JPS53152587U - - Google Patents

Info

Publication number
JPS53152587U
JPS53152587U JP1977171015U JP17101577U JPS53152587U JP S53152587 U JPS53152587 U JP S53152587U JP 1977171015 U JP1977171015 U JP 1977171015U JP 17101577 U JP17101577 U JP 17101577U JP S53152587 U JPS53152587 U JP S53152587U
Authority
JP
Japan
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.)
Pending
Application number
JP1977171015U
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 filed Critical
Publication of JPS53152587U publication Critical patent/JPS53152587U/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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
    • 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
    • G08B21/02—Alarms for ensuring the safety of persons
    • 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
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)
  • Control And Safety Of Cranes (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Burglar Alarm Systems (AREA)
  • Jib Cranes (AREA)
JP1977171015U 1971-04-19 1977-12-19 Pending JPS53152587U (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13534771A 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
JPS53152587U true JPS53152587U (ja) 1978-12-01

Family

ID=22467692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1977171015U Pending JPS53152587U (ja) 1971-04-19 1977-12-19

Country Status (8)

Country Link
US (1) US3745549A (ja)
JP (1) JPS53152587U (ja)
AU (1) AU474202B2 (ja)
CA (1) CA963553A (ja)
DE (1) DE2137893C3 (ja)
FR (1) FR2134977A5 (ja)
GB (2) GB1367641A (ja)
NL (1) NL7111829A (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362992A (en) * 1978-01-30 1982-12-07 Sperry Limited System and method of detecting the proximity of an alternating magnetic field
US4727447A (en) * 1982-12-20 1988-02-23 Texaco Inc. Safety system and method
US4683464A (en) * 1983-06-30 1987-07-28 Texaco Inc. Safety monitor means and method
US4649375A (en) * 1985-10-31 1987-03-10 Fmc Corporation Apparatus for detecting power lines
FR2608781B1 (fr) * 1986-12-17 1989-03-03 Thomas Jean Detecteur de proximite entre une masse metallique et un element sous tension electrique
WO1993003403A1 (en) * 1991-08-01 1993-02-18 Gabriel Fortin Method and device for electrostatically investigating surface and sub-surface structures
USD383076S (en) * 1995-07-24 1997-09-02 Cripe Rodney J Emergency vehicle proximity alarm system
US5910775A (en) * 1996-08-29 1999-06-08 S&C Electric Company Phasing and indicator arrangements for switchgear or the like
US6002348A (en) * 1998-05-13 1999-12-14 Safe Flight Instrument Corporation Pilot's aid for detecting power lines
US6124798A (en) * 1998-12-09 2000-09-26 Institute Of Occupational Safety And Health, Council Of Labor Affairs, Executive Yuan Alarm device designed to warn of danger of hitting high voltage power line by crane in motion
US6600426B1 (en) 1999-10-04 2003-07-29 The United States Of America As Represented By The Department Of Health And Human Services Alarm system for detecting hazards due to power transmission lines
US6853307B2 (en) * 2002-03-14 2005-02-08 Irvin H. Nickerson High voltage proximity warning system and method
US20070018841A1 (en) * 2004-11-22 2007-01-25 Nickerson Irvin H High voltage proximity warning system utilizing wireless sensors and method
US20090108840A1 (en) * 2007-10-24 2009-04-30 Givens Gerald E Power Line Sensor
US8477027B2 (en) * 2007-10-24 2013-07-02 Gerald E. Givens Wireless sensor system
US8786447B1 (en) 2012-02-26 2014-07-22 Bryan C. Wise High voltage detection assembly

Also Published As

Publication number Publication date
GB1367642A (en) 1974-09-18
FR2134977A5 (ja) 1972-12-08
DE2137893C3 (de) 1979-12-06
DE2137893A1 (de) 1972-11-09
AU3135971A (en) 1973-01-25
NL7111829A (ja) 1972-10-23
AU474202B2 (en) 1976-07-15
GB1367641A (en) 1974-09-18
CA963553A (en) 1975-02-25
US3745549A (en) 1973-07-10
DE2137893B2 (de) 1979-04-19

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