WO2010088416A1 - Stackable mine rock shields - Google Patents
Stackable mine rock shields Download PDFInfo
- Publication number
- WO2010088416A1 WO2010088416A1 PCT/US2010/022441 US2010022441W WO2010088416A1 WO 2010088416 A1 WO2010088416 A1 WO 2010088416A1 US 2010022441 W US2010022441 W US 2010022441W WO 2010088416 A1 WO2010088416 A1 WO 2010088416A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mine rock
- rock shield
- continuous protuberance
- mine
- shield
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 139
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000002861 polymer material Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
-
- 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
Definitions
- the present disclosure relates generally to underground mine supports, and more particularly, to stackable mine rock shields.
- Con sent ional mining operations typically utilize assemblies comprising bolts, bearing plates, and rock shields (o maintain and reinforce the structural integrity of underground mines.
- the bolts generally extend through openings in the center of and are secured against the beat ing plates and rock shields to provide support to mine surfaces.
- additional rock shields are used to reinforce exposed surfaces.
- the boll, bearing plate, and rock shield assemblies may also act as points of attachment for support cables or other mining paraphernalia.
- Embodiments of the present invention are directed to a mine rock shield including a body having a first surface and a second surface, an aperture positioned at about the center of the body for receiving a fastening mechanism, and a continuous protuberance extending outwaidly from the first surface of (lie periphery of the body and defining a recess. The continuous protuberance intersects the first surface of the body to form an angle of intersection.
- the mine rock shield further includes an edge portion at lhe perimeter of the body.
- the body of the mine rock shield is generally planar.
- the body is round. In yet other embodiments, the body is rectangular. [0008] In various embodiments of the invention, the diameter of the recess defined by the continuous protuberance of the mine rock shield increases, decreases or remains constant as the continuous protuberance extends outwardly from the first surface of the periphery of the body. Aspects of the present invention include various shapes of the cross- sectional profile of the continuous protuberance including, for example, post, half-post, hook, bulb, T-shape, arrow. , half-arrow, rectangle, square, round, triangle or a combination thereof. In some embodiments, the continuous protuberance may intersect the body to form an obtuse angle of intersection. In other embodiments, a right angle of intersection is formed. In yet other embodiments of the invention, an acute angle of intersection is formed.
- edge portion is unfinished while in other embodiments, the edge portion is rounded, rolled, folded or looped. In other embodiments, the edge portion is turned upward. In further embodiments, the edge portion is substantially perpendicular to lite plane of the body. In still other embodiments, the edge is immediately adjacent to the continuous protuberance.
- the mine rock shield includes an additional aperture.
- the mine rock shield includes a second continuous protuberance disposed between the aperture and the first continuous protuberance extending outwardly from the first surface of the body and defining a recess at the periphery of the body .
- the mine rock shield may further include a rigid notch.
- the rigid notch in some aspects of the invention, may be positioned at the angle of intersection between the continuous protuberance and the first surface of the body. In certain embodiments, the rigid notch is round, In other embodiments, the rigid notch is sc ⁇ iare.
- Further embodiments of the present invention are directed to a mine rock shield including a round commercial grade steel body having a first surface and a second surface, an aperture positioned at about die center of the round body for recen ing a fastening mechanism, and a rib extending around the periphery of the body and defining a recess.
- the mine rock shield further includes a square rigid notch at the periphery of the body and a rounded edge portion immediately adjacent to the nb.
- the edge portion is substantially perpendicular to the plnne of the body.
- a mine support system in another embodiment, includes a bearing plate, mine rock shield, and a fastening mechanism.
- the bearing plate includes a first surface, a second surface, and an aperture.
- the mine rock shield is coupled to the bearing plate and includes a round commercial grade steel body having a first surface and a second surface, an aperture positioned at about the center of the body for receiving a fastening mechanism, and a single continuous protuberance extending outwardly from the first surface of the periphery of the body and defining a recess.
- the continuous protuberance intersects the first surface of the body to form an angle of intersection with the Hi 1 St surface.
- the mine support system further includes a fastening mechanism, which couples the mine rock shield to the bearing plate, as well as a roof bolt configured to mount the bearing plate io a mine wall. roof, or other surface.
- FlG. IA illustrates a top view of a mine rock shield of the prior art:
- FlG. IB illustrates a sectional view taken along 1 - 1 of the mine rock shield shown in FIG. IA:
- FIG. 1C illustrates an enlarged partial sectional view of the perimeter of the mine rock shield of FIG. I A;
- FlG. 2A illustrates a top view of an exemplary mine rock shield according to an embodiment of the present invention
- FlG. 2B illustrates a sectional view taken along 2-2 of the exemplars' mine rock shield shown in FlG. 2A;
- FIG. 2C illustrates an enlarged partial sectional view of the perimeter of the exemplary mine rock shield of FlG. 2A:
- FlG. 3A illustrates a top view of a mine rock shield of the prior art: [0023] FlG. 3B illustrates a sectional ⁇ iesv taken along 3-3 of (he mine rock shield shown in FlG. 3 ⁇ .
- FIG. 3C illustrates nn enlarged partial sectional view of the perimeter of the mine rock shield of FlG. 3A;
- FIG. 4A illustrates a top view of an exemplary mine rock shield according to an additional embodiment of die present invention
- FlG. 4B illustrates a sectional ⁇ iew taken along 4-4 of the exemplary mine rock shield shown in FIG. 4A;
- FlG. 4C illustrates an enlarged partial sectional view of the perimeter of the exemplary mine rock shield of FIG. 4A;
- FIG. SA illustrates a top view of an exemplary' mine rock shield according to art additional embodiment of the present invention
- FIG. SB illustrates a sectional view taken along 5-5 of the exemplary mine rock shield shown in FIG. 5 ⁇ : [0030] FlG. SC illustrates an enlarged partial sectional view of the perimeter of the exemplary mine rock shield of FIG. SA;
- FlG. 6A illustrates a top view of an exemplary mine rock shield according to an additional embodiment of the present invention
- FIG. 6B illustrates a sectional view taken along 6-6 of the exemplary mine rock shield shown in FlG. 6A;
- FIG. 6C illustrates an enlarged partial sectional view of the perimeter of the exemplary mine rock shield of FIG. 6A;
- FlG. 7A illustrates a top view of an exemplary mine rock shield according to ait additional embodiment of the present invention
- FIG. 7B illustrates a sectional view taken along 7-7 of the exemplary mine rock shield shown in FlG. 7A;
- FIG. 1C illustrates an enlarged partial sectional ⁇ iew of the perimeter of the exemplary mine rock shield of FlG. 7 ⁇ .
- FIGS. IA, IB. and 1C illustrate a mine rock shield 100 of the prior an.
- the mine rock shield 100 includes a round body portion 110 positioned in a plane having a first major surface 120 and an opposite second major surface 130.
- the mine rock shield 100 further includes a hole 140 in a center portion of the round body portion 110 that extends through the first major surface 120 and the second major surface 130.
- a plurality of stacking lugs 150 are present on the mine rock shield 100 that elevate the perimeter 160 of the round body portion UO.
- An exemplary mine rock shield 200 according to one embodiment of the present invention is shown in FfGS. 2A, 2B, and 2C.
- the mine rock shield 200 may include a body 210 having a first surface 220 and a second surface 230. As shown in FlG. 2A, body 210 may be round. However, in other embodiments, the mine rock shield may be other various geometric shapes such as rectangular or triangular.
- the mine rock shield 200 may preferably be comprised of commercial grade steel, but may include other metals, woods, polymers or composite materials.
- the mine rock shield 200 may be constructed from a single sheet of commercial grade steel, for example, stamped into an appropriate shape by a pneumatic press. Alternative ⁇ . depending on the material used to construct the mine rock shield 200, the mine rock shield may be constructed via an injection molding process, a rolo-molding process, or other similar construction method.
- Aii aperture 240 may be positioned at about the center of the body 210.
- the aperture 240 mat is adapted to receive a fastening mechanism, such as, for example, a bolt, when the mine rock shield 200 is coupled to a bearing plate.
- a curvilinear rib or continuous protuberance 250 may circumscribe the aperture 240.
- the continuous protuberance 250 may extend outwardly from the first surface 220 of the periphery of the body 210 thereby defining a recess 260.
- the continuous protuberance 250 may intersect the first surface 220 of the body 210 to form an angle of intersection with the first surface 220.
- the continuous protuberance 250 may intersect the body 210 to form a right angle of intersection with the Hi 1 St surface 220 of the bod> 210.
- the continuous protuberance 550 may intersect the mine rock shield body to form an obtuse angle of intersection.
- the shape of the cross-section oftlie continuous protuberance 250 as show u in FIGS. 2B and 1C. may be, for example, a post.
- the shape of the continuous protuberance cross-section profile may be a half-post, hook, bulb. T-shape. arrow, half-arrow, rectangle, square, round, triangular or a combination thereof.
- the diameter of the recess 260 show) in FICS. 2B and 1C may remain constant as die continuous protuberance 250 extends outwardly from the first surface 220 of the periphery of the body 210.
- the mine rock shield 200 illustrated in FIGS. 2A, 2B, and 2C may include an edge portion 270 at the perimeter of the body 210. As show n in FIGS. 2B and 2C. the edge portion 270 may lie immediately adjacent (o (he continuous protuberance 2SO. In other embodiments, an area of the body 210 may be present between the continuous protuberance 250 and (he edge portion 270. The edge portion 270 as illustrated in FIGS. 2B and 2C may be rounded.
- the rounded edge portion 270 may provide a smooth perimeter edge to the mine rock shield 200, thereby eliminating various hazards associated with sharp corners of conventional mine shields and bearing plates such as, for example, physical injury caused by inadvertent contact with a sharp corner. As such, rounded edge portion 270 may be termed a "safety edge.”' In other embodiments of the invention, the edge portion is unfinished and may. as such, be sharp. In some embodiments, the edge portion mav be turned upward or downward. The edge portion 270 as shown in FIGS. 2B and 1C may also be substantially perpendicular to the plane of the body 210 and may terminate outside of the plane of the body 210.
- edge portion 270 is rolled for exemplary purposes only, tn additional embodiments, the edge portion may be rolled, folded, looped or otherwise modified as disclosed in U.S. Patent No. 7.284,933. which is incorporated herein by reference in us entirety .
- the mine rock shield 200 illustrated in FIGS. 2A, 2B, and 2C may further include ⁇ plurality of rigid notches 280 positioned at the angle of intersection between the continuous protuberance 250 and the first surface of the body 210 Depending on the application of the mine rock shield 200, the rigid notches 280 may be round, square, triangular, or nay other geometric shape.
- the rigid notches 280. the shape of the continuous protuberance 250. as well as the rounded edge portion 270 may permit mine rock shields 200 of the embodiments shown in FIGS. 2A, 2B, and 2C to be reversibly stackable on lop of one another such that ihe mine rock shields 200 are easily separable, particularly after
- FIGS. 3 ⁇ , 3B, and 3C A mine rock shield 300 of the prior an is shown in FIGS. 3 ⁇ , 3B, and 3C.
- the mine rock shield 300 includes a round body portion 310 having a first major surface 320 and an opposite second major surface 330.
- the mine rock shield 300 further includes a hole 340 in a center portion of the round body portion 310 that extends through the first 320 and second major surfaces 330.
- a rib member area 350 circumscribing the hole 340 is disposed between the hole 340 and the perimeter 360 of the round body portion 310.
- FIGS. 3A, 3B, and 3C The configuration shown in FIGS.
- FIGS. 4A, 4B, and 4C An exemplary mine rock shield 400 according Io another embodiment of the present invention is shown in FIGS. 4A, 4B, and 4C
- the mine rock shield 400 may include « round body 410 having a first surface 420 and a second surface 430.
- An aperture 440 adapted to receive a fastening mechanism, such as a boh, may be positioned at about the cetiter of the body 410.
- a continuous protuberance 450 may circumscribe the aperture 440 and extend outwardly from the first surface 420 of the periphery of the body 410 thereby defining a recess 460.
- the continuous protuberance 450 may intersect the first surface 420 of the body 410 to form a right angle of intersection with the first surface 420.
- the shape of the cross-section of the continuous protuberance 450 as shown in FIGS.4B and 4C may be a post.
- the diameter of the recess 460 shown in FIGS. 4B and 4C may remain constant as the continuous protuberance 450 extends outwardly from the first surface 420 of the periphery of the body 410.
- the mine rock shield 400 of FIGS. 4A» 4B, and 4C may include an edge portion 470 at the perimeter of the body 410. As shown in FIGS. 4B and 4C, the edge portion 470 may be immediately adjacent to the continuous protuberance 450. The edge portion 470 shown in FIGS. 4B and 4C may be turned upward and is substantially perpendicular lo the plane of the body 410. thereby eliminating hazards associated with sharp corners of conventional mine shields and bearing plates.
- the mine rock shield 400 may include a plurality of rigid notches 480 positioned ai (he angle of intersection between the continuous protuberance 450 and the first surface of the body 410.
- the rigid notches 480 allow mine rock shields 400 to be reversibly stackable on lop of one another such that the mine rock shields 400 are easily separable after being slacked.
- FIGS. 5A, 5B, and SC An exemplary mine rock shield SOO according to another embodiment of the present invention is shown in FIGS. 5A, 5B, and SC, As illustrated, the mine rock shield SOO may include a round body 510 having a first surface 520 and a second surface 530 and an aperture 540 positioned at about the center of the body 510.
- a continuous protuberance 550 may circumscribe the aperture 540 and may extend outwardly from the first surface 520 of the periphery of the body 510. thereby defining a recess 560.
- the continuous protuberance 550 may intersect the first surface 520 of the bodv 510 to form an obtuse angle of intersection with the first surface 520.
- the shape of the cross-sectional profile of the continuous protuberance 550 as shown in FIGS. 5B and 5C may be a bulb.
- the diameter of the recess 560 defined by the continuous protuberance 550 may increase as the continuous protuberance 550 extends outwardly from the first surface 520 of the periphery of the body 5 JO.
- the mine rock shield 500 of FIGS. 5 A, SB, and 5C may further include an edge portion 570 at the perimeter of the body 510.
- the edge portion S70 may be immediately adjacent to the continuous protuberance SSO.
- the edge portion 570 shown in FfGS. SB and 5C may be folded, thereby eliminating hazards associated with sharp corners of conventional mine shields and bearing plates.
- FIGS. 6A, 6B, and 6C An exemplary mine rock shield 600 according to another embodiment of the present invention is shown in FIGS. 6A, 6B, and 6C.
- the mine rock shield 600 show n in FIGS. 6A, 6B, and 6C may include a round body 610 having a first surface 620 and a second surface 630 and an aperture 640 positioned at about the center of the body 610.
- a continuous protuberance 650 may circumscribe the aperture 640 and may extend oulw ardlv from the first surface 620 of the periphery of the body 610, thereby defining a recess 660.
- the continuous protuberance 650 may intersect the first surface 620 of the body 610 to form a right angle of intersection with the first surface 620.
- the shape of the cross-sectional profile of die continuous protuberance 650 as shown in FIGS. 6B and 6C may be a post.
- the diameter of the recess 660 shown in FIGS. 6B and 6C may remain constant as the continuous
- the mine rock shield 600 of FIGS. 6A, 6B, ami 6C may further include an edge portion 670 at tlte perimeter of the body 610. As shown in FIGS. 6B and 6C ⁇ the edge portion 670 may be immediately adjacent io the continuous protuberance 650. The edge portion 670 may be folded, thereby eliminating hazards associated with sharp cornets of conventional mine shields and bearing plates.
- the mine rock shield 600 may include a plurality of rigid notches 680 positioned at the angle of intersection between the continuous protuberance 650 and the first surface of the body 610.
- the rigid notches 680 as well as the folded edge portion 670 may allow mine rock shields 600 to be reversibly stackable on top of one another such that the mine rock shields 600 are easily separable.
- a mine rock shield 700 according to another embodiment of the presetn invention is shown in FIGS. 7A, 7B, and 7C.
- the mine rock shield 700 may include a round body 710 has ing a first surface 720 and a second surface 730.
- an aperture 740 adapted to receive a fastening mechanism, such as a bolt, may be positioned at about the center of the body 710.
- the mine rock shield may include an additional aperture.
- additional apertures ma> be disposed at the periphery of the body and may be used for hanging cables, support cables, wires, hooks or other mining paraphernalia.
- additional hooks or attachment points may be included on a mine rock shield for performing similar functions, such as hanging cables, supporting pipes for fresh or waste water, or other related mining equipment.
- the additional hooks or attachment points may be welded or similarly attached to the mine rock shield.
- the additional hooks or attachment points may also be integrated into the mine rock shield when the mine rock shield is produced, e.g., either pressed or molded to the mine rock shield depending on the production process and material used for the mine rock shield.
- a continuous protuberance 750 may circumscribe the aperture 740 and may extend outwardly from the first surface 720 of the periphery of the body 710, thereby defining a recess 760.
- the continuous protuberance 750 may intersect the first surface 720 of the body 710 to form a right angle of intersection with the first surface 720.
- the mine rock shield may include a second continuous protuberance disposed between the aperture and the first continuous protuberance that extends outwardly from tlte first surface or second surface of the body and defines a recess at the periphery of the body.
- the mine rock shield 700 of FIGS. 7 A. 7B, and 1C may include an edge portion 770 at the perimeter of the body 710. As shown in FIGS. 7B and 1C, the edge portion 770 may be immediately adjacent to the continuous protuberance 750. The edge portion 770 shown in FIGS. 7B and 7C may be rolled under, thereby eliminating hazards associated with shaip corners of conventional mine shields and bearing plates. As illustrated in FIGS. 7A, 7B, and 7C. the mine rock shield 700 may further include a plurality of rigid notches 780 positioned at the angle of intersection between the continuous protuberance 750 and the first surface of the body 710. The rigid notches 780 as well as the rolled under edge portion 770 may allow mine rock shields 700 to be reversibly siackable on top of one another such that the mine rock shields 700 are easily separable.
- the mine rock shields described above may be incorporated into a mine support system.
- the mine support system may include at least one bearing plate, a roof boh configured to attach a bearing plate to a wall, roof, or other surface of a mine, at least one mine rock shield, and a fastening mechanism.
- the bearing plate may include a first surface, a second surface, and an aperture.
- the mine rock shield such as, for example, the mine rock shield 600 shown in FIGS. 6A, 6B, and 6C.
- the mine support system may further include a fastening mechanism, which couples the mine rock shield to the bearing plate.
- embodiments of the mine rock shield of the present invention stabilize and provide support to mine surfaces, thereby preventing such surfaces from crumbling and collapsing.
- the mine rock shield of embodiments of the present invention also compress cracks in mine surfaces surrounding the fastening mechanism and prevent air from entering the cracks and deteriorating the mine surfaces.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Building Environments (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2750663A CA2750663C (en) | 2009-01-30 | 2010-01-28 | Stackable mine rock shields |
AU2010208186A AU2010208186A1 (en) | 2009-01-30 | 2010-01-28 | Stackable mine rock shields |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14859109P | 2009-01-30 | 2009-01-30 | |
US61/148,591 | 2009-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010088416A1 true WO2010088416A1 (en) | 2010-08-05 |
Family
ID=42396016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/022441 WO2010088416A1 (en) | 2009-01-30 | 2010-01-28 | Stackable mine rock shields |
Country Status (4)
Country | Link |
---|---|
US (2) | US20100196103A1 (en) |
AU (1) | AU2010208186A1 (en) |
CA (1) | CA2750663C (en) |
WO (1) | WO2010088416A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108678792B (en) * | 2018-08-27 | 2023-07-21 | 邓立杰 | Movable supporting bone plate supporting structure for roadway |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161174A (en) * | 1963-08-06 | 1964-12-15 | Harrison Henry | Mine roof bolt tension indicator |
US6957931B2 (en) * | 2003-07-14 | 2005-10-25 | Slater Bert W | Roof bolt bearing plate and method for an underground mine |
US20060285929A1 (en) * | 2005-06-16 | 2006-12-21 | Valgora George G | Bearing plate having tab |
US7284933B2 (en) * | 2002-06-07 | 2007-10-23 | Jennmar Corporation | Square embossed roof and rib plate |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3580468A (en) * | 1969-08-05 | 1971-05-25 | Continental Can Co | Nestable double-walled disposable container |
US4652178A (en) * | 1985-07-08 | 1987-03-24 | Ingersoll-Rand Company | Mine roof plate |
NL8602014A (en) * | 1986-08-06 | 1988-03-01 | Cornelis Everardus Van Berkel | A METHOD AND APPARATUS FOR MANUFACTURING SUPPORT OR SUPPORT PLATES. |
AUPM722194A0 (en) * | 1994-08-02 | 1994-08-25 | Ani Corporation Limited, The | Bearer plate |
US6004077A (en) * | 1998-02-25 | 1999-12-21 | Saab; Thomas L. | System for securement of a mesh screening means and method of installation |
US6394274B1 (en) * | 1998-08-25 | 2002-05-28 | Pinckney Molded Plastics, Inc. | Stackable bakery tray |
US6352392B1 (en) * | 1999-10-08 | 2002-03-05 | Strata Products (Usa), Inc. | Mine roof support crib having only two or three planes, and method |
US6682268B2 (en) * | 2000-09-01 | 2004-01-27 | Earl Products, Inc. | Method and apparatus for secondary roof support in an underground mine |
US20030039514A1 (en) * | 2001-03-23 | 2003-02-27 | Excel Mining Systems, Inc. | Surface control bearing plate |
US20030068204A1 (en) * | 2001-10-10 | 2003-04-10 | Strata Products (Usa), Inc. | Lite mine roof support crib and method |
US6952902B2 (en) * | 2002-09-04 | 2005-10-11 | Pinconning Metals, Inc. | Attachment plate |
US7845510B2 (en) * | 2004-10-08 | 2010-12-07 | Dixie Consumer Products Llc | Reclosable cup lid with sliding closure member |
US7631468B2 (en) * | 2005-02-23 | 2009-12-15 | Omg Roofing, Inc. | Seam plate, for retaining roof decking membranes, having means for preventing interlocking of adjacent plates |
CA2723849C (en) * | 2008-05-08 | 2016-05-10 | Huhtamaki Nederland B.V. | Food packaging |
-
2010
- 2010-01-28 CA CA2750663A patent/CA2750663C/en not_active Expired - Fee Related
- 2010-01-28 WO PCT/US2010/022441 patent/WO2010088416A1/en active Application Filing
- 2010-01-28 AU AU2010208186A patent/AU2010208186A1/en not_active Abandoned
- 2010-01-28 US US12/695,948 patent/US20100196103A1/en not_active Abandoned
-
2013
- 2013-02-08 US US13/763,185 patent/US20130149045A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161174A (en) * | 1963-08-06 | 1964-12-15 | Harrison Henry | Mine roof bolt tension indicator |
US7284933B2 (en) * | 2002-06-07 | 2007-10-23 | Jennmar Corporation | Square embossed roof and rib plate |
US6957931B2 (en) * | 2003-07-14 | 2005-10-25 | Slater Bert W | Roof bolt bearing plate and method for an underground mine |
US20060285929A1 (en) * | 2005-06-16 | 2006-12-21 | Valgora George G | Bearing plate having tab |
Also Published As
Publication number | Publication date |
---|---|
US20130149045A1 (en) | 2013-06-13 |
CA2750663A1 (en) | 2010-08-05 |
AU2010208186A1 (en) | 2011-08-11 |
CA2750663C (en) | 2015-12-01 |
US20100196103A1 (en) | 2010-08-05 |
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