (en) * 1969-06-24 1970-10-15 Cerberus Ag Ionization fire alarms
US3882308A (en) * 1970-04-06 1975-05-06 Xerox Corp Detection system for superposed sheets
US3702468A (en) * 1970-08-10 1972-11-07 Nittan Co Ltd Fire alarming system
US3728706A (en) * 1970-09-28 1973-04-17 Gen Signal Corp System for indicating aerosols in the atmosphere
US3778800A (en) * 1971-04-09 1973-12-11 Statitrol Corp Self-monitoring battery operated circuit
JPS5424622Y2 (en) * 1972-05-30 1979-08-20
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
US4245174A (en) * 1978-04-24 1981-01-13 Isotec Industries Limited Dual ionization chamber
US4481502A (en) * 1982-03-26 1984-11-06 Dawson N Rick Central smoke alarm and annunciator
DE202009015335U1 (en) 2009-11-09 2010-03-25 Job Lizenz Gmbh & Co. Kg alarm Devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1229939A (en) * 1914-11-18 1917-06-12 Simon B Hess Electrical thermostat and circuit.
US2000074A (en) * 1928-03-08 1935-05-07 Kidde & Co Walter Supervised electric system
US1909212A (en) * 1930-03-11 1933-05-16 Signal Engineering & Mfg Co Selective control circuit for alarm systems
US2473940A (en) * 1945-11-20 1949-06-21 Edison Inc Thomas A Fire alarm system

Also Published As

Publication number Publication date
DE874422C (en) 1953-05-21
GB698358A (en) 1953-10-14
US2646556A (en) 1953-07-21
FR1035322A (en) 1953-08-21

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