GB1367642A - Proximity alarm system - Google Patents

Proximity alarm system

Info

Publication number
GB1367642A
GB1367642A GB1220174A GB1220174A GB1367642A GB 1367642 A GB1367642 A GB 1367642A GB 1220174 A GB1220174 A GB 1220174A GB 1220174 A GB1220174 A GB 1220174A GB 1367642 A GB1367642 A GB 1367642A
Authority
GB
United Kingdom
Prior art keywords
antenna
alarm system
proximity alarm
heading
april
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
GB1220174A
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.)
Crane Products Manufacturing Co Inc
Original Assignee
Crane Products Manufacturing Co 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 Crane Products Manufacturing Co Inc filed Critical Crane Products Manufacturing Co Inc
Publication of GB1367642A publication Critical patent/GB1367642A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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)
  • Jib Cranes (AREA)
  • Burglar Alarm Systems (AREA)
GB1220174A 1971-04-19 1971-07-01 Proximity alarm system Expired GB1367642A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1367642A true GB1367642A (en) 1974-09-18

Family

ID=22467692

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1220174A Expired GB1367642A (en) 1971-04-19 1971-07-01 Proximity alarm system
GB3083471A Expired GB1367641A (en) 1971-04-19 1971-07-01 Proximity alarm control device

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3083471A Expired GB1367641A (en) 1971-04-19 1971-07-01 Proximity alarm control device

Country Status (8)

Country Link
US (1) US3745549A (enExample)
JP (1) JPS53152587U (enExample)
AU (1) AU474202B2 (enExample)
CA (1) CA963553A (enExample)
DE (1) DE2137893C3 (enExample)
FR (1) FR2134977A5 (enExample)
GB (2) GB1367642A (enExample)
NL (1) NL7111829A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6853307B2 (en) 2002-03-14 2005-02-08 Irvin H. Nickerson High voltage proximity warning system and method

Families Citing this family (17)

* 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
CA1145400A (en) 1978-02-16 1983-04-26 Raymond A. Laperle Ground-isolated electrostatic field detector
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
EP0596878A1 (en) * 1991-08-01 1994-05-18 FORTIN, Gabriel 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
USD487707S1 (en) 2003-05-15 2004-03-23 Marcus V. Hurrion Proximity monitor
US20070018841A1 (en) * 2004-11-22 2007-01-25 Nickerson Irvin H High voltage proximity warning system utilizing wireless sensors and method
WO2009055709A1 (en) * 2007-10-24 2009-04-30 Gerald Givens 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6853307B2 (en) 2002-03-14 2005-02-08 Irvin H. Nickerson High voltage proximity warning system and method

Also Published As

Publication number Publication date
CA963553A (en) 1975-02-25
DE2137893C3 (de) 1979-12-06
JPS53152587U (enExample) 1978-12-01
NL7111829A (enExample) 1972-10-23
US3745549A (en) 1973-07-10
DE2137893B2 (de) 1979-04-19
AU3135971A (en) 1973-01-25
GB1367641A (en) 1974-09-18
AU474202B2 (en) 1976-07-15
FR2134977A5 (enExample) 1972-12-08
DE2137893A1 (de) 1972-11-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee