FR2217527A1 - - Google Patents

Info

Publication number
FR2217527A1
FR2217527A1 FR7403997A FR7403997A FR2217527A1 FR 2217527 A1 FR2217527 A1 FR 2217527A1 FR 7403997 A FR7403997 A FR 7403997A FR 7403997 A FR7403997 A FR 7403997A FR 2217527 A1 FR2217527 A1 FR 2217527A1
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.)
Granted
Application number
FR7403997A
Other languages
French (fr)
Other versions
FR2217527B1 (enrdf_load_stackoverflow
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2217527A1 publication Critical patent/FR2217527A1/fr
Application granted granted Critical
Publication of FR2217527B1 publication Critical patent/FR2217527B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)
  • Dowels (AREA)
FR7403997A 1973-02-09 1974-02-06 Expired FR2217527B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33095473A 1973-02-09 1973-02-09
US43069574A 1974-01-04 1974-01-04

Publications (2)

Publication Number Publication Date
FR2217527A1 true FR2217527A1 (enrdf_load_stackoverflow) 1974-09-06
FR2217527B1 FR2217527B1 (enrdf_load_stackoverflow) 1976-10-15

Family

ID=26987522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403997A Expired FR2217527B1 (enrdf_load_stackoverflow) 1973-02-09 1974-02-06

Country Status (3)

Country Link
CA (1) CA990555A (enrdf_load_stackoverflow)
FR (1) FR2217527B1 (enrdf_load_stackoverflow)
GB (1) GB1413263A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479322A1 (enrdf_load_stackoverflow) * 1980-03-28 1981-10-02 Thom Richard

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6935811B2 (en) 2002-11-13 2005-08-30 Terrasimco Inc. Frictional mining bolt
WO2014071442A1 (en) * 2012-11-12 2014-05-15 Rise Mining Developments Pty Ltd Rock bolt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240425A (en) * 1939-07-31 1941-04-29 Sternbergh James Hervey Fastener
US3396930A (en) * 1964-11-30 1968-08-13 Gregorovic Dragutin Ivan Support penetrating bracket

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240425A (en) * 1939-07-31 1941-04-29 Sternbergh James Hervey Fastener
US3396930A (en) * 1964-11-30 1968-08-13 Gregorovic Dragutin Ivan Support penetrating bracket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479322A1 (enrdf_load_stackoverflow) * 1980-03-28 1981-10-02 Thom Richard

Also Published As

Publication number Publication date
DE2405883A1 (de) 1974-08-15
DE2405883B2 (de) 1976-03-11
FR2217527B1 (enrdf_load_stackoverflow) 1976-10-15
GB1413263A (en) 1975-11-12
CA990555A (en) 1976-06-08

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