FR1522038A - Portable warning device for mining, intended in particular for warning shots - Google Patents

Portable warning device for mining, intended in particular for warning shots

Info

Publication number
FR1522038A
FR1522038A FR105538A FR105538A FR1522038A FR 1522038 A FR1522038 A FR 1522038A FR 105538 A FR105538 A FR 105538A FR 105538 A FR105538 A FR 105538A FR 1522038 A FR1522038 A FR 1522038A
Authority
FR
France
Prior art keywords
warning
mining
intended
shots
portable
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
FR105538A
Other languages
French (fr)
Inventor
Rolf Huebner
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
Priority to FR105538A priority Critical patent/FR1522038A/en
Application granted granted Critical
Publication of FR1522038A publication Critical patent/FR1522038A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
FR105538A 1967-05-08 1967-05-08 Portable warning device for mining, intended in particular for warning shots Expired FR1522038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR105538A FR1522038A (en) 1967-05-08 1967-05-08 Portable warning device for mining, intended in particular for warning shots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR105538A FR1522038A (en) 1967-05-08 1967-05-08 Portable warning device for mining, intended in particular for warning shots

Publications (1)

Publication Number Publication Date
FR1522038A true FR1522038A (en) 1968-04-19

Family

ID=8630377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR105538A Expired FR1522038A (en) 1967-05-08 1967-05-08 Portable warning device for mining, intended in particular for warning shots

Country Status (1)

Country Link
FR (1) FR1522038A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316828A1 (en) * 1987-11-20 1989-05-24 ABB CEAG Licht- und Stromversorgungstechnik GmbH Portable tunnel warning instrument
WO1999056258A1 (en) * 1998-04-30 1999-11-04 The Government Of The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services Intrinsically-safe roof hazard alert module
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316828A1 (en) * 1987-11-20 1989-05-24 ABB CEAG Licht- und Stromversorgungstechnik GmbH Portable tunnel warning instrument
WO1999056258A1 (en) * 1998-04-30 1999-11-04 The Government Of The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services Intrinsically-safe roof hazard alert module
GB2355098A (en) * 1998-04-30 2001-04-11 Us Gov Health & Human Serv Intrinsically safe roof hazard alert module
GB2355098B (en) * 1998-04-30 2003-07-02 Us Gov Health & Human Serv Intrinsically safe roof hazard alert module
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

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