FR2470852A1 - Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face - Google Patents

Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face

Info

Publication number
FR2470852A1
FR2470852A1 FR8025193A FR8025193A FR2470852A1 FR 2470852 A1 FR2470852 A1 FR 2470852A1 FR 8025193 A FR8025193 A FR 8025193A FR 8025193 A FR8025193 A FR 8025193A FR 2470852 A1 FR2470852 A1 FR 2470852A1
Authority
FR
France
Prior art keywords
plate
rectangular
bolt
roof support
mine roof
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.)
Granted
Application number
FR8025193A
Other languages
French (fr)
Other versions
FR2470852B1 (en
Inventor
Satya Prakash Arya
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of FR2470852A1 publication Critical patent/FR2470852A1/en
Application granted granted Critical
Publication of FR2470852B1 publication Critical patent/FR2470852B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • E21D21/0086—Bearing plates

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Rock Bolts (AREA)

Abstract

The mine roof support plate (10) is used with a bolt in the ground with a load of over 1430 kg. It is made from a rigid rectangle (12) with a raised central part (16) relative to the edges (14). The centre has a base (18) with a central hole (20). The base in rectangular with rounded angular edges. The plate is of equal thickness throughout, between 4.2. and 3.4mm. The hole is circular and the base is raised from the rest of the plate by about 25.4mm. The base has a flat bearing surface (20) around the hole and is at least 3.8mm wide.
FR8025193A 1979-12-03 1980-11-27 Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face Granted FR2470852A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9983679A 1979-12-03 1979-12-03

Publications (2)

Publication Number Publication Date
FR2470852A1 true FR2470852A1 (en) 1981-06-12
FR2470852B1 FR2470852B1 (en) 1984-11-23

Family

ID=22276846

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8025193A Granted FR2470852A1 (en) 1979-12-03 1980-11-27 Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face

Country Status (5)

Country Link
JP (1) JPS5681798A (en)
AU (1) AU537481B2 (en)
CA (1) CA1161675A (en)
FR (1) FR2470852A1 (en)
ZA (1) ZA804722B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0922611A (en) * 1994-12-21 1997-01-21 Mitsuru Kusanagi Manufacture of luminaire using bark of wild cherry tree
US20060285929A1 (en) * 2005-06-16 2006-12-21 Valgora George G Bearing plate having tab
JP6887358B2 (en) * 2017-10-02 2021-06-16 日鉄建材株式会社 Pressure receiving member of earth and sand structure, reinforcement structure of earth and sand structure, and reinforcement method of earth and sand structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748594A (en) * 1952-11-04 1956-06-05 Lukens Steel Co Roof bolt
US4112693A (en) * 1976-09-30 1978-09-12 Kaiser Steel Corporation Mine roof support plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748594A (en) * 1952-11-04 1956-06-05 Lukens Steel Co Roof bolt
US4112693A (en) * 1976-09-30 1978-09-12 Kaiser Steel Corporation Mine roof support plate

Also Published As

Publication number Publication date
AU537481B2 (en) 1984-06-28
AU6105180A (en) 1981-06-11
CA1161675A (en) 1984-02-07
FR2470852B1 (en) 1984-11-23
JPS5681798A (en) 1981-07-04
ZA804722B (en) 1981-07-29

Similar Documents

Publication Publication Date Title
US3640562A (en) Flexible vacuum lifter
GB926668A (en) Pipe patch clamp
ES283165U (en) Pipe support
ES2010437A6 (en) Screen with overlapping screen cloth elements.
JPS5274580A (en) Boat for vacuum evaporation
FR2470852A1 (en) Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face
GB1187751A (en) Improvements in or relating to Ground Engaging Feet or Claws for Support Legs on Construction Plant
GB1364828A (en) Adjustable securing arrangements
CA2115837A1 (en) Aeration Panel Structure
ES8304494A1 (en) Standard foundations for use on ship's decks
USD243295S (en) Pedestal base
JPS51132812A (en) Tape recorder with push-button tuning type radio
JPS5271732A (en) Valve device
USD290320S (en) Leg elevating support for a sunbather
ES8504351A1 (en) Mounting arrangement
FR2250368A5 (en) Post mounting in ground - comprises sole plate with support face and protrusion underneath for keying into concrete
FR2341718A1 (en) Support plate for base of upright - consists of notches for bolts and hinge piece, its sides being partly covered by base rims
JPS51133876A (en) Grinding met hod of steel surface
JPS56102076A (en) Electrode
JPS5214916A (en) Tank structure with dome roofing
JPS6458730A (en) Peripheral constraint type earthquakeproof device
JPS5747233A (en) Metal fitting
GB1530737A (en) Support for the back or seat of a person
GB932789A (en) Improvements in or relating to trough-shaped support sections particularly for sliding arch mine roof supports
ES484275A1 (en) Supporting structure