FR2425683B1 - - Google Patents

Info

Publication number
FR2425683B1
FR2425683B1 FR7912021A FR7912021A FR2425683B1 FR 2425683 B1 FR2425683 B1 FR 2425683B1 FR 7912021 A FR7912021 A FR 7912021A FR 7912021 A FR7912021 A FR 7912021A FR 2425683 B1 FR2425683 B1 FR 2425683B1
Authority
FR
France
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
FR7912021A
Other languages
French (fr)
Other versions
FR2425683A1 (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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2425683A1 publication Critical patent/FR2425683A1/en
Application granted granted Critical
Publication of FR2425683B1 publication Critical patent/FR2425683B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/147—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using electro-magnetic technology, e.g. tags or radar
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transmitters (AREA)
FR7912021A 1978-05-12 1979-05-11 SYSTEM PROHIBITING ENTRY INTO HAZARDOUS AREAS OF UNDERGROUND OPERATING FACILITIES Granted FR2425683A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2820840A DE2820840C3 (en) 1978-05-12 1978-05-12 Arrangement for the protection of danger areas in underground operations

Publications (2)

Publication Number Publication Date
FR2425683A1 FR2425683A1 (en) 1979-12-07
FR2425683B1 true FR2425683B1 (en) 1985-02-08

Family

ID=6039249

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912021A Granted FR2425683A1 (en) 1978-05-12 1979-05-11 SYSTEM PROHIBITING ENTRY INTO HAZARDOUS AREAS OF UNDERGROUND OPERATING FACILITIES

Country Status (5)

Country Link
BE (1) BE876198A (en)
DE (1) DE2820840C3 (en)
FR (1) FR2425683A1 (en)
GB (1) GB2024568B (en)
YU (1) YU111879A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010667C2 (en) * 1980-03-20 1982-11-11 Aeg-Elotherm Gmbh, 5630 Remscheid Safety device for a machine tool
DE3234601A1 (en) * 1982-09-17 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Arrangement for marking persons and objects
GB2355098B (en) * 1998-04-30 2003-07-02 Us Gov Health & Human Serv Intrinsically safe roof hazard alert module
US6114955A (en) * 1998-06-03 2000-09-05 Interactive Technologies, Inc. System and method for antenna failure detection
US6469619B1 (en) 1999-04-20 2002-10-22 The United States Of America As Represented By The Department Of Health And Human Services Intrinsically-safe roof hazard alert module

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO126975B (en) * 1967-03-30 1973-04-16 John Welsh
GB1187130A (en) * 1967-12-09 1970-04-08 Plessey Co Ltd Improvements in or relating to Vehicle Identification Systems.
US3798642A (en) * 1972-09-27 1974-03-19 Microlab Fxr Recognition system

Also Published As

Publication number Publication date
GB2024568A (en) 1980-01-09
DE2820840A1 (en) 1979-11-22
YU111879A (en) 1983-01-21
BE876198A (en) 1979-11-12
DE2820840C3 (en) 1982-01-21
DE2820840B2 (en) 1981-03-12
GB2024568B (en) 1982-05-19
FR2425683A1 (en) 1979-12-07

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Legal Events

Date Code Title Description
ST Notification of lapse