FR2507777B1 - - Google Patents

Info

Publication number
FR2507777B1
FR2507777B1 FR8209847A FR8209847A FR2507777B1 FR 2507777 B1 FR2507777 B1 FR 2507777B1 FR 8209847 A FR8209847 A FR 8209847A FR 8209847 A FR8209847 A FR 8209847A FR 2507777 B1 FR2507777 B1 FR 2507777B1
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
FR8209847A
Other languages
French (fr)
Other versions
FR2507777A1 (fr
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of FR2507777A1 publication Critical patent/FR2507777A1/fr
Application granted granted Critical
Publication of FR2507777B1 publication Critical patent/FR2507777B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/06—Measuring force or stress, in general by measuring the permanent deformation of gauges, e.g. of compressed bodies
    • 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
    • E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
FR8209847A 1981-06-10 1982-06-07 Dispositif de mesure Granted FR2507777A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3122866A DE3122866C2 (de) 1981-06-10 1981-06-10 Meßeinrichtung

Publications (2)

Publication Number Publication Date
FR2507777A1 FR2507777A1 (fr) 1982-12-17
FR2507777B1 true FR2507777B1 (OSRAM) 1984-08-17

Family

ID=6134281

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8209847A Granted FR2507777A1 (fr) 1981-06-10 1982-06-07 Dispositif de mesure

Country Status (6)

Country Link
US (1) US4468970A (OSRAM)
JP (1) JPS57204429A (OSRAM)
CH (1) CH653773A5 (OSRAM)
DE (1) DE3122866C2 (OSRAM)
FR (1) FR2507777A1 (OSRAM)
GB (1) GB2100012B (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723450A1 (de) * 1987-07-16 1989-01-26 Audi Ag Vorrichtung zum erkennen von ueberbeanspruchungen an bauteilen aus faserverstaerktem kunststoff
DE8713420U1 (de) * 1987-10-06 1987-12-10 Bergwerksverband Gmbh, 4300 Essen Meßeinrichtung zum Erkennen von Ankerbelastungen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020409A (fr) * 1950-06-13 1953-02-06 Onera (Off Nat Aerospatiale) Procédé et produits pour l'étude de la répartition des contraintes dans les pièces mécaniques
US2724964A (en) * 1952-09-02 1955-11-29 Magnaflux Corp Method of determining strain values in rigid articles
US2824481A (en) * 1955-03-23 1958-02-25 Sidney P Johnson Stress-indicating fastener
GB1119530A (en) * 1964-07-31 1968-07-10 C I M Consultants Ltd A load change sensing instrument
DE2106192A1 (de) * 1971-02-10 1972-08-31 Bergwerksverband Gmbh Meßeinrichtung zum Ermitteln von Kraf ten, vorzugsweise der Ausbaustutzkrafte im Bergbau
JPS5254470A (en) * 1975-10-29 1977-05-02 Hitachi Ltd Breaking type detector
DE2618538C3 (de) * 1976-04-28 1980-08-21 Bergwerksverband Gmbh, 4300 Essen Meßeinrichtung zum ungefähren Ermitteln von Ausbaustützkräften im Bergbau

Also Published As

Publication number Publication date
GB2100012B (en) 1985-06-12
GB2100012A (en) 1982-12-15
DE3122866C2 (de) 1984-04-19
US4468970A (en) 1984-09-04
JPS57204429A (en) 1982-12-15
DE3122866A1 (de) 1982-12-30
CH653773A5 (de) 1986-01-15
FR2507777A1 (fr) 1982-12-17

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Legal Events

Date Code Title Description
ST Notification of lapse