CA2301352A1 - Sleeve bolt - Google Patents
Sleeve bolt Download PDFInfo
- Publication number
- CA2301352A1 CA2301352A1 CA 2301352 CA2301352A CA2301352A1 CA 2301352 A1 CA2301352 A1 CA 2301352A1 CA 2301352 CA2301352 CA 2301352 CA 2301352 A CA2301352 A CA 2301352A CA 2301352 A1 CA2301352 A1 CA 2301352A1
- Authority
- CA
- Canada
- Prior art keywords
- expansion
- stem
- expansion wedge
- expander
- wall
- 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.)
- Abandoned
Links
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims abstract 7
- 238000000034 method Methods 0.000 claims 13
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
Abstract
A sleeve bolt for insertion in a hole delimited by a wall comprises a threaded fastener and an expansion member. The threaded fastener has a stem that includes a proximal cylindrical shank and a distal threaded section. The shank has substantially the diameter of the hole defines at a distal end thereof a conical expander portion. The expansion member comprises a distal threaded member and a proximal expansion wedge, the threaded member being threadably engaged to the threaded section of the stem. The expansion wedge has a proximal end adapted, upon axial displacement of the expansion member towards the shank resulting from a rotation of the stem, to engage the conical expander portion such as to expand the proximal end of the expansion wedge outwardly into engagement with the wall. The expansion wedge fractionally engages the wall upon introduction of the stem in the hole, whereas the threaded member is spaced from the wall. The threaded member comprises a distal conical section which tapers towards the expansion wedge and which is adapted to displace towards and relative to both the expander portion and the expansion wedge such that the conical section causes a distal end of the expansion wedge to expand outwardly into engagement with the wall.
Description
SLEEVE BOLT
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to fasteners and, more particularly, to expandable fasteners for mounting to concrete structures, and the like.
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to fasteners and, more particularly, to expandable fasteners for mounting to concrete structures, and the like.
2. Description of the Prior Art Expandable anchors of many different types are already known. More particularly, expandable anchors have been developed for insertion into a hole formed in a support structure such that an expansion sleeve of the anchor may be selectively expanded into frictional contact with the inside peripheral surface of the hole such that the anchor becomes fractionally anchored in the support structure. Typically, the expandable anchor includes an elongated expander member having a threaded first end and a flared second end opposite the first end with a cylindrical surface extending between the first and second ends around which there is provided the aforementioned expansion sleeve which generally has the shape of a cylinder. The threaded first end is like a headless screw and extends outwardly of the support structure once the expandable anchor is positioned in the hole thereof. A nut threaded on the visible part of the threaded first end may be used as an actuating mechanism with an object to be secured to the support structure being typically located between the nut and the support structure as the threaded first end of the expandable anchor extends through this object.
By rotating the nut, it engages the outer surface of the object and thus bears upon it such as to pull the expander member in an outward direction. As the expansion sleeve is already sufficiently fractionally engaged with the inside surface of the hole, when the expandable anchor is pulled by the rotation of the nut, the expansion sleeve stays substantially stationary in the hole and thus, as the expander member is pulled out of the hole, the flared second end of the expander member causes the radial expansion sleeve to expand outwardly thereby increasing a friction between the expansion sleeve and the hole and thus securing the expandable anchor therein.
Since the expansion sleeve must already be fractionally engaged with the hole before the expandable anchor is pulled, the outside diameter of the expansion sleeve must be similar to the inside diameter of the hole and even slightly greater therefrom in order to ensure an initial frictional contact therebetween which will then allow the expansion sleeve to remain still in the hole while the expander member is pulled outwardly thereof and thus allow the expansion sleeve to be expanded by the flared end of the expander member. This diameter of the expander member, at rest, results in that the expandable anchor when initially inserted in the hole must be inconveniently driven with significant force therein as the expansion sleeve is already fractionally engaged with the inside wall of the hole. The flared end acts as a wedge to expand the expansion sleeve into greater frictional contact with the inside of the hole.
Also known are undercut wedge anchors, wherein the hole formed in the support structure is enlarged at a distance from the visible opening of the hole such that the expansion sleeve may be inserted behind a shoulder defined at the junction of the enlarged area and the remainder of the hole.
Once expanded, the expansion sleeve may abut this shoulder and thus retain the anchor in position in the support structure.
SUMMARY OF THE INVENTION
It is therefore an aim of the present invention to provide an improved expandable anchor for use in holes in various materials, e.g. concrete.
It is also an aim of the present invention to provide an expandable bolt, such as a sleeve bolt, having an expander member and an expansion member capable of spring-like deformation.
BRIEF DESCRIPTION OF THE DRAWINGS
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration a preferred embodiment thereof, and in which:
Figs. 1 to 3 are front elevational views of a sleeve bolt in accordance with the present invention shown respectively in first, second and third positions thereof;
Figs. 4 to 6 are bottom plan views of the expansion sleeve of the sleeve bolt of Figs. 1 to 3;
Fig. 7 is a top plan view of the sleeve bolt of Figs. 1 to 3;
Figs. 8 and 9 are respectively front elevational and top plan views of the fastener of the sleeve bolt of Figs. 1 to 3;
Figs. 10 and 11 are respectively front elevational and bottom plan views of the threaded member of the expansion sleeve of the sleeve bolt of Figs. 1 to 3;
Fig. 12 is a plan view of the expansion member of the expansion sleeve of the sleeve bolt of Figs. 1 to 3, this expansion member being shown in its initial manufactured state, i.e. before being shaped for use in the sleeve bolt;
Figs. 13 to 15 are respectively front elevational and top and bottom plan views of the expansion member of Fig. 12, but shown in its position for mounting to the threaded member of Figs.
10 and 11;
Figs. 16 to 18 are respectively front elevational, vertical cross-sectional and top plan views of a second embodiment of the sleeve bolt of Figs. 1 to 3, also in accordance with the present invention;
Figs. 19 to 21 are front elevational, vertical cross-sectional and top plan views of the home expansion sleeve of the sleeve bolt of Figs. 16 to 18;
Figs. 22 and 23 are front elevational views of a third embodiment of a sleeve bolt in accordance with the present invention shown respectively in first and second positions thereof;
Fig. 24 is a top plan view of the sleeve bolt of Fig. 23;
Figs. 25 and 26 are front elevational and cross-sectional views of a threaded member of the sleeve bolt;
Figs. 27 to 30 are respectively front elevational, side elevational, top plan and bottom plan views of an expansion member of the sleeve bolt;
Fig. 31 is a front elevational of the expansion member in an unfolded, manufacture, position thereof; and Figs. 32 to 41 are views similar to Figs.
22 to 31, respectively, a fourth embodiment of a sleeve bolt in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In accordance with the present invention, Figs. 1 to 3 illustrate a sleeve bolt A comprising a threaded fastener 10 and an expansion sleeve 12. The fastener 10 includes a stem 14 having a proximal smooth cylindrical section 16, a reduced diameter threaded distal section 18 and an intermediate frusto-conical section 20. The fastener 10 also includes a bolt head 22 and a washer 24, both to be located outside of the hole defined in a structure, in which hole the stem 14 is to be inserted such that an object may be held secure by the bolt head 22 against the structure.
The expansion sleeve 12 includes a cylindrical internally threaded member 26 (Figs. 10 and 11) and an expansion member 28 (Figs. 12 to 15) .
The expansion member includes a central ring 30 and, for instance, three anchor legs 32 extending therefrom. When the threaded member 26 and the expansion member 28 are assembled together as in Figs. 1 to 6, narrow sections 34 of the legs 32 are lodged in notches 36 defined on the periphery of the threaded member 26.
The threaded section 18 of the fastener 10 is adapted to threadably mate with the threaded member 26 of the expansion sleeve 12 with the threaded section 18 extending through the central ring 30 and with the legs 32 extending exteriorly along the threaded section 18 , as seen in a f first or inoperative position of the sleeve bolt A shown in Fig. 1.
When the sleeve bolt A of Fig. 1 is positioned in the aforementioned hole defined in the support structure, the expansion sleeve 12 fractionally contacts the walls of the hole in a sufficient manner such that the subsequent rotation of the fastener 10 by way of its bolt head 22 will cause the fastener 10 to move further into the hole of the structure, as the expansion sleeve 12 remains stationary in the hole (in view of its frictional contact with the walls thereof) and in view of the threaded engagement of the distal section 18 of the fastener 10 with the threaded member 26 of the expansion sleeve 12. Indeed, the rotation of the fastener causes the same to displace through the expansion sleeve 12, whereby, as seen in Figs. 2 and 3, the expansion sleeve 12 is displaced relative to the fastener 10 such that the legs 32 thereof climb along the frusto-conical section 20 of the stem 14 of the fastener 10 and are forced outwardly by the frusto-conical section 20 until the proximal edges 38 of the legs 32 come into strong angled engagement with the walls of the hole. The angle of the legs 32 in Fig. 3 and their engagement with the walls of the hole prevent the bolt sleeve A from being forcibly removed form the hole.
In Figs. 16 to 21, a variant sleeve bolt A' includes the same fastener 10 which is now used with an expansion sleeve 12' having four legs 32'. The expansion sleeve 12' is also of unitary construction in that the threaded member and expansion members 26 and 28 of the sleeve bolt A of Figs. 1 to 15 are manufactured integrally with each other.
In Figs. 22 to 31, there is shown a further sleeve bolt B having a threaded fastener 40, an expansion member 42 and a threaded member 44 and, in this embodiment, the expansion member 42 and the threaded member 44 are not mounted together as for above sleeve bolts A and A' . The expansion member 42 has the form of a cylinder which can expand, whereas the threaded member 44 is internally threaded such as to be threadably engaged to the distal threaded end of the threaded fastener 40 and has a shape which defines a flare 48, increasing in size from the expansion member 42 outward. The threaded fastener 40 defines a flare at 46 on an inward side of the expansion member 42 such the expansion member 42 is located between the flare 46 of the threaded fastener 40 and the flare 48 of the threaded member 44.
Once the sleeve bolt B' has been introduced in a hole defined in a structure, both the expansion member 42 and the threaded member 44 are sufficiently fractionally engaged to the walls of the hole such that rotation of the threaded fastener 40 by way of its bolt head causes it to move further into the hole of the structure . As the expansion sleeve 42 and the threaded member 44 remains stationary in the hole (in view of their frictional contact with the walls thereof), the flare 46 gradually gets closer to the expansion member 42 and, once it abuts it, it forces the expansion member 42 downwardly towards the threaded member 44 such that the expansion member 42 becomes imprisoned between the flare 46 of the threaded fastener 40 and the flare 48 of the threaded member 44. Continued rotation of the treaded fastener 40 will cause both ends of the expansion member 42 to climb along the aforementioned flared sections of the threaded fastener 40 and the threaded member 44 such that both these ends expand outwardly into strong engagement with the walls of the hole.
Figs. 32 to 41 illustrate a variant sleeve bolt B' of the sleeve bolt B of Figs. 22 to 31 in which the expansion sleeve 42' is of different configuration.
By rotating the nut, it engages the outer surface of the object and thus bears upon it such as to pull the expander member in an outward direction. As the expansion sleeve is already sufficiently fractionally engaged with the inside surface of the hole, when the expandable anchor is pulled by the rotation of the nut, the expansion sleeve stays substantially stationary in the hole and thus, as the expander member is pulled out of the hole, the flared second end of the expander member causes the radial expansion sleeve to expand outwardly thereby increasing a friction between the expansion sleeve and the hole and thus securing the expandable anchor therein.
Since the expansion sleeve must already be fractionally engaged with the hole before the expandable anchor is pulled, the outside diameter of the expansion sleeve must be similar to the inside diameter of the hole and even slightly greater therefrom in order to ensure an initial frictional contact therebetween which will then allow the expansion sleeve to remain still in the hole while the expander member is pulled outwardly thereof and thus allow the expansion sleeve to be expanded by the flared end of the expander member. This diameter of the expander member, at rest, results in that the expandable anchor when initially inserted in the hole must be inconveniently driven with significant force therein as the expansion sleeve is already fractionally engaged with the inside wall of the hole. The flared end acts as a wedge to expand the expansion sleeve into greater frictional contact with the inside of the hole.
Also known are undercut wedge anchors, wherein the hole formed in the support structure is enlarged at a distance from the visible opening of the hole such that the expansion sleeve may be inserted behind a shoulder defined at the junction of the enlarged area and the remainder of the hole.
Once expanded, the expansion sleeve may abut this shoulder and thus retain the anchor in position in the support structure.
SUMMARY OF THE INVENTION
It is therefore an aim of the present invention to provide an improved expandable anchor for use in holes in various materials, e.g. concrete.
It is also an aim of the present invention to provide an expandable bolt, such as a sleeve bolt, having an expander member and an expansion member capable of spring-like deformation.
BRIEF DESCRIPTION OF THE DRAWINGS
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration a preferred embodiment thereof, and in which:
Figs. 1 to 3 are front elevational views of a sleeve bolt in accordance with the present invention shown respectively in first, second and third positions thereof;
Figs. 4 to 6 are bottom plan views of the expansion sleeve of the sleeve bolt of Figs. 1 to 3;
Fig. 7 is a top plan view of the sleeve bolt of Figs. 1 to 3;
Figs. 8 and 9 are respectively front elevational and top plan views of the fastener of the sleeve bolt of Figs. 1 to 3;
Figs. 10 and 11 are respectively front elevational and bottom plan views of the threaded member of the expansion sleeve of the sleeve bolt of Figs. 1 to 3;
Fig. 12 is a plan view of the expansion member of the expansion sleeve of the sleeve bolt of Figs. 1 to 3, this expansion member being shown in its initial manufactured state, i.e. before being shaped for use in the sleeve bolt;
Figs. 13 to 15 are respectively front elevational and top and bottom plan views of the expansion member of Fig. 12, but shown in its position for mounting to the threaded member of Figs.
10 and 11;
Figs. 16 to 18 are respectively front elevational, vertical cross-sectional and top plan views of a second embodiment of the sleeve bolt of Figs. 1 to 3, also in accordance with the present invention;
Figs. 19 to 21 are front elevational, vertical cross-sectional and top plan views of the home expansion sleeve of the sleeve bolt of Figs. 16 to 18;
Figs. 22 and 23 are front elevational views of a third embodiment of a sleeve bolt in accordance with the present invention shown respectively in first and second positions thereof;
Fig. 24 is a top plan view of the sleeve bolt of Fig. 23;
Figs. 25 and 26 are front elevational and cross-sectional views of a threaded member of the sleeve bolt;
Figs. 27 to 30 are respectively front elevational, side elevational, top plan and bottom plan views of an expansion member of the sleeve bolt;
Fig. 31 is a front elevational of the expansion member in an unfolded, manufacture, position thereof; and Figs. 32 to 41 are views similar to Figs.
22 to 31, respectively, a fourth embodiment of a sleeve bolt in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In accordance with the present invention, Figs. 1 to 3 illustrate a sleeve bolt A comprising a threaded fastener 10 and an expansion sleeve 12. The fastener 10 includes a stem 14 having a proximal smooth cylindrical section 16, a reduced diameter threaded distal section 18 and an intermediate frusto-conical section 20. The fastener 10 also includes a bolt head 22 and a washer 24, both to be located outside of the hole defined in a structure, in which hole the stem 14 is to be inserted such that an object may be held secure by the bolt head 22 against the structure.
The expansion sleeve 12 includes a cylindrical internally threaded member 26 (Figs. 10 and 11) and an expansion member 28 (Figs. 12 to 15) .
The expansion member includes a central ring 30 and, for instance, three anchor legs 32 extending therefrom. When the threaded member 26 and the expansion member 28 are assembled together as in Figs. 1 to 6, narrow sections 34 of the legs 32 are lodged in notches 36 defined on the periphery of the threaded member 26.
The threaded section 18 of the fastener 10 is adapted to threadably mate with the threaded member 26 of the expansion sleeve 12 with the threaded section 18 extending through the central ring 30 and with the legs 32 extending exteriorly along the threaded section 18 , as seen in a f first or inoperative position of the sleeve bolt A shown in Fig. 1.
When the sleeve bolt A of Fig. 1 is positioned in the aforementioned hole defined in the support structure, the expansion sleeve 12 fractionally contacts the walls of the hole in a sufficient manner such that the subsequent rotation of the fastener 10 by way of its bolt head 22 will cause the fastener 10 to move further into the hole of the structure, as the expansion sleeve 12 remains stationary in the hole (in view of its frictional contact with the walls thereof) and in view of the threaded engagement of the distal section 18 of the fastener 10 with the threaded member 26 of the expansion sleeve 12. Indeed, the rotation of the fastener causes the same to displace through the expansion sleeve 12, whereby, as seen in Figs. 2 and 3, the expansion sleeve 12 is displaced relative to the fastener 10 such that the legs 32 thereof climb along the frusto-conical section 20 of the stem 14 of the fastener 10 and are forced outwardly by the frusto-conical section 20 until the proximal edges 38 of the legs 32 come into strong angled engagement with the walls of the hole. The angle of the legs 32 in Fig. 3 and their engagement with the walls of the hole prevent the bolt sleeve A from being forcibly removed form the hole.
In Figs. 16 to 21, a variant sleeve bolt A' includes the same fastener 10 which is now used with an expansion sleeve 12' having four legs 32'. The expansion sleeve 12' is also of unitary construction in that the threaded member and expansion members 26 and 28 of the sleeve bolt A of Figs. 1 to 15 are manufactured integrally with each other.
In Figs. 22 to 31, there is shown a further sleeve bolt B having a threaded fastener 40, an expansion member 42 and a threaded member 44 and, in this embodiment, the expansion member 42 and the threaded member 44 are not mounted together as for above sleeve bolts A and A' . The expansion member 42 has the form of a cylinder which can expand, whereas the threaded member 44 is internally threaded such as to be threadably engaged to the distal threaded end of the threaded fastener 40 and has a shape which defines a flare 48, increasing in size from the expansion member 42 outward. The threaded fastener 40 defines a flare at 46 on an inward side of the expansion member 42 such the expansion member 42 is located between the flare 46 of the threaded fastener 40 and the flare 48 of the threaded member 44.
Once the sleeve bolt B' has been introduced in a hole defined in a structure, both the expansion member 42 and the threaded member 44 are sufficiently fractionally engaged to the walls of the hole such that rotation of the threaded fastener 40 by way of its bolt head causes it to move further into the hole of the structure . As the expansion sleeve 42 and the threaded member 44 remains stationary in the hole (in view of their frictional contact with the walls thereof), the flare 46 gradually gets closer to the expansion member 42 and, once it abuts it, it forces the expansion member 42 downwardly towards the threaded member 44 such that the expansion member 42 becomes imprisoned between the flare 46 of the threaded fastener 40 and the flare 48 of the threaded member 44. Continued rotation of the treaded fastener 40 will cause both ends of the expansion member 42 to climb along the aforementioned flared sections of the threaded fastener 40 and the threaded member 44 such that both these ends expand outwardly into strong engagement with the walls of the hole.
Figs. 32 to 41 illustrate a variant sleeve bolt B' of the sleeve bolt B of Figs. 22 to 31 in which the expansion sleeve 42' is of different configuration.
Claims (29)
1. A sleeve bolt for insertion in a hole delimited by a wall, comprising a threaded fastener and an expansion means, said threaded fastener having a stem, said stem including a proximal stem section and a distal threaded section, said proximal stem section having substantially a diameter of the hole and being provided at a distal end thereof with an expander means, said expansion means being adapted to be threadably engaged onto said distal threaded section and having a proximal end adapted, upon axial displacement of said expansion means towards said proximal stem section resulting from a rotation of said stem, to engage said expander means such to expand outwardly into engagement with the wall.
2. A sleeve bolt as defined in claim 1, wherein said expansion means comprise a distal threaded member and a proximal expansion wedge, said threaded member being adapted to be threadably engaged to said threaded section of said stem, said expansion wedge being adapted to fractionally engage the wall upon introduction of said stem in the hole while said threaded member is spaced from the wall such that, upon sufficient subsequent rotation of said stem, said expansion means displace towards said expander means.
3. A sleeve bolt as defined in claim 2, wherein a transversal size of said expander means reduces in direction of said distal threaded section of said stem such that, upon displacement of said expansion wedge along said distal threaded section and towards said expander means, a proximal end of said expansion wedge engages said expander means and gradually expands outwardly.
4. A sleeve bolt as defined in claim 3, wherein said expander means defines a taper.
5. A sleeve bolt as defined in claim 4, wherein said expander means comprises a frusto-conical portion.
6. A sleeve bolt as defined in claims 2 to 5, wherein said threaded member of said expansion means comprises a conical section which tapers towards said expansion wedge, said conical section being adapted, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, to displace towards and relative to both said expander means and said expansion wedge such that said conical section causes a distal end of said expansion wedge to expand outwardly into engagement with the wall.
7. A sleeve bolt as defined in claims 2 to 6, wherein said expansion wedge defines at least one opening means, said distal threaded member of said expansion means being engaged in said opening means such that said expansion wedge and said distal threaded member rotate jointly with respect to said stem.
8. A sleeve bolt as defined in claim 7, wherein said distal threaded member comprises a tab means extending into said opening means, said tab means being capable of displacing along said opening means, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, and of causing said expansion wedge to expand outwardly.
9. A sleeve bolt as defined in claim 8, wherein said expansion wedge defines a longitudinal slit extending along a whole length thereof and through said opening means, said opening means comprising a proximal end portion tapering in direction of expander means, whereby said tab means, upon engaging said proximal end portion of said opening means, cause said expansion wedge to gradually outwardly expand into the wall.
10. A sleeve bolt as defined in claim 9, wherein said tab means is adapted, once having displaced past said proximal end portion of said opening means, to lodge in a proximal portion of said slit and maintain said expansion wedge engaged to the wall.
11. A sleeve bolt as defined in claims 8 to 10, wherein two diametrically opposed opening means are defined in said expansion wedge, a pair of tabs extending outwardly from a proximal end of said threaded member being engaged in said opening means, said slit extending through one of said opening means.
12. A sleeve bolt as defined in claim 7, wherein said distal threaded member comprises a tab means extending into said opening means, said tab means being capable of displacing along said opening means, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, said opening means being closed at a proximal end thereof.
13. A sleeve bolt for insertion in a hole delimited by a wall, comprising a threaded fastener and an expansion means, said threaded fastener having a stem, said stem including a proximal stem section and a distal threaded section, said proximal stem section being provided at a distal end thereof with an expander means, said expansion means being adapted to be threadably engaged onto said distal threaded section and having a proximal end adapted, upon axial displacement of said expansion means towards said proximal stem section resulting from a rotation of said stem, to engage said expander means such to expand outwardly into engagement with the wall.
14. A sleeve bolt as defined in claim 13, wherein said expansion means comprise a distal threaded member and a proximal expansion wedge, said threaded member being adapted to be threadably engaged to said threaded section of said stem, said expansion wedge being adapted to fractionally engage the wall upon introduction of said stem in the hole while said threaded member is spaced from the wall such that, upon sufficient subsequent rotation of said stem, said expansion means displace towards said expander means.
15. A sleeve bolt as defined in claim 14, wherein a transversal size of said expander means reduces in direction of said distal threaded section of said stem such that, upon displacement of said expansion wedge along said distal threaded section and towards said expander means, a proximal end of said expansion wedge engages said expander means and gradually expands outwardly.
16. A sleeve bolt as defined in claims 14 and 15, wherein said threaded member of said expansion means comprises a conical section which tapers towards said expansion wedge, said conical section being adapted, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, to displace towards and relative to both said expander means and said expansion wedge such that said conical section causes a distal end of said expansion wedge to expand outwardly into engagement with the wall.
17. A method of setting a sleeve bolt in a hole delimited by a wall, comprising the steps of: (a) providing a threaded fastener and an expansion means threadably engaged to a distal end of said fastener;
(b) inserting said expansion means and part of said threaded fastener in the hole; (c) rotating sufficiently said fastener with said expansion means being fractionally engaged to the wall for causing said expansion means to displace towards a proximal end of said fastener and for causing a proximal end of said expansion means to be expanded by said fastener into engagement with the wall.
(b) inserting said expansion means and part of said threaded fastener in the hole; (c) rotating sufficiently said fastener with said expansion means being fractionally engaged to the wall for causing said expansion means to displace towards a proximal end of said fastener and for causing a proximal end of said expansion means to be expanded by said fastener into engagement with the wall.
18. A method as defined in claim 17, wherein said fastener has a stem, said stem including a proximal stem section and a distal threaded section, said proximal stem section having substantially a diameter of the hole and being provided at a distal end thereof with an expander means for expanding said expansion means in step c), said expansion means being adapted to be threadably engaged onto said distal threaded section and having a proximal end adapted, upon axial displacement of said expansion means towards said proximal stem section resulting from a rotation of said stem, to engage said expander means such to expand outwardly into engagement with the wall.
19. A method as defined in claim 18, wherein said expansion means comprise a distal threaded member and a proximal expansion wedge, said threaded member being adapted to be threadably engaged to said threaded section of said stem, said expansion wedge being adapted to fractionally engage the wall upon introduction of said stem in the hole while said threaded member is spaced from the wall such that, upon sufficient subsequent rotation of said stem, said expansion means displace towards said expander means.
20. A method as defined in claim 19, wherein a transversal size of said expander means reduces in direction of said distal threaded section of said stem such that, upon displacement of said expansion wedge along said distal threaded section and towards said expander means, a proximal end of said expansion wedge engages said expander means and gradually expands outwardly.
21. A method as defined in claim 20, wherein said expander means defines a taper.
22. A method as defined in claim 21, wherein said expander means comprises a frusto-conical portion.
23. A method as defined in claims 19 to 22, wherein said threaded member of said expansion means comprises a conical section which tapers towards said expansion wedge, said conical section being adapted, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, to displace towards and relative to both said expander means and said expansion wedge such that said conical section causes a distal end of said expansion wedge to expand outwardly into engagement with the wall.
24. A method as defined in claims 19 to 23, wherein said expansion wedge defines at least one opening means, said distal threaded member of said expansion means being engaged in said opening means such that said expansion wedge and said distal threaded member rotate jointly with respect to said stem.
25. A method as defined in claim 24, wherein said distal threaded member comprises a tab means extending into said opening means, said tab means being capable of displacing along said opening means, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, and of causing said expansion wedge to expand outwardly.
26. A method as defined in claim 25, wherein said expansion wedge defines a longitudinal slit extending along a whole length thereof and through said opening means, said opening means comprising a proximal end portion tapering in direction of expander means, whereby said tab means, upon engaging said proximal end portion of said opening means, cause said expansion wedge to gradually outwardly expand into the wall.
27. A method as defined in claim 26, wherein said tab means is adapted, once having displaced past said proximal end portion of said opening means, to lodge in a proximal portion of said slit and maintain said expansion wedge engaged to the wall.
28. A method as defined in claims 25 to 27, wherein two diametrically opposed opening means are defined in said expansion wedge, a pair of tabs extending outwardly from a proximal end of said threaded member being engaged in said opening means, said slit extending through one of said opening means.
29. A method as defined in claim 24, wherein said distal threaded member comprises a tab means extending into said opening means, said tab means being capable of displacing along said opening means, upon sufficient rotation of said stem and once said expansion wedge is substantially stationary onto said expander means, said opening means being closed at a proximal end thereof.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2301352 CA2301352A1 (en) | 1999-04-30 | 2000-03-20 | Sleeve bolt |
| PCT/CA2000/000441 WO2000070232A1 (en) | 1999-04-30 | 2000-05-01 | Sleeve bolt |
| EP00922358A EP1177386A1 (en) | 1999-04-30 | 2000-05-01 | Sleeve bolt |
| CA002372733A CA2372733A1 (en) | 1999-04-30 | 2000-05-01 | Sleeve bolt |
| AU42787/00A AU4278700A (en) | 1999-04-30 | 2000-05-01 | Sleeve bolt |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,270,570 | 1999-04-30 | ||
| CA 2270570 CA2270570A1 (en) | 1999-04-30 | 1999-04-30 | Sleeve anchor |
| CA 2301352 CA2301352A1 (en) | 1999-04-30 | 2000-03-20 | Sleeve bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2301352A1 true CA2301352A1 (en) | 2000-10-30 |
Family
ID=25680918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2301352 Abandoned CA2301352A1 (en) | 1999-04-30 | 2000-03-20 | Sleeve bolt |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1177386A1 (en) |
| AU (1) | AU4278700A (en) |
| CA (1) | CA2301352A1 (en) |
| WO (1) | WO2000070232A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6935811B2 (en) | 2002-11-13 | 2005-08-30 | Terrasimco Inc. | Frictional mining bolt |
| DE102010016797A1 (en) * | 2010-05-05 | 2011-11-10 | Fischerwerke Gmbh & Co. Kg | expansion anchor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB725291A (en) * | 1953-01-21 | 1955-03-02 | Gustaf Lambert Ericsson | Improvements in devices for securing articles to structures |
| DE1450987A1 (en) * | 1964-10-26 | 1969-04-17 | Artur Fischer | Duebel with spreading body |
| US4408937A (en) * | 1979-12-31 | 1983-10-11 | Volker Hainke | Anchor bolt |
| GB8403634D0 (en) * | 1984-02-11 | 1984-03-14 | Lade V C | Bolt anchor |
-
2000
- 2000-03-20 CA CA 2301352 patent/CA2301352A1/en not_active Abandoned
- 2000-05-01 AU AU42787/00A patent/AU4278700A/en not_active Abandoned
- 2000-05-01 EP EP00922358A patent/EP1177386A1/en not_active Withdrawn
- 2000-05-01 WO PCT/CA2000/000441 patent/WO2000070232A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU4278700A (en) | 2000-12-05 |
| WO2000070232A1 (en) | 2000-11-23 |
| EP1177386A1 (en) | 2002-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |