IT957767B - Perfezionamento nei percettori a linea di trasmissione per si stemi antifurto e simili - Google Patents

Perfezionamento nei percettori a linea di trasmissione per si stemi antifurto e simili

Info

Publication number
IT957767B
IT957767B IT50126/72A IT5012672A IT957767B IT 957767 B IT957767 B IT 957767B IT 50126/72 A IT50126/72 A IT 50126/72A IT 5012672 A IT5012672 A IT 5012672A IT 957767 B IT957767 B IT 957767B
Authority
IT
Italy
Prior art keywords
theft
improvement
transmission line
similar systems
line detectors
Prior art date
Application number
IT50126/72A
Other languages
English (en)
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Application granted granted Critical
Publication of IT957767B publication Critical patent/IT957767B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1895—Particular features or applications
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Magnetic Variables (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
IT50126/72A 1971-05-14 1972-05-08 Perfezionamento nei percettori a linea di trasmissione per si stemi antifurto e simili IT957767B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14354871A 1971-05-14 1971-05-14

Publications (1)

Publication Number Publication Date
IT957767B true IT957767B (it) 1973-10-20

Family

ID=22504545

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50126/72A IT957767B (it) 1971-05-14 1972-05-08 Perfezionamento nei percettori a linea di trasmissione per si stemi antifurto e simili

Country Status (8)

Country Link
US (1) US3703681A (it)
JP (1) JPS483578A (it)
CA (1) CA948277A (it)
FR (1) FR2137531A1 (it)
GB (1) GB1387683A (it)
IT (1) IT957767B (it)
NL (1) NL7205204A (it)
SE (1) SE373221B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786674A (en) * 1972-09-06 1974-01-22 Us Army Coaxial magnetostrictive accelerometer
US4167305A (en) * 1974-06-17 1979-09-11 Sumitomo Electric Industries Ltd. Optical transmission fiber
US3927386A (en) * 1974-07-12 1975-12-16 Ivan J Garshelis Method and apparatus for circularly magnetizing a helical conductive rod
US4000658A (en) * 1975-11-21 1977-01-04 Shell Oil Company Method and apparatus for measuring displacement of fixed structures
GB2175771B (en) * 1985-04-17 1989-01-11 Geoquip Security Systems Ltd Vibration sensitive transducer
DE4008644C1 (it) * 1990-03-17 1991-05-29 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
EP0640840B1 (en) * 1993-08-25 2002-10-30 Nippon Telegraph And Telephone Corporation Magnetic field sensing method and apparatus
US5714881A (en) * 1996-03-12 1998-02-03 Patriot Sensors And Controls Corporation Position measurement apparatus using wire waveguide in shock resistant suspension
US5804961A (en) * 1996-10-28 1998-09-08 Patriot Sensors & Control, Corp. Magnetostrictive waveguide position measurement apparatus using piezoelectric sensor
US5821743A (en) * 1997-01-03 1998-10-13 Patriot Sensors & Control Corporation Magnetostrictive waveguide position measurement apparatus with piezoceramic element
JP3559459B2 (ja) * 1998-12-14 2004-09-02 株式会社東芝 磁界センサ
FI114571B (fi) * 2003-05-13 2004-11-15 Metso Paper Inc Laitteisto ja menetelmä kone-elimen tilan tarkkailemiseksi
US9146168B1 (en) * 2013-03-15 2015-09-29 Consolidated Nuclear Security, LLC Pressure sensor
US9915575B1 (en) 2013-03-15 2018-03-13 Consolidated Nuclear Security, LLC Sensor and methods of detecting target materials and situations in closed systems
US9886119B1 (en) 2016-08-02 2018-02-06 Microsoft Technology Licensing, Llc Capacitive sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643367A (en) * 1948-01-05 1953-06-23 Phillips Petroleum Co Magnetostriction seismometer
US2841386A (en) * 1953-12-09 1958-07-01 Wilhelm S Everett Magnetostrictive accelerometer device
US3239754A (en) * 1963-10-09 1966-03-08 Texas Instruments Inc Thin film magnetometer
US3490034A (en) * 1966-11-18 1970-01-13 Burroughs Corp Magnetometer utilizing the delaying effect of a magnetic transmission line

Also Published As

Publication number Publication date
GB1387683A (en) 1975-03-19
CA948277A (en) 1974-05-28
JPS483578A (it) 1973-01-17
US3703681A (en) 1972-11-21
FR2137531A1 (it) 1972-12-29
NL7205204A (it) 1972-11-16
SE373221B (it) 1975-01-27

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