AU2017201448B2 - Anchors - Google Patents

Anchors Download PDF

Info

Publication number
AU2017201448B2
AU2017201448B2 AU2017201448A AU2017201448A AU2017201448B2 AU 2017201448 B2 AU2017201448 B2 AU 2017201448B2 AU 2017201448 A AU2017201448 A AU 2017201448A AU 2017201448 A AU2017201448 A AU 2017201448A AU 2017201448 B2 AU2017201448 B2 AU 2017201448B2
Authority
AU
Australia
Prior art keywords
anchor
helical
swivel
ths
anchor body
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.)
Active
Application number
AU2017201448A
Other versions
AU2017201448A1 (en
Inventor
Michael Baker
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.)
New Zealand Trustee Services Ltd
Original Assignee
New Zealand Trustee Services Ltd
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 New Zealand Trustee Services Ltd filed Critical New Zealand Trustee Services Ltd
Priority to AU2017201448A priority Critical patent/AU2017201448B2/en
Assigned to BAKER, DONNA, BAKER, MICHAEL, NEW ZEALAND TRUSTEE SERVICES LIMITED reassignment BAKER, DONNA Amend patent request/document other than specification (104) Assignors: BAKER, DONNA, BAKER, MICHAEL, New Zealand Trustee Services
Publication of AU2017201448A1 publication Critical patent/AU2017201448A1/en
Application granted granted Critical
Publication of AU2017201448B2 publication Critical patent/AU2017201448B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24Anchors
    • B63B21/26Anchors securing to bed

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

Abstract An anchor assembly for subsurface installation in a ground surface comprising a tubular anchor body having a helical element; a separate anchoring element for engaging with a ground surface, the anchoring element having a helical ground engaging member; the helical element of the anchor body and the helical ground engaging member of the anchoring element being engageable to form an anchor. WO 2011/145951 PCT/NZ2011/000074

Description

It is waif towi to use anchors to attach other objects to the ground. For example, anchors are used to attach boats or buoys Heating on the sea surface to the seabed via e line. Anchors can be temporary anchors, for use when the boat or buoy is intended to be temporarily secured . Alternatively, anchors can be permanent, for see 15 when the boat ar buoy is intended to be permanently secured.
One type of permanent anchor is a drag or gravity anchor. The anchor is typically a large concrete block that is secured relative to fee seabed by fe sheer weight. A buoy or boat Is attached to the block via a line. Drag anchors require a large amount of 20 surface area to function comaotiy. The buoy and anchor am spaced apart tram each other in a horfeootei direction and the line will extend between the buoy and th® anchor in a generally catenary shape, to normal canditons, toe horixontei distance is about three fees the sea depth. When a dreg anchor is used to anchor a buoy in a marine farm, the horfental distance required between the anchor and the buoy reduces the 25 usable surface area of th® farm. Concrete block anchors are often wwitobts for anchoring to steep or sloping sea beds because they tend to move down tha slop®.
Another problem with drag anchors is that they may move on the seabed during storms ar rough was.
Another type of permanent anchor Is a screw anchor. Screw anchors have as anchor body with a helical member. The screw anchor is screwed mto the sea bad by divsre or a remote controlled system using a drilling tool Screw anchors may require less horizontal space than gravity anchors. For example, it is possible to ass a screw anchor arte have horizontal distance about 12 times ths sea d4pth.
WO 2011/145951
PCT/NZ2dll^0(»74
Screw erschors may redes® th® environmental impact is the seated compared to gravity anchors that can drag across th® seabed. Horew, when installed in the seabed, the shaft of known screw anchors protrude® out from the seabed, which can have adverse environmental totecls.
2017201448 02 Mar 2017
Figure AU2017201448B2_D0001
Conveteonaily, screw anchors ere msnutectared by separately forming each ot the pate of the aechcr and then welding them together to form the anchor. For exampte, lb an anchor is manufactured by welding a steel helical member to a steal tutelar mamter. During the welding process, the helical member or tutelar cars become heat affected, which can weaken the anchor. The heat affected areas am prone to breaking when the anchor is drilled into the ground. Additionally, the welding process can be expensive.
IS
A helical member is conventionally formed by cutting a generally oval annular-shaped piece from a sheet of steel. The annular-shaped piece of steel is then stretched to form a helical member. When the helical member is formed and then welded to the tabular member, it is common for the helical member to extend at an angte that is not 9CF to toe ads of tha tabular member. Accordingly, when the anchor is drilled into the ground, voids can form in the surrounding ground above the helical member. Additionally, the ground above foe helical member can become compressed.
When conventional screw anchors are used, tha line is attached to th® anchor prior to the anchor being Inserted into the seabed. That increases the boat time required to assemble ate install th® screw anchors. which increases the cost to assemble and install the screw anchors.
It Is an object of some preferred embodiments of th® present invention to provide useful alternative to known anchors.
The term comprising·’ or derivatives thereof, for example comprises*, if and whan used in relation to a feature or combination of features, should not he interpreted to exclude the presence of a possible unspecified additional feature or features.
2017201448 02 Mar 2017
WO 2011/.145951
MfoWARY OF THE IWEMTICW
According to on® aspect of to® foyer? fen th&s’s is provided an anchor assembly for subsurface InstaMfors to a ground surface comprising:
ers anchor body having go anchoring fea&r® tor engaging with a ground surfacs: and a swivel having means tor receiving a line;
one of th® anchor body or the swivel having a corded pad and too other of the anchor body or the swivel having a complementary slot for receiving th© contact pari, the swivel being arranged to be refeasably engaged with the anchor body by id moving the swivel relative to the anchor in a first direction so that the contact pari passes through ths slat and then in a second direction that is transverse to the first dfectton to an engagement positron to which th® swivel is rotatable relative to the anchor tody end substantially secured in a longitudinal direction.
. IS Optionally th® means for receiving a line comprises an eye.
Optionally the contact pari composes a tab.
Optionally the means for receiving a line comprises an eye and at the same time the 20 contact part comprises a tab.
Optionally so® of the anchor body or th® swivel has a shank and th® lab extends al an angle from the shank.
Optionally the stat comprises a main portion complementary to the shank and a transverse parton complementary to the tab.
Optionally the anchor assembly comprises a retainer fur substantially securing the swivel relative to the anchor body In th® engagement position white simultaneously 3h allowing rotational movement of the swivel relative to the anchor body .
Optionally the retainer comprises a ring.
Optionally the retainer comprises a plug.
2017201448 02 Mar 2017
Figure AU2017201448B2_D0002
PCTZNZ»rtl«m074
Optionally ths plug is substantially wedge shaped.
Optionally th® anchor tody is ©iongate.
Optionally ths anchor body is tubular.
Optionally th® swivel is reteasably engageohte with th© anchor body st or rises' on attachment end of th® anchor tody.
Optionally th® anchoring feature is positioned st or near an insertion and of ths anchor body.
Optionally the anchoring feature for engaging with a ground surface comprises a helical member.
Optionally the anchoring feature far engaging with a ground surface is integrally farmed with fas anchor tody.
Optionally the anchoring feature far engaging with a ground surface comprises a 2d separate component that is reteasablv attachable to the anchor body.
Optionally the anchor assembly is suitable to be installed fa an underwater environment.
Optionally the anchor assembly is suitable to be felly submerged in the ground surface.
According to a farther aspect of the invention there is provided an anchor ter subsurface fastellsfcn fa a ground surface comprising:
an anchor body having an anchoring feature far engaging with a ground surface; engagement features for engaging wilts complementary engagement features of a drive head; and an outwardly extending flange;
the fcnge and engagement features being arranged such that when the engagement features of the anchor are engaged wife the engagement features of the drive head, matter is substantially inhibited from entering between the engagement features of the anchor and th® engagement features ©f the drive head.
WO 2011/145951
PCT/SM1/068674
2017201448 02 Mar 2017
Optionally the tenge comprises a tapered dsftedion surface that extends at an scute angle relative to the anchor tody.
According to a further aspect of to® invention them is provided as anchor assembly for subsurfeos installation to a ground surface comprising:
a tubular anchor body having a helical etomato;
a separate anchoring etomant for engaging with a ground surface, the anchoring element having a helical ground engaging member;
the helical efement to ths anchor body and the hefcal ground engaging member to the anchoring element being engageable to form an anchor.
Optionally toe helical ground engaging member comprises a tapered heltesl ground engaging member having a radius that increases from a fast insertion end towards an 15 opposite and of th® hdlcaf member.
According to a farther aspect to the inwnfcn there is provided an anchor for subsurface insteilaftan in a ground surface comprising a generally tubular anchor body; an anchoring feature far engaging with a ground surface; and engagement features far engaging with complementary engagement features to a drive head;
the anchor body, anchoring feature and engagement features befag Integrally farmed as a single component
Optionally the anchoring feature for engaging with a ground surface comprises a helical member.
Optionally the helical member comprises a tapered helical member.
BRIEF DESCRIPTOR OF THE DRAWINGS
Ths present invention will now be described by way of example only and with reference to the accompanying drawings in which:
Figure 1 is a front view to a first embodiment of ths anchor;
is a vertical cross-sectional view to the anchor of Figure 1;
fe an end view of ths anchor of Figure 1 s with the tenge and helical
2017201448 02 Mar 2017
WO 2011/145951
Figure 4
Figure 5
S Figwre S
Figure 7
Figure AU2017201448B2_D0003
Figure Id
Figure 11
Figure IS
Figure 13
Figure 14
Figure 13
Figure 13 ;
Figure 17 member net shown for clarity;
fe a partial cross-seteonsl view of the anchor of Figure 3 taken through line B-B of Figure 3:
fe a front few of a swresi;
is a bottom view of th® swivel of Figure 5;
fe a partial vertical cross-sectional view of the anchor of Figure 1 together with a swivel a drive head, and a doll string;
is a perspective view of a retoiner ring;
is a bottom view of the drive hoed;
is a cross-sectlcnsl view fetes through tine G-C of Figure s;
fe a oross-ssetoal view of th® drive head engaged with the drive shaft of Figure 7 taken through line D-D of Figure 7;
fe a cross-sectional view of the drive head disengaged from the drive shatt of Figure 7 taken through tins DO of Figure is a front view of an anchor body and anchor cone, prior to attachment; fe a partial cross sectional view of the anchor body and cone of Figure 13. with the cans attached;
fe a front view of an anchor body and piste, prior to attachment;
shows a number of separate plates that may be attached to the anchor body; and shows the first embodiment of the anchor installed in a ground surface.
DETAILED DESCRIFTIOH OF A FDFFERGED £»©«£ W
Figures 1 to 4 show a fet embodiment of an anchor rfXl The anchor 100 fe adapted to engage with a ground surface to secure the anchor in a ground surface. Ths anchor fe used to attach other objects to the ground surface. The ground may be. fa an underwater environment such as a seabed, river ted. or fate ted far example, as shown in Figure 17. Alternatively, the ground may be dry land. The ground may ba substantially tint, sloping or substantially vertical. For example, the anchor may be inserted into the seabed and attached to a boat, buoy or other object on the sea surface via a line 1. The line may ba rape, cabte, cord, catenaries, chain, or th® lite. When installed in the seabed, the anchor may be fally submerged fe the ground surface, as shown in Figure 17. Alternatively, a major portion of ths anchor body may be buried in the ground surface so that only a minor part of the anchor body protrudes
WO 2011/145951
PCT/NZ20HAMW074
2017201448 02 Mar 2017
Ths anchor 100 has sn anchor body 101 and an anchonno faamesnt sn th® form »f a betel member 103. Th® body 101 is an alongat®, substantially tubular component having an insertion end 105 and a line attachment end 107. Ths helical member 103 £ posifened st ar near th® insert»® end and is integrally farmed with th® anchor body 5 101.
Th® helical member 103 engages with a ground surface to secern th® anchor 100 in therein. In the embodiment shewn, th® helical member 103 is a tapered hdica! member in which th® radios R increases from a tip WO of the helical member towards 10 the second end 111 of the helical member. The helical member 103 extends outwardly tom the anchor body 101 st about 00 degrees relative to a fangMinal axis of th® anchor body. When the anchor Is insetted into toe ground, the helical member cars drill into ths ground without working against itself er churning ths ground as it is drilled, in addition, the anchor is unlikely to form wide above or below the helical member or
1S compress the ground above or felow fee hotel member.
With referenc® to Figures 5 and β, toe anchor assembly has a swivel 113 for attaching ths line to ths anchor. In toe embodiment show, the swivel has an eye 114 far receiving ths line. The swivel is rslaesabfy ongagaabfe with the anchor body 101 at or 2d near the attachment end 107 of th® anchor body. Th® swivel 113 is arranged to be engaged with the anchor body 101 by moving toe swivel relative to the anchor in a fate direction D1 transverse to the longitudinal direction of the anchor (see Figure 3} and then in a second direction D2 (see Figure 4) that is transverse to th® firel direction to an engagement position.
On® of the anchor body 101 or ft® swivel has a shank with a tab extending at an angle tom th® shank. The other of th® anchor body ar foe swivel has a con‘piementary slat for receiving th® shank and th® tab. fa the embodiment shown, ft® swivel 113 has the shank 115 and the tab 117 and the anchor body 101 has the complementary slot 119.
The fab is preferably disc shaped, as shown in Figure 5.
The slot 119 has a main portion 121 complementary to the ehank af th® swivel and a transverse portion 123 complementary to th® tab of the swivel. The transverse portion extends outwardly from ft® main portion in a first direction and a second opposite direction, as shown fa Figure 4, corresponding to the shap® of toe tab. Th® swivel 113 is ar ranged to bs engaged with the anchor body by moving the swivel relative to the
WO 2811/145951
PCT/NZ2811/880874
2017201448 02 Mar 2017 cnetor in the W. direction D through the slot 121 and then in the second direction D2 that is transverse to the slot. in the embodiment shown, ths second direction cowesponds with the longitudinal axis of the anchor, In the engagement position, the swivel is rotatable relative .to the anchor body 101 whan engaged with the anchor body.
S
Figure 7 is a cross-eectonal view of the anchor and swivel in an engaged position, together with a drive head 125 and drill string 127. The anchor assembly else has a retainer far securing fas swivel 113 reladva t© the anchor body 101 while simultaneously allowing rotebonal movement of the swivel relative to th© anchor body. ‘ W With reference to Figure 8, the retainer may comprise a split-ring 128 feat Is adapted to extend around fas shank 115 of ths swivel The Hug 128 prevents the swiwai tom being moved in towards toe anchor (is m a direction opposite to D2) and reteased tom engagement from the anchor body. The swivel has a shoulder or ledge 130, which ttte split ring oars sit substantially flush against That reduce© th® risk of the arc surface of 15 the swivel causing wear to the ring, which may otherwise cease th® ring to split and fail.
Alternatively, the retainer may comprise a substantially wedg® shaped plug that is adapted to b® inserted Into the transverse portion 123 of the slot. The plug 131 prevents the swivel tom being Inadvertently moved in towards the anchor (ie in © direction opposite to 132) and released from engagement tom th© anchor body 101. If a wedge plug is used, th® anchor assembly may have an internal annular member with a ledge that the plug can sit against
The anchor Is Inserted Into the ground using the drill string 127 and a drive head 125. The anchor has engagement features for engaging with complementary engagement features of ths drive head. Ths engagement features comprise protrusions extending outwardly tom the anchor body 101 near the attachment ©nd ©f the anchor. In the embodiment shewn, ths engagement features comprise rectangular shaped teeth 128.
3P The teeth extend radially outwards from th® anchor body and are evenly spaced around the circumference of ths anchor body. The engagement features are integrally farmed with the anchor body 101.
With reference to figures 18 to 12, the drive head 125 has compfementary engagement features 20. in ths embodiment shown, the engagement features comprise generally rectangular shaped teeth 132. The teeth 132 extend radially inwardly from fas drive
2017201448 02 Mar 2017
WO 2011/145951 head 125 and ar® evenly spaced around en internal suriace 133 offes drive bead. Ths engagement features are Integrally formed with the drive heed.
Th® drive heed 125 has a plurality of stots 135 that are complementary to the anchor 5 engagement features that allow foe attachment end of the anchor to he inserted into the drive head. Each of the slots has a narrow neck 137 that toads into a wider portion
138 of the slot The neck 137 has a width that generally corresponds to the width of to® anchor tooth 128. When th® anchor to engaged with the drive head, the teeth of the anchor are received by part of the wider portion 133 of the slot.
to
With reference to figures. 11 and 12. when each drive head tooth 132 to engaged with an anchor teeth 129 on one side, there is a free space 141 between the drive head tooth and the anchor tooth on the other side. That allows the drive head 125 to rotate in a first drilling direction D3 to insert the anchor into a ground surface and then is disengage by rotating in an opposite direction D4 without rotating the anchor in foe opposite direction.
When the drive bead and the anchor are engaged, a shear pin 143 extends between foe drive head and the anchor through an aperture 144, Th® shear pin is inserted to sit 20 in the position shown to broken lines in Figure 11. The shear pin holds foe drive head and anchor in engagement as they are moved through water and into the ground. During drilling, the shear pin does not have any faad applied to it. The sheer pin breaks when a specific load is applied to the shear pin, for example, when the drive head is rotated in foe direction OS.
Figure AU2017201448B2_D0004
With reference to Figure 7, the anchor has a flange 145 extending around foe anchor body 101 and radially outwards from the anchor body. As the anchor la being drilled into the seabed, th® drive head and attachment end of the anchor will become submerged in the seabed until the anchor is substantially felly submerged in foe seabed. The tenge prevents or at least substantially inhibits matter entering between the engagement features of ths anchor and the engagement features 129 of the drive heed, when engaged. The feng® 145 is integrally formed wife ths anchor body 181.
2017201448 02 Mar 2017
WG 2011/145951
Figure AU2017201448B2_D0005
engagement features of the drive dead, matter is substantially inhibited from entering between the engagement features of the sector and the engagement fsatures of ths drive head. The defection surfecs 147 defects matter that is expelted from the ground as the anchor te drilled into ths ground. The abutment surface contacts a lower surface of ths drive head. The abutment surface and lower surface of the drive head interact to prevent or st least substantially inhibit matter entering between the engagement members.
The anchor is an integrally formed component in which the anchor body 101, helical lb member 103, tapered Usage 145, and engagement features 129 are integrally formed as one piece. Accordingly, the anchor dess not have any areas that have teen adversely heat affected by welding, which could weaken th® anchor. Sy integrally forming the helical member 103 and the anchor body 101 as a single piece, th® helical member 103 extends outwardly from b-e anchor body 101 at about 90 degrees relative 15 to a longitudinal axis of the anchor body. By extending at about SO degrees, when the anchor is Inserted Into the ground, the helical member will drill into ths ground without working against itself or churning the ground as it is drilled into the ground. Integrally forming the parte as one piece removes the costs involved with assembly, including welding costs.
By integrally forming foe tapered flange 14S and engagement features 129 as a single piece, the location and distance between those parts of ths anchor can be defined mare precisely that when fosse parte are msnufootored and attached separately. The precise locations ot those peris of the anchor help inhibit matter entering between ths 25 engagement members as the anchor is drilled into foe ground.
integrally forming the parts ss on® piece ensures teat the anchor body W1, helical member 103, tapered fenge 145, end engagement features 129 era formed from ths same material. There ere no areas that are formed fem different materials. When the 3d parte are welded together, the welding material is typically a different material to ths base materiel of the anchor, which can cause corrosion. By integrally forming the anchor body W1, helical member 103, tapered flange 145, end engagement features 129 as a single part, the risk of eonesion is reduced.
With reference to figures 13 and 14, in an embodiment of ths anchor assembly, the anchoring feature for engaging with e ground surface comprises a separate component
2017201448 02 Mar 2017 in ths form cf an anchor cone 200, which fe releasable aitachabte to an anchor body 201. The anchor body 201 comprises a tubular anchor body having a helical connector ©foment 203 at an insertion ©nd. The anchor ©one 200 has s ground engaging member so the form of a helical member 207. The helical element of th® anchor body and the
S helical ground engaging member of the anchoring ©foment are engagsabte to form an anchor. The anchor cane and anchor tody each have correspondfog apertures 2Q6 for receiving festenem 208.
The body of the anchor cane is a substantially conicai component and the helical member 207 is a corresponding taperod heiicsi member. The cone and helical member are integrally formed. The radius R2 of the tapered helical member Increases from a tip 209 of the helical member towards the other end 213 of the cone. The helical member 207 eMends outwardly tram the anchor tody 101 at about 90 degrees relative to a longitudinal axis of th® anchor body.
With reference to Figure 18, in an embodiment the anchor assembly has separate plates 301a—301a that are reieasably attachable ta the anchor body. The plates have a number of different diameters, shown in Figure 1β. The plates and the anchor body haw complementary apertures 303 for receiving fasteners. The plate is mounted us 20 ths anchor in the direction sf th© arrows shown in Figure 15. The outer dtemeter of tb© plate will to chosen depending on ta intended use of ta anchor. For example, depending an ths expected load that will to applied to the anchor and/or the expected hardness of the ground surface.
A method of assembling the anchor assembly will naw be described. The lino 1 attached to the swivel 113 at ars earlier convenient time to reduce the amount of toat firn® required to assemble and insert foe anchor. The swivel 113 is then attached to the anchor body 101 by moving the swivel relative to the anchor in the first direction D through the slot and tan in th® second direction D2 that is transverse to the slot so that ths swivel is is an engagement position. In ths engagement position, a portion of the swivel shank US extends outwardly from foe anchor body 101 and th® lower portion 123 of ths slot Is open. Th® swivel 113 is secured in the engagement position by either placing th® retainer ring 123 or the wedge 131 plug in position, if a ring is used, it Is placed around the shank of the swivel that extends outwardly from th® anchor body. If s wedge plug is used, it is inserted into the lower, open portion of the slot. The swivel is then prevented from being lrtav©rtently disengaged from ths anchor
2017201448 02 Mar 2017
WO 2811/145951
Figure AU2017201448B2_D0006
if a separate cone 200 is befog used, st sssrs be assembled to to® anchor body 201 prior to Installation, or st an surfer time. Additionally, if a separate piste is being ased, it can stea be assembled to th® anchor prior to installation, or at an earfer tim®.
The attechmont and 107 of the anchor is inserted into the drive head 125 so that the teeth 2S elide along th® narrow porta of the slots 137 in ths drive head. Th® anchor body 181 is rotated relative to the drive head to th® engaged position to Agora 11. The shear pin 143 is inserted through th© apertare 144. A shoalder 140, together with th® lb shear pin 143, prevents ths drive head 125 end anchor from being disengaged. Th© drive head end anchor are taten to an Installation site. The drill string 127 and drive . head 123 are operated to drill the anchor into the ground, Once instated, th® drive head 125 is operated in a rovsme direction D4, to break the shear pin 143 and disengag© th® teeth of the drive heed 125 from the teeth 128 of th© anchor.
.15
Th® drive hues 125 is moved to toe position relative to th© anchor shown in Piper® 12, in that position, the teeth 132 ar© aligned with the narrow portion 137 of tee slots. The drive head can then be pelted away front th© anchor, leaving th® anchor and swivel Irsstelted in th© ground, as shown in Figaro 17.
Each of th© components is preferably formed frost a material that will not coos©, or will at feast substantially inhibit, electrolysis or corrosion between th® components. The anchor body 181 and swivel are preferably formed from toe same material Alternatively, the anchor body and swivel may ba formed from different materials, bet 25 which wbstertely inhibit, etectrolysis or corrosion between th® components.
Th© sep®^1® plate smd cone ar© preferably also formed from the same materials as the anchor body and swivel Th© separate plate end cone may also be formed from different materials, hot which substantially inhibit, electrolysis ar corrosion between th® 3d components.
In an embodiment, the anchor body, swivel plate and cone are formed from stainless steel. Alternatively, th© anchor body, swivel, plate or cone may ba formed from other mrfelte materials. The parts of th® anchor assembly may bo galvanized or painted to 35 srfostentlally inhibit electrolysis or corrosion. In other alternatives, th© anchor body, swivel, plate or con® may he formed from carbon fiber or reinforced polymeric
2017201448 02 Mar 2017
WO
Figure AU2017201448B2_D0007
PCT/NZ2011/08Q074 materials.
The rmg and retainer wedge piug are each preferably formed from a suitable inert material. The shear pin is else preferably fanned fem a steteble inert material 5 For example, each of those components may be fomsed from a polymeric materiel, sash as rsyian. Alternatively, each of those components may be formed fem any ether safebfe polymeric material such as polyvinyl chtoride (FVC) ar robter, far example.
The anchor is lighter to transport than previously known anchors, which can reduce 18 transportation costs of the anchors and mates instotefcn easier.
Preferred embodiments of the invention have been described by way of example only and modifications may te made thereto without departing tom ths scope of tee invention. For wrampte, the swivel has been described as having a teb and the anchor IS body has been described as having a complementary slot. However, it will be appreciated that the anchor may have a fab end the swivel may have a complementary slot. The helical member has been described as a single helical member however it will be appreciated that the anchor may have a series of helical members.
The anchor has been particularly described for subsurface installation In an underwater environment. However, it will be appreciated that the anchor may he seed ors the land, far example to attach or secure other objects to the land Wa a line.
2017201448 21 Mar 2019

Claims (5)

1. An anchor assembly for subsurface installation in a ground surface comprising:
a tubular anchor body having a helical element;
a separate anchoring element for engaging with a ground surface, the
5 anchoring element having a helical ground engaging member;
the helical element of the anchor body and the helical ground engaging member of the anchoring element being engageable such that a helically banked face of one of the elements is overlapped with a helically banked face of the other element to form an anchor.
2. An anchor assembly according to claim 1, wherein the helical ground engaging member comprises a tapered helical ground engaging member having a radius that increases from a first insertion end towards an opposite end of the helical member.
15
3. An anchor assembly according to claim 1 or 2, wherein the helical ground engaging member extends outwardly from the anchor about 90 degrees relative to a longitudinal axis of the anchor body.
4. An anchor assembly according to any one of claims 1,2 or 3, wherein the
20 separate anchoring element is substantially conical.
5. An anchor assembly according to any one of the preceding claims, wherein the anchor is suitable to be installed in an underwater environment.
25 6. An anchor assembly according to any one of the preceding claims, wherein the anchor assembly is suitable to be fully submerged in the ground surface.
WO 2011/145951
PCT/NZ2011/000074
2017201448 02 Mar 2017
AU2017201448A 2010-05-21 2017-03-02 Anchors Active AU2017201448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2017201448A AU2017201448B2 (en) 2010-05-21 2017-03-02 Anchors

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NZ585545 2010-05-21
NZ585545A NZ585545A (en) 2010-05-21 2010-05-21 A sub-surface underwater anchor with a helical screw having a releasable swivel line attachment
PCT/NZ2011/000074 WO2011145951A1 (en) 2010-05-21 2011-05-12 Anchors
AU2011255657A AU2011255657B2 (en) 2010-05-21 2011-05-12 Anchors
AU2017201448A AU2017201448B2 (en) 2010-05-21 2017-03-02 Anchors

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU2011255657A Division AU2011255657B2 (en) 2010-05-21 2011-05-12 Anchors

Publications (2)

Publication Number Publication Date
AU2017201448A1 AU2017201448A1 (en) 2017-04-13
AU2017201448B2 true AU2017201448B2 (en) 2019-04-11

Family

ID=44991880

Family Applications (3)

Application Number Title Priority Date Filing Date
AU2011255657A Ceased AU2011255657B2 (en) 2010-05-21 2011-05-12 Anchors
AU2017201449A Abandoned AU2017201449A1 (en) 2010-05-21 2017-03-02 Anchors
AU2017201448A Active AU2017201448B2 (en) 2010-05-21 2017-03-02 Anchors

Family Applications Before (2)

Application Number Title Priority Date Filing Date
AU2011255657A Ceased AU2011255657B2 (en) 2010-05-21 2011-05-12 Anchors
AU2017201449A Abandoned AU2017201449A1 (en) 2010-05-21 2017-03-02 Anchors

Country Status (6)

Country Link
EP (1) EP2572045A4 (en)
AU (3) AU2011255657B2 (en)
CA (1) CA2800032C (en)
CL (1) CL2012003248A1 (en)
NZ (3) NZ590388A (en)
WO (1) WO2011145951A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022180731A1 (en) * 2021-02-25 2022-09-01 日本電信電話株式会社 Anticorrosion system
CN115245139B (en) * 2021-11-23 2023-08-01 浙江海洋大学 Pile anchor for marine culture facilities

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234907A (en) * 1939-10-06 1941-03-11 Malleable Iron Fittings Co Screw anchor
US3382628A (en) * 1965-09-28 1968-05-14 Waite William Edmund Ground anchor
JPH0542326U (en) * 1991-11-11 1993-06-08 日立電線株式会社 Connection of the screw anchor pile
JP2009091807A (en) * 2007-10-09 2009-04-30 Kurimoto Ltd Rotary penetration pile

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1027187A (en) * 1950-11-03 1953-05-08 Improvements to methods and devices for placing piles in soft ground
US3745774A (en) * 1970-07-27 1973-07-17 Offshore Co Underwater anchor structure and method of setting same
GB1390780A (en) * 1972-12-14 1975-04-16 Mcdowall C A Mooring anchor
FR2478158A1 (en) * 1980-03-14 1981-09-18 Maurey Jacques Round hollow section self-boring pile - uses spiral ramped cutters on leading edge and used as fence post or cable-anchor
US4943188A (en) * 1988-05-20 1990-07-24 Lockheed Corporation Rotating lug anchor connector
WO1993012312A1 (en) * 1991-12-12 1993-06-24 Instant Foundations (Aust.) Pty. Ltd. Ground anchors
US6092484A (en) * 1999-06-23 2000-07-25 Babin; Hugh D. Marine anchor system
JP4149299B2 (en) * 2002-11-08 2008-09-10 旭テック株式会社 Electric pole grounding device and construction method thereof
US7117812B2 (en) 2003-10-30 2006-10-10 Delmar Systems, Inc. Apparatus and method for gravity anchor installation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234907A (en) * 1939-10-06 1941-03-11 Malleable Iron Fittings Co Screw anchor
US3382628A (en) * 1965-09-28 1968-05-14 Waite William Edmund Ground anchor
JPH0542326U (en) * 1991-11-11 1993-06-08 日立電線株式会社 Connection of the screw anchor pile
JP2009091807A (en) * 2007-10-09 2009-04-30 Kurimoto Ltd Rotary penetration pile

Also Published As

Publication number Publication date
WO2011145951A1 (en) 2011-11-24
CA2800032C (en) 2018-08-28
AU2011255657B2 (en) 2016-12-22
CA2800032A1 (en) 2011-11-24
NZ590388A (en) 2012-08-31
NZ590392A (en) 2012-08-31
EP2572045A4 (en) 2017-04-19
NZ585545A (en) 2011-09-30
CL2012003248A1 (en) 2013-10-11
EP2572045A1 (en) 2013-03-27
AU2017201448A1 (en) 2017-04-13
AU2017201449A1 (en) 2017-03-30
AU2011255657A1 (en) 2012-12-06

Similar Documents

Publication Publication Date Title
US6368021B1 (en) Pile and method for installing same
US5148641A (en) Finned sleeve for driven type survey monuments
AU2017201448B2 (en) Anchors
GB1593347A (en) Marine riser conduit section coupling means
US9114858B2 (en) Subsea anchoring assembly
US20100135729A1 (en) Mooring
KR102056616B1 (en) Detachable device of follower and pile construction method
US4417830A (en) Connector assembly
US8388267B2 (en) Ballasted driven pile
US20090277368A1 (en) Boat anchor
US3984991A (en) Anchor and method of setting anchor
WO2007101311A1 (en) Sea anchor
US5755533A (en) Tendon foundation guide cone assembly and method
NZ590391A (en) A sub-surface underwater anchor in two parts having a removable helical screw attached to a body
JP7495478B2 (en) Fixtures and installation methods
EP2444313A2 (en) Anchor with means for securing to sea bed and for facilitating retrieval
JP2009270403A (en) Clutch body for use in burial device for hollow pile
US6915754B2 (en) Apparatus and method of operation for quick anchoring equipment
WO2021118366A1 (en) A barrier device for assembly onto an eye-bolt and a method of assembling said barrier device
WO2024013198A1 (en) Installation follower for installing plate anchors for floating wind turbines of a wind farm
NZ561697A (en) Screw in ship anchor with adjustable mooring collar

Legal Events

Date Code Title Description
HB Alteration of name in register

Owner name: BAKER, M.

Free format text: FORMER NAME(S): BAKER, DONNA; BAKER, MICHAEL; NEW ZEALAND TRUSTEE SERVICES

Owner name: BAKER, D.

Free format text: FORMER NAME(S): BAKER, DONNA; BAKER, MICHAEL; NEW ZEALAND TRUSTEE SERVICES

Owner name: NEW ZEALAND TRUSTEE SERVICES LIMITED

Free format text: FORMER NAME(S): BAKER, DONNA; BAKER, MICHAEL; NEW ZEALAND TRUSTEE SERVICES

MK4 Application lapsed section 142(2)(d) - no continuation fee paid for the application
TH Corrigenda

Free format text: IN VOL 31 , NO 48 , PAGE(S) 6906 UNDER THE HEADING APPLICATIONS LAPSED, REFUSED OR WITHDRAWN, PATENTS CEASED OR EXPIRED - 2017 DELETE ALL REFERENCE TO 2017201448.

FGA Letters patent sealed or granted (standard patent)