CA1235280A - Ground anchor for rigidly supporting above ground structure - Google Patents
Ground anchor for rigidly supporting above ground structureInfo
- Publication number
- CA1235280A CA1235280A CA000472271A CA472271A CA1235280A CA 1235280 A CA1235280 A CA 1235280A CA 000472271 A CA000472271 A CA 000472271A CA 472271 A CA472271 A CA 472271A CA 1235280 A CA1235280 A CA 1235280A
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- Canada
- Prior art keywords
- shaft
- ground
- sleeve
- anchor
- shaft means
- Prior art date
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Abstract
"GROUND ANCHOR FOR RIGIDLY SUPPORTING ABOVE GROUND
STRUCTURE"
ABSTRACT OF THE DISCLOSURE
A ground anchor particularly for supporting a satelite dish includes a frame formed from a plurality of tubular arms which extend out to apexes of the frame in a horizontal plane. Each apex is attached to a respective ground anchor in the form of a screw flight coupled to a shaft which can be screwed into the ground with the shaft vertical together with a wedge member having a sleeve for passing over the shaft and a plurality of fins extending outwardly from the sleeve so that the wedge member can be hammered onto the shaft into the ground at the surface to prevent lateral shifting of the shaft. The coupling be-tween the anchor and the frame is provided by a sleeve which passes over the shaft into engagement with the wedge and a scaffolding-type wrapping clamp which extends around the tubular arm and around the sleeve so as to clamp the arm to the sleeve at positions longitudinally adjustable of the sleeve.
STRUCTURE"
ABSTRACT OF THE DISCLOSURE
A ground anchor particularly for supporting a satelite dish includes a frame formed from a plurality of tubular arms which extend out to apexes of the frame in a horizontal plane. Each apex is attached to a respective ground anchor in the form of a screw flight coupled to a shaft which can be screwed into the ground with the shaft vertical together with a wedge member having a sleeve for passing over the shaft and a plurality of fins extending outwardly from the sleeve so that the wedge member can be hammered onto the shaft into the ground at the surface to prevent lateral shifting of the shaft. The coupling be-tween the anchor and the frame is provided by a sleeve which passes over the shaft into engagement with the wedge and a scaffolding-type wrapping clamp which extends around the tubular arm and around the sleeve so as to clamp the arm to the sleeve at positions longitudinally adjustable of the sleeve.
Description
~352~
GROUND ANCHOR FOR RIGIDLY SUPPORTING ABOVE GROUND
STRUCTURE
BACKGROUND OF THE INVENTION
This invention relates to a ground anchor for rigidly supporting an above ground structure for example a satelite dish or antenna.
Satelite dishes are becoming increasingly popular for the individual householder who wants to receive various television signals from satelites mounted in gestationary orbit on the equitorial plane. In order to set the dish in proper alignment to a satelite and also to scan the dish from one satelite to the next a scanning arc can be one set so that the dish traverses from/satelite to the next.
Once this scanning arc has been set it is important that it remain constant so that the dish can be accurately tuned to a chosen one of the satelites. The scanning arc requires therefore that the base of the dish which supports the dish relative to the ground remains in constant position regardless of any movement of the ground. Generally there is provided therefore a post which is set vertical and must remain vertical if the dish is to remain in its proper scanning arc.
Of course simple inferior mounting arrangements can be provided merely by placing the support on the ground but this will quickly be found to be unsatisfactory in ~:3~ 8~
that the dish can easily move in the wind particularly ~ in view oE the large wind resistance of the larger dishes.
One obvious arrangement for overcoming the problem ; of movement is to simply mount the dish on a suitable sup-port embedded in concrete in the ground.
This arrangement however is unsatisfactory in that it is difficult and expensive to obtain sufficient depth in the structure to avoid movement of the structure caused by changes in moisture content of the soil or in freezing of the soil. This is a particular problem in colder climates where the ground is subject to freezing over considerable depth during the winter months which can often cause heaving of the ground at the upper levels if the support is not buried to a sufficient depth.
It is one object of the present invention, there-fore, to provide a ground anchor for supporting an above ground structure which can be simply and inexpensively mounted in the ground to suitable depth to prevent movement.
Although the anchoring arrangement is particularly suitable for satelite dishes it can of course be used in other circumstances where an above ground structure is required to remain in fixed position relative to the ground.
According to the invention, therefore, there is provided a method of forming a rigid anchor for an above ground structure the method comprising screwing into the ~2~ 80 ground an anchor having an elongate shaft carrying a screw - flight which engages the ground to screw the shaft down-wardly into the ground and applying a ~edge member having portions extending laterally from the shaft to the shaft at a position such that the wedge member extends into the ground adjacent the surface thereof.
According to the second aspect of the invention there is provided an anchor member comprising an anchor having an elongate shaft and a screw flight by which the shaft can be screwed into the ground and a wedge member for attachment to the shaft such that portions of the wedge member extend laterally from the shaft.
According to a third aspect of the invention there is provided an anchor assembly comprising a plurality of anchors each having an associated wedge member as explained above and a framework having a polygonal base for inter-connecting the anchors arranged at the apexes of the polygon and means for attaching the base to the anchors.
In the preferred arrangement there are three such anchors and associated wedge members. The anchors can firstly be screwed into the ground through a jig which locates the shaft and retains it vertical as the screw flight is screwed into the ground. Then the wedge member is applied to the portion of the shaft extending out of the ground and the wedge is forced into the ground to sur-~ ~:3~;i28~
round the shaft and retain the upper portion of the shaft - against lateral movement relative to the ground.
Preferably the wedge member comprises a tube or sleeve for closely surrounding the shaft and the number of radial wings extending outwardly from the tube. The wings act to hold the shaft against lateral movement relative to the soil. The wings can converge to a point at the bottom of the tube or sleeve so that the wedge member can simply be hammered onto the shaft and into the ground.
With the three shafts and associated wedge members fixed in position the above ground framework can be attached to the upstanding portion of the shafts for example by pipe couplings o the type commonly used in scaffolding arrangements. The framework can then of course be levelled.
The arrangement also allows the depth of the anchor to be adjusted as required. Thus if an anchor at one apex of the triangle or polygon en%ages a substantial obstacle and thus remains projecting above the ground by a greater length than the remaining shafts, the wedge member can still be applied to the shaft to the required depth by again hammering over the shaft and then the excessive amount of the shaft can be cut off so as to provide three or more vertical shaft portions extending upwardly from the ground sufficiently just to receive the framework.
One embodiment of the invention will now be des-~23~i233~
cribed in more detail in conjunction with the accompanying ~ drawings in which:
Figure 1 is a side elevational view of an anchor assembly in position in the ground supporting a vertical shaft above the ground for receiving a satelite dish.
Figure 2 is a side elevational view taken at right angles to the view of Figure 1.
Figure 3 is a plan view of the assembly of Figure 1. _ In the drawings like characters of reference indicate corresponding parts in the different figures.
The assembly comprises three separate anchors 11 arranged at the apexes of an equilateral triangle as shown in Figure 3 and supporting a central shaft 1 for receiving a satelite dish of conventional construction.
Each anchor 11 comprises a shaft 3 which may be tubular as required depending upon the dimensions employed in accordance with sound engineering practice. The shart 3 is of substantially the length required to provide a suitable anchoring depth in the soil conditions prevailing in the area concerned and receives at its lower end a screw flight 2 mounted on a stub shaft 12 by nut and bolt con-nections 4. The shaft 12 and screw flight 2 is a commercial item which can be purchased for example from Dominion Bridge of Winnipeg, Manitoba. The screw flight is available in ~2;~
varying diameters for varying conditions and can, as known, - be used to screw the flight and the accompanying shaft into the ground by rotation of the shaft 3 by suitable and available equipment as will be known to one skilled in the art.
Normally such anchors are used in an inclined direction to provide an anchor for a cable for example for supporting poles for power lines and the like.
However in this case the shafts 3 are located by a jig which is effectively a plate with holes at the required locations and are screwed vertically into the ground to the required depth. Such a depth can be of the order of 5 ft. depending of course on soil conditions but this depth can vary within wide limits. Should one of the anchors engage a substantial obstacle for example large rock, the rock can act to retain this anchor in the required position and therefore it is not necessary to relocate the whole equipment and the anchor can be screwed to the maximum depth possible and then left with part of the shaft 3 extending above the shaft 3 of the two other anchors.
A wedge member comprises a tube or sleeve 13 which can sliding receive the shaft 3 and which is consider-ably shorter than the shaft 3. Attached to the tube 13 is a plurality of radially extending wings 7. As shown there are three such wings 7 arranged at 120 spacing and extending outwardly from the tube without any angular pro-- jections. Thus the wedge member effectively comprises just the wings 7 which extend outwardly to engage the ground.
Approximately the lower half of each wing 7 is chamfered inwardly to form a point at the bottom of the tube 13 so that the wings can be driven into the ground. This can best be achieved by passing a pipe length over the upper end of the shaft 3 and resting it on top of the tube 13 in end abutting relationship and then applying hammer force to the end of the pipe length to drive the tube 13 and wings7into the ground. Since the wings/are symmetrical and there are no angular projections the wings 7 can be simply driven into the ground and there is no turning force and no resultant lateral force to shift the position of the shaft 3. It is of course necessary to remove the jig from the shaft 3 before applying the wedges but the wedges do not in practice materially affect the position of the shaft 3 and therefore it remains in position for receiving the framework of the post 1.
When driven into position slightly beneath the surface of the ground, the wedge members can be bolted to the shaft 3 by bolts 10 so as retain the position.
With an anchor of the order of 5 ft. in length, the wedge can be of the order of 1 ft. in depth with wings 7 of the order of 10 in. to 1 ft. in width. This means ~3~ 8(~
that the shaft 3 is anchored against vertical movement ~ by the screw flight 2 which is positioned sufficiently deep to prevent movement on heaving of the upper layer of soil. Lateral movement of the upper end of the shaft 3 is prevented by the engagement of the wings 7 with the soil surrounding the upper end. Any upward heaving of the upper layers of soil can slip by the wings 7 and thus does not affect the vertical position of the shaft 3.
The lateral position of each shaft 3 and thereof of the total structure is held fixed by the wedge members and therefore there is no working of the shafts 3 in the ground caused by wind pressure on the satelite dish supported on the post 1.
Effectively therefore the wedge members only control lateral movement of the surface but without their presence bending of the shafts 3 could occur and movement of the soil around the shafts thus allowing the post 1 to tilt from the vertical. Since the wedge members are not fixed to the shafts 3 their positi.on can be adjusted so as to take up the required position just beneath the surface of the ground regardless of the position to which the screw flight 2 has been screwed.
With each anchor fixed in position as explained, the pipe length against which the hammering force is applied can be removed and a further sleeve 8 slipped over the ~Z;3~ 8~
g exposed portion of the shaft 3 into engagement with the - upper face of the sleeve 13 of the wedge member. At this point the exposed portions of the shaft 3 can be cut to length if required so that effectively the same amount of the shaft 3 projects above the sleeves 8 to provide a pleasing appearance and to accommodate the varying depth to which the screw flights 2 have been screwed.
The ~ramework for the post 1 comprises three tubes 14 welded to the bottom of the post and extending radially outwardly therefrom at right angles thereto so as to lie in a horizontal plane~ In addition the posts 14 are interconnected by bracing members 1511ying again in the horizontal plane of the base of the post 1. Finally upwardly inclined bracing members 16 extend from a position at the mid-height of the post 1 to substantially the outer end of the supports 14. This provides a rigid structure for retaining the post 1 in a vertical orientation. The supports 14 can be coupled to the sleeves 8 by scaffolding coupling members of the friction fit t~pe. Various coupling arrangements can be used by the preferred arrangement is known as a"Rota-lock"which can be obtained commercially for example from Up-Right Scaffolds Limited of Winnipeg, Manitoba. Such a device comprises a wire loop which couples the hori~ontal member 14 to the vertical member 8 by looping around each of the members twice. Such a device can be ~Z3~
slid onto one end of each of the members into the required position and then can be tightened into position by jacking apart either the members themselves or the interconnection between one of the loops and one of the members. The jacking member is not shown in the drawings but such an arrangement will be well known to one skilled in the art. Thus the framework can be accurately levelled so that the supports 14 are properly positioned in a horizontal plane by adjust-ing one or two of the couplings 15. When adjusted the post 1 stands in a vertical direction and will remain in that direction regardless of normal movement of the earth and regardless of working of the structure caused by gust-ing winds.
GROUND ANCHOR FOR RIGIDLY SUPPORTING ABOVE GROUND
STRUCTURE
BACKGROUND OF THE INVENTION
This invention relates to a ground anchor for rigidly supporting an above ground structure for example a satelite dish or antenna.
Satelite dishes are becoming increasingly popular for the individual householder who wants to receive various television signals from satelites mounted in gestationary orbit on the equitorial plane. In order to set the dish in proper alignment to a satelite and also to scan the dish from one satelite to the next a scanning arc can be one set so that the dish traverses from/satelite to the next.
Once this scanning arc has been set it is important that it remain constant so that the dish can be accurately tuned to a chosen one of the satelites. The scanning arc requires therefore that the base of the dish which supports the dish relative to the ground remains in constant position regardless of any movement of the ground. Generally there is provided therefore a post which is set vertical and must remain vertical if the dish is to remain in its proper scanning arc.
Of course simple inferior mounting arrangements can be provided merely by placing the support on the ground but this will quickly be found to be unsatisfactory in ~:3~ 8~
that the dish can easily move in the wind particularly ~ in view oE the large wind resistance of the larger dishes.
One obvious arrangement for overcoming the problem ; of movement is to simply mount the dish on a suitable sup-port embedded in concrete in the ground.
This arrangement however is unsatisfactory in that it is difficult and expensive to obtain sufficient depth in the structure to avoid movement of the structure caused by changes in moisture content of the soil or in freezing of the soil. This is a particular problem in colder climates where the ground is subject to freezing over considerable depth during the winter months which can often cause heaving of the ground at the upper levels if the support is not buried to a sufficient depth.
It is one object of the present invention, there-fore, to provide a ground anchor for supporting an above ground structure which can be simply and inexpensively mounted in the ground to suitable depth to prevent movement.
Although the anchoring arrangement is particularly suitable for satelite dishes it can of course be used in other circumstances where an above ground structure is required to remain in fixed position relative to the ground.
According to the invention, therefore, there is provided a method of forming a rigid anchor for an above ground structure the method comprising screwing into the ~2~ 80 ground an anchor having an elongate shaft carrying a screw - flight which engages the ground to screw the shaft down-wardly into the ground and applying a ~edge member having portions extending laterally from the shaft to the shaft at a position such that the wedge member extends into the ground adjacent the surface thereof.
According to the second aspect of the invention there is provided an anchor member comprising an anchor having an elongate shaft and a screw flight by which the shaft can be screwed into the ground and a wedge member for attachment to the shaft such that portions of the wedge member extend laterally from the shaft.
According to a third aspect of the invention there is provided an anchor assembly comprising a plurality of anchors each having an associated wedge member as explained above and a framework having a polygonal base for inter-connecting the anchors arranged at the apexes of the polygon and means for attaching the base to the anchors.
In the preferred arrangement there are three such anchors and associated wedge members. The anchors can firstly be screwed into the ground through a jig which locates the shaft and retains it vertical as the screw flight is screwed into the ground. Then the wedge member is applied to the portion of the shaft extending out of the ground and the wedge is forced into the ground to sur-~ ~:3~;i28~
round the shaft and retain the upper portion of the shaft - against lateral movement relative to the ground.
Preferably the wedge member comprises a tube or sleeve for closely surrounding the shaft and the number of radial wings extending outwardly from the tube. The wings act to hold the shaft against lateral movement relative to the soil. The wings can converge to a point at the bottom of the tube or sleeve so that the wedge member can simply be hammered onto the shaft and into the ground.
With the three shafts and associated wedge members fixed in position the above ground framework can be attached to the upstanding portion of the shafts for example by pipe couplings o the type commonly used in scaffolding arrangements. The framework can then of course be levelled.
The arrangement also allows the depth of the anchor to be adjusted as required. Thus if an anchor at one apex of the triangle or polygon en%ages a substantial obstacle and thus remains projecting above the ground by a greater length than the remaining shafts, the wedge member can still be applied to the shaft to the required depth by again hammering over the shaft and then the excessive amount of the shaft can be cut off so as to provide three or more vertical shaft portions extending upwardly from the ground sufficiently just to receive the framework.
One embodiment of the invention will now be des-~23~i233~
cribed in more detail in conjunction with the accompanying ~ drawings in which:
Figure 1 is a side elevational view of an anchor assembly in position in the ground supporting a vertical shaft above the ground for receiving a satelite dish.
Figure 2 is a side elevational view taken at right angles to the view of Figure 1.
Figure 3 is a plan view of the assembly of Figure 1. _ In the drawings like characters of reference indicate corresponding parts in the different figures.
The assembly comprises three separate anchors 11 arranged at the apexes of an equilateral triangle as shown in Figure 3 and supporting a central shaft 1 for receiving a satelite dish of conventional construction.
Each anchor 11 comprises a shaft 3 which may be tubular as required depending upon the dimensions employed in accordance with sound engineering practice. The shart 3 is of substantially the length required to provide a suitable anchoring depth in the soil conditions prevailing in the area concerned and receives at its lower end a screw flight 2 mounted on a stub shaft 12 by nut and bolt con-nections 4. The shaft 12 and screw flight 2 is a commercial item which can be purchased for example from Dominion Bridge of Winnipeg, Manitoba. The screw flight is available in ~2;~
varying diameters for varying conditions and can, as known, - be used to screw the flight and the accompanying shaft into the ground by rotation of the shaft 3 by suitable and available equipment as will be known to one skilled in the art.
Normally such anchors are used in an inclined direction to provide an anchor for a cable for example for supporting poles for power lines and the like.
However in this case the shafts 3 are located by a jig which is effectively a plate with holes at the required locations and are screwed vertically into the ground to the required depth. Such a depth can be of the order of 5 ft. depending of course on soil conditions but this depth can vary within wide limits. Should one of the anchors engage a substantial obstacle for example large rock, the rock can act to retain this anchor in the required position and therefore it is not necessary to relocate the whole equipment and the anchor can be screwed to the maximum depth possible and then left with part of the shaft 3 extending above the shaft 3 of the two other anchors.
A wedge member comprises a tube or sleeve 13 which can sliding receive the shaft 3 and which is consider-ably shorter than the shaft 3. Attached to the tube 13 is a plurality of radially extending wings 7. As shown there are three such wings 7 arranged at 120 spacing and extending outwardly from the tube without any angular pro-- jections. Thus the wedge member effectively comprises just the wings 7 which extend outwardly to engage the ground.
Approximately the lower half of each wing 7 is chamfered inwardly to form a point at the bottom of the tube 13 so that the wings can be driven into the ground. This can best be achieved by passing a pipe length over the upper end of the shaft 3 and resting it on top of the tube 13 in end abutting relationship and then applying hammer force to the end of the pipe length to drive the tube 13 and wings7into the ground. Since the wings/are symmetrical and there are no angular projections the wings 7 can be simply driven into the ground and there is no turning force and no resultant lateral force to shift the position of the shaft 3. It is of course necessary to remove the jig from the shaft 3 before applying the wedges but the wedges do not in practice materially affect the position of the shaft 3 and therefore it remains in position for receiving the framework of the post 1.
When driven into position slightly beneath the surface of the ground, the wedge members can be bolted to the shaft 3 by bolts 10 so as retain the position.
With an anchor of the order of 5 ft. in length, the wedge can be of the order of 1 ft. in depth with wings 7 of the order of 10 in. to 1 ft. in width. This means ~3~ 8(~
that the shaft 3 is anchored against vertical movement ~ by the screw flight 2 which is positioned sufficiently deep to prevent movement on heaving of the upper layer of soil. Lateral movement of the upper end of the shaft 3 is prevented by the engagement of the wings 7 with the soil surrounding the upper end. Any upward heaving of the upper layers of soil can slip by the wings 7 and thus does not affect the vertical position of the shaft 3.
The lateral position of each shaft 3 and thereof of the total structure is held fixed by the wedge members and therefore there is no working of the shafts 3 in the ground caused by wind pressure on the satelite dish supported on the post 1.
Effectively therefore the wedge members only control lateral movement of the surface but without their presence bending of the shafts 3 could occur and movement of the soil around the shafts thus allowing the post 1 to tilt from the vertical. Since the wedge members are not fixed to the shafts 3 their positi.on can be adjusted so as to take up the required position just beneath the surface of the ground regardless of the position to which the screw flight 2 has been screwed.
With each anchor fixed in position as explained, the pipe length against which the hammering force is applied can be removed and a further sleeve 8 slipped over the ~Z;3~ 8~
g exposed portion of the shaft 3 into engagement with the - upper face of the sleeve 13 of the wedge member. At this point the exposed portions of the shaft 3 can be cut to length if required so that effectively the same amount of the shaft 3 projects above the sleeves 8 to provide a pleasing appearance and to accommodate the varying depth to which the screw flights 2 have been screwed.
The ~ramework for the post 1 comprises three tubes 14 welded to the bottom of the post and extending radially outwardly therefrom at right angles thereto so as to lie in a horizontal plane~ In addition the posts 14 are interconnected by bracing members 1511ying again in the horizontal plane of the base of the post 1. Finally upwardly inclined bracing members 16 extend from a position at the mid-height of the post 1 to substantially the outer end of the supports 14. This provides a rigid structure for retaining the post 1 in a vertical orientation. The supports 14 can be coupled to the sleeves 8 by scaffolding coupling members of the friction fit t~pe. Various coupling arrangements can be used by the preferred arrangement is known as a"Rota-lock"which can be obtained commercially for example from Up-Right Scaffolds Limited of Winnipeg, Manitoba. Such a device comprises a wire loop which couples the hori~ontal member 14 to the vertical member 8 by looping around each of the members twice. Such a device can be ~Z3~
slid onto one end of each of the members into the required position and then can be tightened into position by jacking apart either the members themselves or the interconnection between one of the loops and one of the members. The jacking member is not shown in the drawings but such an arrangement will be well known to one skilled in the art. Thus the framework can be accurately levelled so that the supports 14 are properly positioned in a horizontal plane by adjust-ing one or two of the couplings 15. When adjusted the post 1 stands in a vertical direction and will remain in that direction regardless of normal movement of the earth and regardless of working of the structure caused by gust-ing winds.
Claims
CLAIMS:
(1) A ground anchor for rigidly supporting an above ground structure comprising a plurality of anchor members each for separately engaging the ground and a frame defining a base having a plurality of spaced loca-tions each for engaging a respective one of the anchor members and coupling means for rigidly coupling each loca-tion to its respective anchor member, each anchor member comprising shaft means, a screw flight member arranged for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remain exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means said wedge means having fins for preventing lateral shifting of the shaft means relative to the ground.
(2) The invention according to Claim 1 wherein the wedge means is separate from and slidable relative to said shaft means.
(3) The invention according to Claim 1 wherein the wedge means comprises a sleeve portion fro surrounding the shaft means in slidable relation thereto and a plura-lity of fins extending outwardly from said sleeve portion.
(4) The invention according to Claim 3 wherein each fin comprises solely a flat substantially radially ex-tending plate.
(5) The invention according to Claim 4 wherein the fins have a lower surface inclined inwardly and down-wardly whereby the fins converge substantially to a point at a bottom apex of said wedge means.
(6) The invention according to Claim 1 wherein the coupling means is arranged to provide adjustment of the location in a direction longitudinal of said respective shaft means.
(7) The invention according to Claim 6 wherein said coupling means comprises an external clamp means for clamping said location to said respective anchor member in side by side relation thereto.
(8) The invention according to Claim 7 wherein said base include a plurality of arms extending outwardly from a central position to a respective apex, each arm be-ing tubular and wherein the coupling means comprises a sleeve for passing over said shaft means at said exposed end and releasible clamp means for wrapping around said tubular arm and around said coupling means sleeve so as to clamp said arm to said sleeve in a mutually at right angles side by side relation whereby the position of the arm relative to the sleeve can be adjusted longitudinally of the sleeve.
(9) A ground anchor member for rigidly support-ing an above ground structure comprising a frame having a planar base for lying substantially horizontal in an assem-blied position, said base providing a plurality of arms ex-tending outwardly from a central position to a respective apex, a plurality of anchor members each comprising shaft means and a screw flight member arranged for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remains exposed from the ground, and coupling means for rigidly coupling each arm at its apex to a re-spective anchor member, each said coupling means being arranged to provide adjustment of the respective arm longi-tudinally of said respective shaft means.
(10) A ground anchor member for rigidly sup-porting an above ground structure comprising a frame hav-ing a planar base for lying substantially horizontal in an assemblied position, said base including a plurality of arms extending outwardly from a central position to a re-spective apex, each arm being tubular, a plurality of anchor members each for separately engaging the ground and each comprising shaft means, a screw flight member arranged for rotation with said shaft means whereby the shaft and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation and such that a portion of the shaft remains exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means, said wedge means comprising a sleeve for passing over the shaft in sliding relation there-to and a plurality of fins extending outwardly from said sleeve for preventing lateral shifting of the shaft means relative to the ground, and coupling means for rigidly coupling each arm at its apex to a respective anchor member, each coupling means comprising a sleeve for passing over said shaft means at said exposed end such that one end of said coupling means sleeve abuts one end of said wedge means sleeve and releasible clamp means for wrapping around said tubular arm and around said coupling means sleeve so as to clamp said arm to said sleeve in a mutually at right angles side by side relation whereby the position of the arm relative to the sleeve can be adjusted longitudinally of the sleeve.
(11) A ground anchor for rigidly supporting an above ground structure comprising an elongate shaft means, a screw flight member arranged at a lower end of the shaft means for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remains exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means said wedge means comprising a sleeve arranged to surround the shaft means for rotation therearound and at least three fins for preventing lateral shifting of the shaft means relative to the ground, each said fin being flat and extending outwardly from the sleeve with an inner edge welded to the sleeve so as to engage the sleeve along the full length of the fin and an outer edge having a first portion parallel to the sleeve and a second lower portion converging inwardly toward the bottom of the sleeve.
(1) A ground anchor for rigidly supporting an above ground structure comprising a plurality of anchor members each for separately engaging the ground and a frame defining a base having a plurality of spaced loca-tions each for engaging a respective one of the anchor members and coupling means for rigidly coupling each loca-tion to its respective anchor member, each anchor member comprising shaft means, a screw flight member arranged for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remain exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means said wedge means having fins for preventing lateral shifting of the shaft means relative to the ground.
(2) The invention according to Claim 1 wherein the wedge means is separate from and slidable relative to said shaft means.
(3) The invention according to Claim 1 wherein the wedge means comprises a sleeve portion fro surrounding the shaft means in slidable relation thereto and a plura-lity of fins extending outwardly from said sleeve portion.
(4) The invention according to Claim 3 wherein each fin comprises solely a flat substantially radially ex-tending plate.
(5) The invention according to Claim 4 wherein the fins have a lower surface inclined inwardly and down-wardly whereby the fins converge substantially to a point at a bottom apex of said wedge means.
(6) The invention according to Claim 1 wherein the coupling means is arranged to provide adjustment of the location in a direction longitudinal of said respective shaft means.
(7) The invention according to Claim 6 wherein said coupling means comprises an external clamp means for clamping said location to said respective anchor member in side by side relation thereto.
(8) The invention according to Claim 7 wherein said base include a plurality of arms extending outwardly from a central position to a respective apex, each arm be-ing tubular and wherein the coupling means comprises a sleeve for passing over said shaft means at said exposed end and releasible clamp means for wrapping around said tubular arm and around said coupling means sleeve so as to clamp said arm to said sleeve in a mutually at right angles side by side relation whereby the position of the arm relative to the sleeve can be adjusted longitudinally of the sleeve.
(9) A ground anchor member for rigidly support-ing an above ground structure comprising a frame having a planar base for lying substantially horizontal in an assem-blied position, said base providing a plurality of arms ex-tending outwardly from a central position to a respective apex, a plurality of anchor members each comprising shaft means and a screw flight member arranged for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remains exposed from the ground, and coupling means for rigidly coupling each arm at its apex to a re-spective anchor member, each said coupling means being arranged to provide adjustment of the respective arm longi-tudinally of said respective shaft means.
(10) A ground anchor member for rigidly sup-porting an above ground structure comprising a frame hav-ing a planar base for lying substantially horizontal in an assemblied position, said base including a plurality of arms extending outwardly from a central position to a re-spective apex, each arm being tubular, a plurality of anchor members each for separately engaging the ground and each comprising shaft means, a screw flight member arranged for rotation with said shaft means whereby the shaft and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation and such that a portion of the shaft remains exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means, said wedge means comprising a sleeve for passing over the shaft in sliding relation there-to and a plurality of fins extending outwardly from said sleeve for preventing lateral shifting of the shaft means relative to the ground, and coupling means for rigidly coupling each arm at its apex to a respective anchor member, each coupling means comprising a sleeve for passing over said shaft means at said exposed end such that one end of said coupling means sleeve abuts one end of said wedge means sleeve and releasible clamp means for wrapping around said tubular arm and around said coupling means sleeve so as to clamp said arm to said sleeve in a mutually at right angles side by side relation whereby the position of the arm relative to the sleeve can be adjusted longitudinally of the sleeve.
(11) A ground anchor for rigidly supporting an above ground structure comprising an elongate shaft means, a screw flight member arranged at a lower end of the shaft means for rotation with said shaft means whereby the shaft means and screw flight member can be screwed into the ground with the shaft in a substantially vertical orientation such that a portion of the shaft remains exposed from the ground and wedge means for driving into the ground at the exposed portion of the shaft means said wedge means comprising a sleeve arranged to surround the shaft means for rotation therearound and at least three fins for preventing lateral shifting of the shaft means relative to the ground, each said fin being flat and extending outwardly from the sleeve with an inner edge welded to the sleeve so as to engage the sleeve along the full length of the fin and an outer edge having a first portion parallel to the sleeve and a second lower portion converging inwardly toward the bottom of the sleeve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8,401,186 | 1984-01-17 | ||
| GB848401186A GB8401186D0 (en) | 1984-01-17 | 1984-01-17 | Ground anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1235280A true CA1235280A (en) | 1988-04-19 |
Family
ID=10555104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000472271A Expired CA1235280A (en) | 1984-01-17 | 1985-01-17 | Ground anchor for rigidly supporting above ground structure |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1235280A (en) |
| GB (1) | GB8401186D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263622B1 (en) | 1998-04-30 | 2001-07-24 | Craig Griffin | Ground anchor with floating stabilizer |
-
1984
- 1984-01-17 GB GB848401186A patent/GB8401186D0/en active Pending
-
1985
- 1985-01-17 CA CA000472271A patent/CA1235280A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263622B1 (en) | 1998-04-30 | 2001-07-24 | Craig Griffin | Ground anchor with floating stabilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8401186D0 (en) | 1984-02-22 |
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| Date | Code | Title | Description |
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| MKEX | Expiry |