GB2289738A - Chemically-set anchor stud system - Google Patents
Chemically-set anchor stud system Download PDFInfo
- Publication number
- GB2289738A GB2289738A GB9510602A GB9510602A GB2289738A GB 2289738 A GB2289738 A GB 2289738A GB 9510602 A GB9510602 A GB 9510602A GB 9510602 A GB9510602 A GB 9510602A GB 2289738 A GB2289738 A GB 2289738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stud
- capsule
- hole
- tool
- hardener
- 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.)
- Withdrawn
Links
- 239000002775 capsule Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 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
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
- F16B13/141—Fixing plugs in holes by the use of settable material
- F16B13/143—Fixing plugs in holes by the use of settable material using frangible cartridges or capsules containing the setting components
- F16B13/144—Fixing plugs in holes by the use of settable material using frangible cartridges or capsules containing the setting components characterised by the shape or configuration or material of the frangible cartridges or capsules
-
- 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
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
- F16B13/141—Fixing plugs in holes by the use of settable material
- F16B13/143—Fixing plugs in holes by the use of settable material using frangible cartridges or capsules containing the setting components
- F16B13/145—Fixing plugs in holes by the use of settable material using frangible cartridges or capsules containing the setting components characterised by the composition of the setting agents contained in the frangible cartridges or capsules
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A chemically-set anchor stud system comprises a punch (8) with a blind bore (16) to receive the threaded outer end of the stud (2), and a capsule of resin and hardener. When the capsule and stud are inserted into a hole drilled into masonry, hammer blows applied to the punch to force the stud further into the hole will cause the stud to break the capsule and cause mixing of the hardener with the resin, and extrusion of the mixture outwardly along the shank of the stud, without damaging the threaded outer end of the stud (2). Setting to the correct depth is achieved when the leading end 8a of the punch meets the face of the masonry. <IMAGE>
Description
CHEMICALLY-SErANCHOR STUD SYSTEM
The present invention relates to an anchor stud system of the type comprising a threaded anchor stud which is set within a hole drilled into masonry by means of a hardenable adhesive. An anchor stud system of this type is commonly known as a chemical anchoring system.
A typical chemicallyiet system of the type specified above comprises an anchor stud and a capsule consisting of a two-part adhesive, for example vinylester resin and hardener. The capsule is inserted into the bottom of the hole and then the stud is inserted into the hole. The end of the stud is chiselled in order to break the capsule when a hammer force is applied to the outer end of the stud. The design of the capsule is such that it requires both hammering and rotation of the stud to break the capsule, mix the components and cause the mixture to extrude rearwardly along the shank of the stud to thereby form a bond between the stud shank and the wall of the hole.This required action can be applied by means of a hammer drill and for this purpose the outer end of the stud is formed with a hexagonal socket to receive an allen key mounted within the chuck of a standard hammer drill. While this previously proposed system operates satisfactorily it does require the use of a hammer drill to set the anchor stud. Although a hammer drill will usually be available on a building site, when, as is often the case in practice, a large number of anchor studs are required to be installed, the hammer drill will be in use for long periods of time drilling the holes and therefore may not be always available for use by a person setting the studs into the holes.
According to the present invention, there is provided an anchor system comprising an anchor stud adapted to be inserted into a hole drilled into masonry, a capsule of hardenable adhesive formed by components which mix together when the capsule is broken, the capsule being insertable into the base of the hole and the inner end of the stud being of a configuration to cause breaking of the capsule and mixing with the components when hammer blows are applied to the stud, and a punch tool for setting the stud within the hole, said tool having an internal blind bore leading from the inner end of the tool to receive within the bore the outer end portion of the stud whereby hammer blows can be applied to the outer end of the tool to drive the stud into the hole to break the capsule, cause inter-mixing of the components, and extrusion of the mixture outwardly along the shank of the stud.
Preferably, the depth of the blind bore is such that when the inner end of the tool is level with the surface of the masonry, the stud will be set to a prescribed depth within the hole.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
Figure 1 is a side view of a threaded stud used in the anchor system of the preferred embodiment of the invention;
Figure 2 is a side view, in section, of a two-part adhesive capsule used in the system; and
Figure 3 is a side view, partially in section, of a setting tool.
The system in accordance with the preferred embodiment of the invention comprises an anchor stud 2 (Figure 1) having a chisel point 4 at its inner end, a capsule 6 (Figure 2) of two-part adhesive, and a setting tool 8 (Figure 3). The capsule 6 consists of a resin 10 in the form of a viscous liquid and a hardener 12 separated by an intermediate barrier 14. The setting tool 8 consists of a cylindrical punch with an internal bore 16 of a diameter to receive the outer end of the stud 2.
The depth of the bore 16 is such that when the forward end 8a of the punch abuts against the surface of the masonry and hence is level with the surface of the masonry, the stud 2 will be set into the hole to the required depth.
In use, a hole to the required depth is drilled into the masonry and then the capsule 6 is inserted so that the end of the capsule 6 carrying the resin 10 is towards the bottom of the hole. The stud 2 is inserted into the hole and the tool 8 is placed over the outer end of the stud 2 and is struck repeatedly with a hammer so that the stud 2 is driven further into the hole, breaks the capsule 6 and forces the hardener
12 through the resin 10 so as to cause mixing of the components, and as the stud 2
is driven deeper into the hole the viscous mixture is extruded back along the shank
of the stud to form a bond between the shank and the wall of the hole, no rotation
of the stud 2 being required to achieve mixing and setting of the stud Correct
setting is achieved when the inner end 8a of the tool 8 meets the face of the
masonry. The use of the tool prevents damage occurring to the threaded outer end of the stud 2 during insertion and also effects insertion into the required depth and more accurate centring of the stud 2 within the hole.
The embodiment has been described by way of example only and modifications may be made within the scope of the invention
Claims (5)
- CLAIMS: 1. An anchor system comprising an anchor stud adapted to be inserted into a hole drilled into masonry, a capsule of hardenable adhesive formed by components which mix together when the capsule is broken, the capsule being insertable into the base of the hole and the inner end of the stud being of a configuration to cause breaking of the capsule and mixing with the components when hammer blows are applied to the stud, and a punch tool for setting the stud within the hole, said tool having an internal blind bore leading from the inner end of the tool to receive within the bore the outer end portion of the stud whereby hammer blows can be applied to the outer end of the tool to drive the stud into the hole to break the capsule, cause inter-mixing of the components, and extrusion of the mixture outwardly along the shank of the stud.
- 2. An anchor system according to claim 1, wherein the capsule comprises a viscous resin and a hardener, the hardener being at an outer end of the capsule such that when the stud is driven into the hole to break the capsule the movement of the stud forces the hardener through the resin to cause mixing of the hardener and resign.
- 3. An anchor system according to claim 1 or claim 2, wherein the depth of the blind core is such that when the inner end of the tool is level with the surface of the masonry, the stud is set to a prescribed setting depth within the hole.
- 4. An anchor system substantially as hereinbefore described with reference to the accompanying drawings.
- 5. A method of setting an anchor using an anchor system according to any one of claims 1 to 4, comprising drilling a hole into masonry, inserting the capsule into the base of the hole, inserting the stud into the hole, applying the punch tool over the exposed outer end of the stud and applying hammer blows to the tool to drive the stud further into the hole to break the capsule, cause intermixing of the components and extrusion of the mixture outwardly along the shank of the stud.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPM5877A AUPM587794A0 (en) | 1994-05-25 | 1994-05-25 | Chemically-set anchor stud system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9510602D0 GB9510602D0 (en) | 1995-07-19 |
| GB2289738A true GB2289738A (en) | 1995-11-29 |
Family
ID=3780451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9510602A Withdrawn GB2289738A (en) | 1994-05-25 | 1995-05-25 | Chemically-set anchor stud system |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AUPM587794A0 (en) |
| GB (1) | GB2289738A (en) |
| NZ (1) | NZ272160A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034850A (en) * | 1978-11-10 | 1980-06-11 | Fischer Artur | Anchoring of bolts in masonry holes |
| US4224971A (en) * | 1970-12-04 | 1980-09-30 | Mueller Dieter | Dowel or anchoring means |
| GB2172682A (en) * | 1985-03-21 | 1986-09-24 | Boart Uk Ltd | Rock bolting |
-
1994
- 1994-05-25 AU AUPM5877A patent/AUPM587794A0/en not_active Abandoned
-
1995
- 1995-05-19 NZ NZ272160A patent/NZ272160A/en unknown
- 1995-05-25 GB GB9510602A patent/GB2289738A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224971A (en) * | 1970-12-04 | 1980-09-30 | Mueller Dieter | Dowel or anchoring means |
| GB2034850A (en) * | 1978-11-10 | 1980-06-11 | Fischer Artur | Anchoring of bolts in masonry holes |
| GB2172682A (en) * | 1985-03-21 | 1986-09-24 | Boart Uk Ltd | Rock bolting |
Also Published As
| Publication number | Publication date |
|---|---|
| AUPM587794A0 (en) | 1994-06-16 |
| GB9510602D0 (en) | 1995-07-19 |
| NZ272160A (en) | 1997-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |