EP2094914A2 - Ancre terrestre améliorée - Google Patents

Ancre terrestre améliorée

Info

Publication number
EP2094914A2
EP2094914A2 EP07796194A EP07796194A EP2094914A2 EP 2094914 A2 EP2094914 A2 EP 2094914A2 EP 07796194 A EP07796194 A EP 07796194A EP 07796194 A EP07796194 A EP 07796194A EP 2094914 A2 EP2094914 A2 EP 2094914A2
Authority
EP
European Patent Office
Prior art keywords
leading
anchor
main body
edge
edges
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
EP07796194A
Other languages
German (de)
English (en)
Other versions
EP2094914A4 (fr
EP2094914B1 (fr
Inventor
William G. STAHM
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.)
MacLean Power LLC
Original Assignee
Foresight Products LLC
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
Priority claimed from US11/803,138 external-priority patent/US7534073B2/en
Application filed by Foresight Products LLC filed Critical Foresight Products LLC
Publication of EP2094914A2 publication Critical patent/EP2094914A2/fr
Publication of EP2094914A4 publication Critical patent/EP2094914A4/fr
Application granted granted Critical
Publication of EP2094914B1 publication Critical patent/EP2094914B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/803—Ground anchors with pivotable anchoring members

Definitions

  • This invention relates to ground anchors, more specifically to pivoting ground anchors.
  • Ground anchors or earth anchors of the pivoting or tilting type are well known and generally include a main body portion having a leading edge adapted to be forced into the ground, a trailing edge including an outturned lip and a cable or guide wire attachment point intermediate the leading and trailing edges generally positioned from about the mid point of the overall length of the anchor or towards the trailing edge so that upon exerting a force on the cable or attached guide wire after insertion of the anchor into the ground, the trailing edge outturned lip will bite into the earth causing the anchor to rotate or pivot to a locked position generally at a right angle to the withdrawal force.
  • Such anchors have included plate anchors such as shown in U.S. Patent 3,969,854, which are generally difficult to drive into the ground.
  • Anchors of that type have been sold by the assignee, Foresight Industries, Inc., under the trademark Duckbill and generally consist of cast cylindrical bodies having a cruciform shaped leading edge, a trailing edge with an outtumed lip, a blind bore, and a raised rib at a top side remote from the outtumed lip, which has an opening therethrough for receipt of either a shackle, a cable, or another load applying device to initiate rotation and "load locking," i.e. fixing, of the anchor after it is driven into the ground by a drive rod, by means of a hammer, jackhammer, hydraulic press, or the like. Variations on the general shape of such anchors are shown, for example, in U.S.
  • Patent 5,775,037 where the main body may be provided with side edges extending outwardly to the side of the central bore beyond the raised rib.
  • a further variant shown for example in U.S. Patent 4,802,317, assigned to the instant assignee, utilizes widespread side wings extending laterally of the cylindrical center body portion containing the blind bore. Those lateral wings may have sharpened leading edges and when the anchor is rotated to the locked position the wings increase the contact area between the anchor and the ground providing a wider surface to resist withdrawal of the anchor.
  • ground anchors are sometimes referred to as wing anchors.
  • the presence of the wings can, in certain instances, can be disadvantageous in that: (a) they provide a much larger area which must be pushed through the ground during insertion of the anchor thereby requiring a higher driving force; and (b) due to their rather large lateral extent with respect to the central body, the force necessary to pivot and lock the anchor is considerably increased. Additionally, (c) the wings can cause a deflection of the anchor during driving. Engagement of an outer reach of the wing with a more drive resistant structure, either a hardened soil structure such as hardened clay or with a stone or rock can have the effect of pivoting the anchor during its driving, which can cause the anchor to change direction as it is being driven into the ground. This can not only result in a mispositioned anchor, it can cause a bending of the drive rod, and in extreme conditions can prevent or hinder withdrawal of the drive rod after the anchor has been placed.
  • a substantially cylindrical anchor having a main body portion which is provided with a raised rib extending from an upper surface area of the cylinder, a first flattened plate- like extension projecting forwa ⁇ d of the main body terminating in a stepped leading edge, a second generally flat plate-like extension extending forward of ths main body projecting normally to the leading edge plate providing guiding surfaces, the second plate terminating at its leading end in a series stepped leading edges.
  • the outermost stepped leading edge on each side of the main body extends beyond the diameter of the main body and forms a leading edge for a short tapered rib which extends along the length of the main body from the rib's leading edge to the trailing edge of the main body and has a width projecting from the main body's outer diameter generally no greater than its leading edge width, which is substantially the same as the leading edge of each step of the guide surface leading edges.
  • the anchor comprises a substantially tubular or cylindrical main body section having a generally conical forward or leading end and a trailing edge formed at an obtuse angle to the axis of the body with an outturned lip at the bottom of the trailing edge, a raised rib projecting above the main body portion and having a connector for connection to a tension member, a blind bore extending into the main body from the trailing edge, a leading flat edge member projecting forwardly from the main body loading and terminating in a chisel point, a guide plate projecting laterally of the leading edge projection forward of the main body and the guiding plates having serrated or stepped leading edges on both sides of the leading edge member.
  • the anchor comprises a substantially tubular main body section having a generally pointed or sloped forward or leading end and a trailing edge formed at an obtuse angle to the longitudinal axis of the body with an outturned lip at the bottom of the trailing edge, a raised rib projecting above the main body portion and having a connector for connection to a pull member, a blind bore extending into the main body from the trailing edge, a leading edge member projecting forwardly from the main body portion terminating in a chisel point, a pair of guiding plates projecting laterally on each side of the leading edge projection forward of the main body and the guiding plates having serrated or stepped leading edges, the projecting leading edge being formed as a substantially flat plate vertically aligned extending along the axis of the body and terminating in forward stepped chiseled edges, the guide plates terminating at their outermost side edges in ribs extending along the exterior of the main body to the trailing edge, the ribs projecting from the main body approximately
  • Figure i is a side view of the anchor of this invention.
  • Figure 2 is a top view of the anchor of figure 1.
  • Figure 3 is a leading edge head-on view of the anchor of this invention.
  • Figure 4 is a view of the anchor of figure 1 from the other side.
  • Figure 5 is a view of the anchor from the bottom.
  • Figure 6 is a view from the trailing edge head-on.
  • the anchor 10 of this invention consists of a generally cylindrical main body portion 11 which may have a generally conical leading end 12 and a trailing end 13 formed at an oblique angle to the longitudinal axis of the main body.
  • the trailing end 13 incorporates at a bottom 15 of main body
  • a rib 17 is formed on a top 18 of the main body 11, and in the embodiment illustrated, includes a projecting central section 20 projecting furthest from the top 18 of any portion of the main body, that section 20 being provided with an opening 21 extending transversely therethrough.
  • the opening may have a cable threaded through it and clamped back on itself or may provide a fixture point for a shackle to which a cable or a rod may be attached.
  • Numerous other fixture examples for attaching the anchor wire or rod to the raised rib are known and can be substituted for the bore 21. These include T-shaped slots which can receive a T-shaped head on an anchor rod, or openings extending entirely through the anchor from the top surface 18 to the bottom surface 15 having a smaller opening in the rib area than at the bottom so that a headed rod may be fed through the anchor from the bottom with the rod extending outwardly from the rib and the head pivotal in the opening and being retained therein by the smaller opening at the top of the rib. These are all matters of design choice and are known to the art.
  • the conical shaped leading end of the main body portion may be formed as flat, sloping surfaces, abrupt end walls or otherwise shaped.
  • a sloped or angled wall, whether formed as a portion of the cone or flat triangular sections having surfaces at an angle to the longitudinal axis can be beneficial in comparison to a blunt radial surface as the anchor is being driven into the ground inasmuch as such surfaces will push the soil away from the main body 11 behind them.
  • leading top surface 30 of the raised rib 17 is preferably formed at an angle to the longitudinal axis leading from the outer diameter surface of the main body portion at its forward end 32 to the central section 20 at an attack angle facilitating movement of the soil.
  • the embodiment shown in the figures provides a flat top surface 31 which increases in width from its inter section with the top leading end 32 of surface 18 of the main body portion at the start of the conical section 12, the increase in width extending backwards to a point forward of the section 20.
  • the section 20 is of a smaller width, transverse the longitudinal center line of the main body so as to produce an abrupt width reduction at 34 between the leading portion of the rib and the attachment portion 20.
  • the side wall 35 of the rib extending from the flat top 31 may flare out linearly or, as shown in this embodiment, in a more rounded fashion, the shape of these surfaces being a matter of design choice.
  • leading edge of the raised rib be configured to direct soil away from the section 20 since the cable, shackle, rod end or the like may extend out of the side of the rib section 20 causing a resistance to ease of passage of the anchor into the ground.
  • a blind bore 60 extends into the main body from the trailing edge and terminates in a driving surface 61 at or adjacent and end of the blind bore. The end may be squared as shown or may be radiused to prevent mushrooming of the tip of the drive steel.
  • An elongated drive steel is inserted into the bore 60 and is used to drive the anchor into the ground by force application means, which, depending upon the size of the anchor, may range from a handheld hammer to a substantial piece of machinery similar to a pile driver. Since the depth of insertion of the anchor into the ground will be dependent upon anchor size, load to be retained, soil quality, and the like, the drive steel may be quite long, be constructed of threaded together sections and may not itself be structurally sufficient to ensure that the anchor drives straight.
  • This invention provides leading plates 70, 71, 72, and 73, or projecting surface members, which extend forward of the main body, which are positioned at an angle to one another, generally at right angles, and which provide leading edges 50, 51-55.
  • the plate 70 extends forward from the juncture 32 of the raised rib and terminates in stepped leading edges 50, 52 and 51, with 51 being centrally located. Each of the edges is chiseled forming a piercing tip.
  • the plates 70 and 71 may be considered as one plate and the plates 72 and 73 as a second plate, with the two plates intersecting or, for purposes of description, the plates may be considered as four separate plates extending radially from a common junction.
  • a greater or lesser number of plates can be provided and although the plates 72 and 73 are shown as having' their leading edges 53 spaced axially behind the leading edge 51 of plate 70-71, it will be understood that the two plates could extend an equal amount forward of the main body as shown in figure 4.
  • the plates provide anti-rotation surfaces resisting rotation of the anchor during driving. To this end the plates extend approximately 1/3 of the overall distance of the anchor when the beginning point of the plate is measured from the point 32 representing the forward end of the main body 1 1 prior to the conical or transition zone 12. When measured from the end of the transition zone 12 the plate will extend approximately 20% of the overall length of the anchor.
  • the plates when measured from the point 32 the plates extend between 20 and 40% of the overall length, and when measured from the point 33, being the end of the transition, the plates project forward from 15 to 25 percent of the length. This provides a sufficient anti-rotation surface to aid in straight driving of the anchor. While the top and bottom surfaces of the plates 70-73 may be formed parallel to one another, they may also lie at an angle.
  • the plate 71 is the mirror image of the plate 70 positioned on the other side or bottom side of the anchor, the plates 70 and 71 being separated by horizontal plates 72 and 73, which project similarly from the juncture of the main body portion with the conical shaped section 12 and are mirror imaged left and right.
  • the plates 72, 73 may terminate in setback, chiseled edges 53, 54 or may, if desired, have a more central edge extending to the tip 51, although it is my preference to have a single leading chiseled edge 51.
  • I have shown an X shaped or cruciform shaped leading edge consisting of four plates lying at right angles to one another equally spaced, it will be understood that other combinations may be utilized.
  • the bottom plate 71 could be eliminated such that the forward projection would be substantially T-shaped. It will be appreciated that the plate 70 cannot be eliminated as easily since it blends back into the raised rib.
  • the forward extensions are plates, or as plate-like members, this is for descriptive purposes only being understood that the entire anchor may be formed as a single casting, that the extensions may have a cross sectional curvature to them or may project upwardly or downwardly adjacent their outmost edges.
  • the top surface of the plate 70 or the bottom surface of the plate 71 or the sides of plates 72 or 73 may be chiseled. I use the term chiseled to include all forms of sharpened edges including those having a radius at their outermost point. It is not intended that the chiseled surfaces by knife sharp and dangerous to handle, however the surfaces should not be blunt to the full thickness of the plate.
  • the ribs 80 and 81 are positioned on each side of the main body, the ribs may have substantially triangular shaped chiseled leading edges 55 which terminate at the" outer edge of the ribs, the outer edge being chiseled or pointed as shown at 90, 91 of figure 3.
  • the leading edges 55 and the ribs 80, 81 have a width from the outer diameter of the main body which is relatively small, preferably about 20% of the diameter of the main body 11.
  • the ribs 80, 81 By extending the ribs 80, 81 the full length from before the leading end of the transition section 12 to the trailing edge 13 of the main body, by maintaining the ribs relatively narrow, and by making them V-shaped in cross section, they do not add significantly to the drag of the anchor as it is being driven into the soil but do act to facilitate straight driving of the anchor. It will be appreciated that the force of soil acting against the leading surface 30 of the raised rib will have a tendency to cause the anchor to pivot upwardly at its front or will push the entire anchor downwardly as it is being driven into the ground.
  • the ribs 80, 81 are intended to aid in resisting that tendency without adding significant resistance to the driving of the anchor into the ground.
  • leading edges 50-54 and 55 may lie at substantially right angles to the longitudinal axis of the anchor, such edges may be angled backwardly if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

L'invention concerne une ancre terrestre de type pivotant qui possède un corps sensiblement cylindrique, un trou borgne s'étendant à l'intérieur de l'extrémité axiale de fuite du corps cylindrique et un bord d'attaque faisant saillie à partir d'une extrémité d'attaque du corps, l'arête de bord d'attaque mise en forme pour faciliter la pénétration dans le sol, des surfaces de guidage s'étendant sensiblement parallèlement au bord d'attaque et en avant de la partie corps principal, ces surfaces de guidage possédant une pluralité de bords d'attaque d'arête en escalier vers l'arrière du bord d'attaque et d'un autre lorsque les bords d'attaque de la surface de guidage sont espacés plus à distance d'un centre du bord d'attaque, les surfaces de guidage se terminant en bord d'attaque final axialement espacé du bord d'attaque et latéralement de chaque bord d'attaque en escalier et possédant au moins une partie qui s'étend radialement au delà du corps principal, des crêtes de guidage s'étendant des bords d'attaque finaux à l'extrémité de fuite axiale faisant saillie radialement à partir du corps sensiblement pas plus loin que la largeur maximum des bords d'attaque de surface de guidage.
EP07796194.4A 2006-12-19 2007-06-15 Ancre terrestre améliorée Active EP2094914B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29/270,187 USD572546S1 (en) 2006-12-19 2006-12-19 Ground anchor
US11/803,138 US7534073B2 (en) 2007-05-14 2007-05-14 Earth anchor
PCT/US2007/014145 WO2008088372A2 (fr) 2006-12-19 2007-06-15 Ancre terrestre améliorée

Publications (3)

Publication Number Publication Date
EP2094914A2 true EP2094914A2 (fr) 2009-09-02
EP2094914A4 EP2094914A4 (fr) 2009-12-30
EP2094914B1 EP2094914B1 (fr) 2014-05-07

Family

ID=39589838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07796194.4A Active EP2094914B1 (fr) 2006-12-19 2007-06-15 Ancre terrestre améliorée

Country Status (12)

Country Link
US (1) USD572546S1 (fr)
EP (1) EP2094914B1 (fr)
CN (1) CN101410572B (fr)
AU (1) AU2007343936B2 (fr)
BR (1) BRPI0717855B1 (fr)
CA (1) CA2642556C (fr)
EG (1) EG25003A (fr)
HK (1) HK1126831A1 (fr)
MX (1) MX2008015990A (fr)
TW (1) TWM337590U (fr)
WO (1) WO2008088372A2 (fr)
ZA (1) ZA200807666B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7534073B2 (en) * 2007-05-14 2009-05-19 Stahm William G Earth anchor
NZ553958A (en) * 2007-03-19 2008-04-30 Miles Edward Moffat Ground Anchor with cable guiding means for a loop of a winch cable
GB201019945D0 (en) * 2010-11-24 2011-01-05 Gripple Ltd Ground anchor
FR3004738B1 (fr) 2013-04-19 2015-05-15 Musthane Ensemble d'ancrage
GB2514004B (en) * 2013-04-29 2017-05-03 Gripple Ltd Ground anchor
USD745699S1 (en) * 2014-01-13 2015-12-15 Gripple Limited Anchoring device
USD747633S1 (en) * 2014-03-13 2016-01-19 Anchoring Rope and Rigging Pty Ltd. Anchor
US10022117B2 (en) 2014-12-04 2018-07-17 Coloplast A/S Method of treating urinary incontinence
DE202015100556U1 (de) 2015-02-05 2016-02-08 Vogt Baugeräte Gmbh Erdankerbefestigungssystem
USD759473S1 (en) * 2015-02-20 2016-06-21 Wei Zhou Earth anchor
USD989614S1 (en) 2019-10-28 2023-06-20 Pure Global Brands, Inc. Ground anchor
EP3903692A1 (fr) 2020-04-29 2021-11-03 Coloplast A/S Système d'ancrage de tissus comprenant un dispositif de fixation et un outil de mise en place
USD980424S1 (en) 2020-04-29 2023-03-07 Coloplast A/S Tissue anchor
TWD212510S (zh) 2020-11-24 2021-07-01 陳燦志 地錨頭
USD974150S1 (en) * 2021-04-06 2023-01-03 Tsan-Jee Chen Anchor head
TWD216243S (zh) 2021-06-25 2021-12-21 陳燦志 地錨頭
USD974152S1 (en) * 2021-06-30 2023-01-03 Tsan-Jee Chen Anchor head

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574539A (en) * 1984-10-12 1986-03-11 Construction Robotics, Inc. Ground anchor with scoop channel discharging to groove forming ridge
EP0863262A1 (fr) * 1997-03-06 1998-09-09 Foresight Products, LLC Système bidirectionnel d'enfoncement d'un ancrage et méthode d'utilisation dudit système
EP0863261A1 (fr) * 1997-03-04 1998-09-09 Foresight Products, LLC Ancrage de sol et son procédé de réalisation
US6237289B1 (en) * 1996-01-16 2001-05-29 Foresight Products, Inc. Ground Anchor
EP1477613A1 (fr) * 2003-05-14 2004-11-17 Philippe Cantet Ancrage au sol avec moyens de protection du tirant et profil de pénétration concave
FR2866360A1 (fr) * 2004-02-16 2005-08-19 Atlas Ancre permettant de fixer au sol un tirant ou analogue

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9322642D0 (en) * 1993-11-03 1993-12-22 Platipus Anchors Ltd Improvements in ground anchors
CN2505514Y (zh) * 2001-08-17 2002-08-14 仇凤明 机翼型金属地锚

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574539A (en) * 1984-10-12 1986-03-11 Construction Robotics, Inc. Ground anchor with scoop channel discharging to groove forming ridge
US6237289B1 (en) * 1996-01-16 2001-05-29 Foresight Products, Inc. Ground Anchor
EP0863261A1 (fr) * 1997-03-04 1998-09-09 Foresight Products, LLC Ancrage de sol et son procédé de réalisation
EP0863262A1 (fr) * 1997-03-06 1998-09-09 Foresight Products, LLC Système bidirectionnel d'enfoncement d'un ancrage et méthode d'utilisation dudit système
EP1477613A1 (fr) * 2003-05-14 2004-11-17 Philippe Cantet Ancrage au sol avec moyens de protection du tirant et profil de pénétration concave
FR2866360A1 (fr) * 2004-02-16 2005-08-19 Atlas Ancre permettant de fixer au sol un tirant ou analogue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008088372A2 *

Also Published As

Publication number Publication date
AU2007343936B2 (en) 2013-07-25
CN101410572A (zh) 2009-04-15
EP2094914A4 (fr) 2009-12-30
CA2642556A1 (fr) 2008-07-24
CN101410572B (zh) 2015-09-16
BRPI0717855A2 (pt) 2014-01-14
USD572546S1 (en) 2008-07-08
EG25003A (en) 2011-04-27
HK1126831A1 (zh) 2009-09-11
TWM337590U (en) 2008-08-01
CA2642556C (fr) 2013-10-08
ZA200807666B (en) 2009-12-30
MX2008015990A (es) 2009-03-26
AU2007343936A1 (en) 2008-07-24
EP2094914B1 (fr) 2014-05-07
WO2008088372A2 (fr) 2008-07-24
WO2008088372A3 (fr) 2008-12-04
BRPI0717855B1 (pt) 2018-07-24

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