GB1223716A - Apparatus for detecting and indicating changes in a physical variable - Google Patents

Apparatus for detecting and indicating changes in a physical variable

Info

Publication number
GB1223716A
GB1223716A GB27182/68A GB2718268A GB1223716A GB 1223716 A GB1223716 A GB 1223716A GB 27182/68 A GB27182/68 A GB 27182/68A GB 2718268 A GB2718268 A GB 2718268A GB 1223716 A GB1223716 A GB 1223716A
Authority
GB
United Kingdom
Prior art keywords
contacts
winding
relay
energized
energize
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
GB27182/68A
Other languages
English (en)
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.)
IXYS Integrated Circuits Division Inc
Original Assignee
IXYS Integrated Circuits Division Inc
CP Clare and 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 IXYS Integrated Circuits Division Inc, CP Clare and Co filed Critical IXYS Integrated Circuits Division Inc
Publication of GB1223716A publication Critical patent/GB1223716A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Keying Circuit Devices (AREA)
GB27182/68A 1967-06-19 1968-06-07 Apparatus for detecting and indicating changes in a physical variable Expired GB1223716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64693367A 1967-06-19 1967-06-19

Publications (1)

Publication Number Publication Date
GB1223716A true GB1223716A (en) 1971-03-03

Family

ID=24595049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27182/68A Expired GB1223716A (en) 1967-06-19 1968-06-07 Apparatus for detecting and indicating changes in a physical variable

Country Status (5)

Country Link
US (1) US3480939A (forum.php)
BE (1) BE716753A (forum.php)
FR (1) FR1570919A (forum.php)
GB (1) GB1223716A (forum.php)
SE (1) SE335692B (forum.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675654A (en) * 1984-11-13 1987-06-23 Copeland Bobby E Alarm monitoring device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR749941A (fr) * 1933-02-02 1933-08-01 Asea Ab Dispositif de signalisation verrouillée
FR824200A (fr) * 1936-07-11 1938-02-02 Siemens Ag Relais permettant de commander simultanément plusieurs contacts
US2731627A (en) * 1953-03-10 1956-01-17 Bogue Elec Mfg Co Thermocouple monitoring system
US3287717A (en) * 1962-07-30 1966-11-22 Compudyne Corp Static annunciator with acknowledgment and ring back

Also Published As

Publication number Publication date
SE335692B (forum.php) 1971-06-01
FR1570919A (forum.php) 1969-06-13
US3480939A (en) 1969-11-25
BE716753A (forum.php) 1968-12-02

Similar Documents

Publication Publication Date Title
US4028688A (en) Refrigeration unit air temperature detection alarm system
GB1508340A (en) Electric blanket
GB1202760A (en) Improvements in or relating to alarm signal installations
US2333210A (en) Device for remote supervision of periodical motion
GB1223716A (en) Apparatus for detecting and indicating changes in a physical variable
GB1524687A (en) Resettable thermally responsive switching device
GB360246A (en) Smoke detecting installation
GB806881A (en) Improvements in or relating to annunciator or alarm systems
GB1446166A (en) Accident preventing device
US2712129A (en) marmorstone
GB1065338A (en) Fire detection circuit
GB1411933A (en) Control device of copying machine
US3176283A (en) Supervised annunciator
US3512147A (en) Annunciator systems utilizing relay actuation
US3212079A (en) Signalling arrangement
GB1282137A (en) Fluid pressure indicating system
GB1379921A (en) Mesuring circuits
GB1231799A (forum.php)
GB1016801A (en) Heat detection device with test system
US2783458A (en) Faulty circuit alarm
SU372448A1 (ru) Прибор для измерения расхода жидкости и газа в трубопроводах
US655057A (en) Thermostat and alarm circuit controlled thereby.
GB1351559A (en) Secret electrical switching device for switching on and off an alarm system
SU369434A1 (ru) Устройство для измерения температуры
GB1434735A (en) Warning device