WO1994003734A1 - Fixing method and apparatus - Google Patents

Fixing method and apparatus Download PDF

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Publication number
WO1994003734A1
WO1994003734A1 PCT/GB1993/001657 GB9301657W WO9403734A1 WO 1994003734 A1 WO1994003734 A1 WO 1994003734A1 GB 9301657 W GB9301657 W GB 9301657W WO 9403734 A1 WO9403734 A1 WO 9403734A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
fixing
head
fitting
wall
Prior art date
Application number
PCT/GB1993/001657
Other languages
French (fr)
Inventor
Stuart Harold Turner
Paul Steabben Hepworth
Original Assignee
Turner Intellectual Property Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Turner Intellectual Property Limited filed Critical Turner Intellectual Property Limited
Publication of WO1994003734A1 publication Critical patent/WO1994003734A1/en

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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
    • F16B13/002—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose self-cutting

Definitions

  • This invention relates to a method of and apparatus for fixing a fitting at a surface of a wall or other member, this primarily being plasterboard or cellular block material.
  • a wall or other member this primarily being plasterboard or cellular block material.
  • the term 'wall' includes all equivalent members.
  • An object of the invention is to provided such a method and apparatus for use in such a method in an effective and convenient form.
  • a method of fixing a fitting at or adjacent a wall comprising providing a member having one end intended to be engaged with a drill for rotatively driving the member, in use, the member having a head at its opposite end, drilling a hole in a surface of said wall by means of the head of said member, providing a fixing plug, driving said plug into said hole by means of the head of said member, disposing the fitting at or adjacent said wall and passing a fixing means through the fitting and into engagement with said plug, thereby to secure said fitting at or adjacent the wall.
  • said fixing means in the form of a screw, is driven through said fitting and into engagement with said plug by means of the head of said member, as said member is rotatively driven by said drill.
  • apparatus for use in fixing a fitting at or adjacent a wall, the apparatus comprising a member having one end adapted for engagement with a drill for rotatively driving the member, in use, the member having a head at its opposite end, said head being configurated to drill a hole in a surface of said wall, for reception of a fixing plug, and to drive said plug into said hole, in use.
  • said head is sized and shaped so that it can drive a fixing means, preferably a screw, through the fitting and into engagement with said plug, in use.
  • a fixing means preferably a screw
  • kit of parts for carrying out said method, the kit of parts comprising said member and a multiplicity of said fixing plugs.
  • a number of said fixing means preferably screws, equal to the number of fixing plugs are supplied in the kit of parts.
  • Figure 1 is a side view of a fixing plug for use in the method of the invention
  • Figure 2 is a perspective view of the fixing plug
  • Figure 3 is a front end view of the fixing plug
  • Figure 4 and 5 are a rear end view and cross-sectional view on the line 5-5 of Figure 4 respectively of the fixing plug;
  • Figure 6 and 7 are views of the same form as in Figures 4 and 5 but with rear view and the section, on the line 7-7 , taken with the fixing plug rotated 45° from the respective positions in Figures 4 and 5;
  • Figure 8 is a side view of a head of a member of apparatus of the invention.
  • Figure 9 is a top view of said head
  • Figure 10 is an underneath view of said head
  • Figure 1 1 is a section of said head on the line 11-1 1 of Figure 10;
  • Figure 12 is an enlarged scale, exploded perspective view of the head and a shank of said member.
  • Figures 13 to 16 diagrammatical ly show respective steps of the method of the invention for fixing a fitting to a wall.
  • the present invention is largely concerned with fixing a fitting to a surface of a wall, particularly a wall of plasterboard or cellular block material, such material, as is well known, requiring the use of a fixing plug with which a screw can engage.
  • FIGS 1 to 7 show a fixing plug 10 used in the method of one aspect of the present invention, a number of these fixing plugs being sold, as will be described, in a kit of parts according to a further aspect of the present invention.
  • the fixing plug 10 is of plastics material, preferably nylon and comprises a circular end flange 1 1 forming a head of the plug, from which extends a shank 12 which is generally cylindrical except at its forward end 13 remote from the head, where it is frusto-conical.
  • the shank is hollow having a circular opening 14 therethrough, the opening extending through the flange 11.
  • Formed in the exterior surface of the shank and extending longitudinally parallel to the axis of the opening 14 are four slots 15 spaced equi-angularly around the shank. Each slot extends inwards to break into the opening 14 through the shank, so that in the interior of the shank 12 and flange 1 1 are formed four equi-angularly spaced, longitudinally extending ribs 16.
  • Around the exterior of the shank is a helical thread 17.
  • Figures 8 to 12 show the detail of a member 18 in the form of a drill, or drive, bit of one aspect of the invention, the member being for use in a further aspect of the invention relating to the fixing method.
  • the member 18 also forms part of the kit of parts of a further aspect of the invention.
  • the member 18 is made up of a steel circular shank 19 and a carbide tip or head 20 braised, welded or otherwise secured to the top of said shank. Alternatively the member can be in one piece.
  • the one-piece head 20 is effectively formed of two planar blades 21 , 22 respectively which mutually intercept centrally at 90°.
  • the two blades have generally flat top surfaces 23, 24 respectively at the sides of which respective pairs of sloping surfaces 25, 26 extend, respective pairs of straight parallel side surfaces 27, 28 extending from the ends of the surfaces 25, 26.
  • the blade 21 extends beyond the inner end of the blade 22. This extended part of the blade 21 is formed with grooves in its opposite faces between the side surfaces 27, thus creating a central inner part 29 of reduced thickness.
  • the width of this part 29 corresponds to the diameter of the shank 19 which is provided with a diametral slot 30 in its one end, the width of which substantially corresponds to the reduced thickness of the part 29, the depth of the slot substantially corresponding to the amount by which the blade 21 extends beyond the inner end of the blade 22, so that the part 29 can be received snugly in the slot 30 so that the head 20 can be secured to the shank 19 by suitable means described above.
  • the head can be symmetrical and secured centrally to a flat end of the shank.
  • the member 18 has its one end formed as a cylindrical shank and its other end formed as a drill or drive bit which, as can be seen from Figures 9 and 12 presents a generally cruciform leading part.
  • the surfaces 23 and 24 are generally flat, but these can in fact be slightly curved, as for example shown in Figures 8 and 1 1.
  • Figures 8 to 12 show the member 18 on a larger scale than the fixing plug 10 in Figures 1 to 7, but the shape and size of the member 18 is such that it can be inserted into the plug from the end thereof at which the flange 11 is formed, the forward part of the member 18 formed by the blades 21 and 22 engaging with the inner part of the forward end of the plug where the ribs 16 terminate.
  • the shape and size of the smaller cruciform part, shown in Figure 9, and formed by the surfaces 23, 24 substantially corresponds to the opening 14, whilst the larger cruciform part formed by the surfaces 25, 26 together with the surfaces 27, 28 correspond in shape and size to the slots 15, so that the end of the head can be accurately received into the plug through the opening 14 and slots 15 from the end of the plug at which the flange is formed, the ribs 16 locating between adjacent blades 21 , 22.
  • the respective outer peripheral surfaces 27 of the blades lie on a circle concentric with and having the same diameter as the circle describing the periphery of the shank, the sides of the blades blending smoothly into the shank suface.
  • the member 18 is adapted, by means of the size and shape of the head 20, to perform three operations in the method of securing a fitting to a wall surface by means of the fixing plug 10. The steps of such a method are shown in Figures 13 to 16.
  • FIGS 13, 15 and 16 show a wall 31 , with an outer surface 32, the wall being, for example, of plasterboard or cellular block material.
  • the member 18, rotatably driven as described is used to drill a hole 33 into the wall 31, this typically being of at least 38 mm deep.
  • the head and shank design of the member 18 allows the clearance of debris, particularly as the diameter of the shank is relatively small.
  • the member 18 is withdrawn therefrom and a fixing plug 10 is loaded onto the member 18, the head 20 being pushed fully into the plug so that, as described, the end of the head 20 snugly engages the inner end of the plug 10.
  • the plug on the end of the member 18 is then presented up to the hole 33 so that its forward end 13 is at the opening of the hole in the surface 32, and the drill is then operated to drive the member 18 which, as the drill is advanced, causes the plug to be driven into the hole 33. This continues until the flange 11 is flush with the surface of the wall 32, the plug then being disposed as shown in Figure 16.
  • the member 18 is then pulled out from the plug, which remains tightly engaged in the wall 31 , by virtue of its thread 17, as the member 18 is withdrawn.
  • a fitting 34 such as timber or the like, is presented up to the surface 32 at the location of the plug 10 and fixing means in the form of a cross-head fixing screw 35 (such as Philips, Posidriv or Supradriv) is passed through the fitting 34 and into engagement with the interior of the plug 10, until, as shown in Figure 16, the head of the screw 35 is flush with the outer surface of the fitting 34.
  • a cross-head fixing screw 35 such as Philips, Posidriv or Supradriv
  • the fitting would be preformed with a required countersunk bore for reception of the screw 35, although with fittings 34 of certain materials, it may be possible to drive the screw through the fitting and into engagement in the plug without the provision of a pre-formed bore in the fitting, the screw forming its own bore.
  • the shape and size of the end of the head matches the cruciform slot in the head of the screw so that the head 20 accurately engages with the head so that drive to the member 18 is effectively transmitted to the screw 35 so as to drive the screw through the fitting 34, whether provided with countersunk bore or not, and into engagement with the plug 10.
  • the part of the screw entering the plug 10 tightly engages therewithin to provide a secure fixing of the fitting 34 to the wall 32 as shown in Figure 16.
  • a No. 10 wood screw is suitable for fixing a fitting 34 in the form of timber, the screw needing to penetrate at least 25 mm into the plug for a secure fitting. It will however be appreciated that these dimensions are by way of example only.
  • the present invention is particularly advantageous in that a single drill or drive bit 18 can be used for all three parts of the fixing operation, the member 18 thus remaining engaged with the drill for as many fixing plugs as need to be secured. Additionally no other tools, such as a hammer or a screw driver, are required to insert the plugs and to tighten fixing screws. With many known fixing plugs it is necessary to hammer them into their respective drilled holes and this can lead to damage to the end of the plugs. As the head 20 engages accurately with the forward inner end of the plug, there is the additional advantage that driving force is applied directly to the front of the plug adjacent the leading part of the thread which cuts into the wall and as maximum torque is applied to the plug it is driven smoothly into the hole 33 and engages by means of its thread 17.
  • the advantage of using the powered member 18 to drive the fixing screw into the plug is of course that no manual labour is required, thus overcoming any difficulties should a slightly oversized screw be used with a particular fixing plug, which could make manual driving in difficult.
  • the member 18 would be sold with a multiplicity of fixing plugs, for example 50, as a kit of parts. Fixing screws for the plugs could also be provided in said kit. The member 18 could of course be sold alone.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A method of fixing a fitting (34) to a wall (31) comprising drilling a hole (33) in the wall using a drill tip (20) of a member (18) rotatably engaged with a drill, securing a fixing plug (10) in said hole (33) by engaging said tip with a forward inner end of the fixing plug and rotatably driving the plug into the hole, and disposing the fitting at said wall (31) and driving a screw (35) through the fitting and into engagement with the fixing plug by means of said tip engaging a head of the screw.

Description

FIXING METHOD AND APPARATUS
This invention relates to a method of and apparatus for fixing a fitting at a surface of a wall or other member, this primarily being plasterboard or cellular block material. As used hereinafter, the term 'wall' includes all equivalent members.
An object of the invention is to provided such a method and apparatus for use in such a method in an effective and convenient form.
According to one aspect of the invention there is provided a method of fixing a fitting at or adjacent a wall comprising providing a member having one end intended to be engaged with a drill for rotatively driving the member, in use, the member having a head at its opposite end, drilling a hole in a surface of said wall by means of the head of said member, providing a fixing plug, driving said plug into said hole by means of the head of said member, disposing the fitting at or adjacent said wall and passing a fixing means through the fitting and into engagement with said plug, thereby to secure said fitting at or adjacent the wall.
Preferably said fixing means, in the form of a screw, is driven through said fitting and into engagement with said plug by means of the head of said member, as said member is rotatively driven by said drill.
According to a further aspect of the invention there is provided apparatus for use in fixing a fitting at or adjacent a wall, the apparatus comprising a member having one end adapted for engagement with a drill for rotatively driving the member, in use, the member having a head at its opposite end, said head being configurated to drill a hole in a surface of said wall, for reception of a fixing plug, and to drive said plug into said hole, in use.
Preferably said head is sized and shaped so that it can drive a fixing means, preferably a screw, through the fitting and into engagement with said plug, in use.
According to a still further aspect of the invention there is provided a kit of parts for carrying out said method, the kit of parts comprising said member and a multiplicity of said fixing plugs.
Preferably a number of said fixing means, preferably screws, equal to the number of fixing plugs are supplied in the kit of parts.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 is a side view of a fixing plug for use in the method of the invention;
Figure 2 is a perspective view of the fixing plug;
Figure 3 is a front end view of the fixing plug;
Figure 4 and 5 are a rear end view and cross-sectional view on the line 5-5 of Figure 4 respectively of the fixing plug;
Figure 6 and 7 are views of the same form as in Figures 4 and 5 but with rear view and the section, on the line 7-7 , taken with the fixing plug rotated 45° from the respective positions in Figures 4 and 5;
Figure 8 is a side view of a head of a member of apparatus of the invention;
Figure 9 is a top view of said head;
Figure 10 is an underneath view of said head;
Figure 1 1 is a section of said head on the line 11-1 1 of Figure 10;
Figure 12 is an enlarged scale, exploded perspective view of the head and a shank of said member; and
Figures 13 to 16 diagrammatical ly show respective steps of the method of the invention for fixing a fitting to a wall.
The present invention is largely concerned with fixing a fitting to a surface of a wall, particularly a wall of plasterboard or cellular block material, such material, as is well known, requiring the use of a fixing plug with which a screw can engage.
Figures 1 to 7 show a fixing plug 10 used in the method of one aspect of the present invention, a number of these fixing plugs being sold, as will be described, in a kit of parts according to a further aspect of the present invention.
The fixing plug 10 is of plastics material, preferably nylon and comprises a circular end flange 1 1 forming a head of the plug, from which extends a shank 12 which is generally cylindrical except at its forward end 13 remote from the head, where it is frusto-conical. The shank is hollow having a circular opening 14 therethrough, the opening extending through the flange 11. Formed in the exterior surface of the shank and extending longitudinally parallel to the axis of the opening 14 are four slots 15 spaced equi-angularly around the shank. Each slot extends inwards to break into the opening 14 through the shank, so that in the interior of the shank 12 and flange 1 1 are formed four equi-angularly spaced, longitudinally extending ribs 16. Around the exterior of the shank is a helical thread 17.
Figures 8 to 12 show the detail of a member 18 in the form of a drill, or drive, bit of one aspect of the invention, the member being for use in a further aspect of the invention relating to the fixing method. The member 18 also forms part of the kit of parts of a further aspect of the invention.
The member 18 is made up of a steel circular shank 19 and a carbide tip or head 20 braised, welded or otherwise secured to the top of said shank. Alternatively the member can be in one piece.
As can be seen from Figures 8 to 10, the one-piece head 20 is effectively formed of two planar blades 21 , 22 respectively which mutually intercept centrally at 90°. The two blades have generally flat top surfaces 23, 24 respectively at the sides of which respective pairs of sloping surfaces 25, 26 extend, respective pairs of straight parallel side surfaces 27, 28 extending from the ends of the surfaces 25, 26. The blade 21 extends beyond the inner end of the blade 22. This extended part of the blade 21 is formed with grooves in its opposite faces between the side surfaces 27, thus creating a central inner part 29 of reduced thickness. As can be seen from Figure 12, the width of this part 29 corresponds to the diameter of the shank 19 which is provided with a diametral slot 30 in its one end, the width of which substantially corresponds to the reduced thickness of the part 29, the depth of the slot substantially corresponding to the amount by which the blade 21 extends beyond the inner end of the blade 22, so that the part 29 can be received snugly in the slot 30 so that the head 20 can be secured to the shank 19 by suitable means described above. Alternatively the head can be symmetrical and secured centrally to a flat end of the shank.
Thus the member 18 has its one end formed as a cylindrical shank and its other end formed as a drill or drive bit which, as can be seen from Figures 9 and 12 presents a generally cruciform leading part. As described above the surfaces 23 and 24 are generally flat, but these can in fact be slightly curved, as for example shown in Figures 8 and 1 1.
Figures 8 to 12 show the member 18 on a larger scale than the fixing plug 10 in Figures 1 to 7, but the shape and size of the member 18 is such that it can be inserted into the plug from the end thereof at which the flange 11 is formed, the forward part of the member 18 formed by the blades 21 and 22 engaging with the inner part of the forward end of the plug where the ribs 16 terminate. In this regard the shape and size of the smaller cruciform part, shown in Figure 9, and formed by the surfaces 23, 24 substantially corresponds to the opening 14, whilst the larger cruciform part formed by the surfaces 25, 26 together with the surfaces 27, 28 correspond in shape and size to the slots 15, so that the end of the head can be accurately received into the plug through the opening 14 and slots 15 from the end of the plug at which the flange is formed, the ribs 16 locating between adjacent blades 21 , 22.
If the member 18 is formed in one piece, the respective outer peripheral surfaces 27 of the blades lie on a circle concentric with and having the same diameter as the circle describing the periphery of the shank, the sides of the blades blending smoothly into the shank suface.
The member 18 is adapted, by means of the size and shape of the head 20, to perform three operations in the method of securing a fitting to a wall surface by means of the fixing plug 10. The steps of such a method are shown in Figures 13 to 16.
Firstly the cylindrical end of the shank 19 remote from the head 20 is engaged in the normal way, as with a drill bit, with the chuck of a power drill or equivalent member which provides rotary motion to the member 18. Figures 13, 15 and 16 show a wall 31 , with an outer surface 32, the wall being, for example, of plasterboard or cellular block material. As shown in Figure 13, the member 18, rotatably driven as described, is used to drill a hole 33 into the wall 31, this typically being of at least 38 mm deep. The head and shank design of the member 18 allows the clearance of debris, particularly as the diameter of the shank is relatively small.
Once the required hole 33 has been drilled, the member 18 is withdrawn therefrom and a fixing plug 10 is loaded onto the member 18, the head 20 being pushed fully into the plug so that, as described, the end of the head 20 snugly engages the inner end of the plug 10. The plug on the end of the member 18 is then presented up to the hole 33 so that its forward end 13 is at the opening of the hole in the surface 32, and the drill is then operated to drive the member 18 which, as the drill is advanced, causes the plug to be driven into the hole 33. This continues until the flange 11 is flush with the surface of the wall 32, the plug then being disposed as shown in Figure 16. The member 18 is then pulled out from the plug, which remains tightly engaged in the wall 31 , by virtue of its thread 17, as the member 18 is withdrawn.
Finally a fitting 34, such as timber or the like, is presented up to the surface 32 at the location of the plug 10 and fixing means in the form of a cross-head fixing screw 35 (such as Philips, Posidriv or Supradriv) is passed through the fitting 34 and into engagement with the interior of the plug 10, until, as shown in Figure 16, the head of the screw 35 is flush with the outer surface of the fitting 34.
Normally the fitting would be preformed with a required countersunk bore for reception of the screw 35, although with fittings 34 of certain materials, it may be possible to drive the screw through the fitting and into engagement in the plug without the provision of a pre-formed bore in the fitting, the screw forming its own bore.
As will be appreciated, the shape and size of the end of the head, particularly the smaller cruciform part formed by the surfaces 23, 24 matches the cruciform slot in the head of the screw so that the head 20 accurately engages with the head so that drive to the member 18 is effectively transmitted to the screw 35 so as to drive the screw through the fitting 34, whether provided with countersunk bore or not, and into engagement with the plug 10. The part of the screw entering the plug 10 tightly engages therewithin to provide a secure fixing of the fitting 34 to the wall 32 as shown in Figure 16. Of course where a countersunk bore is already provided in the fitting 34, it will be possible for the screw to be manually engaged in the bore until the end of the screw is just flush with the rear surface of the fitting 34, the fitting then being positioned at the plug 10 and the remaining driving of the screw being effected by the member 18. Alternatively the screw could be fully screwed in solely manually. The fitting need not, in its final state, be engaged against the wall surface, if this is not required.
With the size of hole referred to above, and with a typical sized plug, a No. 10 wood screw is suitable for fixing a fitting 34 in the form of timber, the screw needing to penetrate at least 25 mm into the plug for a secure fitting. It will however be appreciated that these dimensions are by way of example only.
It will be appreciated that the present invention is particularly advantageous in that a single drill or drive bit 18 can be used for all three parts of the fixing operation, the member 18 thus remaining engaged with the drill for as many fixing plugs as need to be secured. Additionally no other tools, such as a hammer or a screw driver, are required to insert the plugs and to tighten fixing screws. With many known fixing plugs it is necessary to hammer them into their respective drilled holes and this can lead to damage to the end of the plugs. As the head 20 engages accurately with the forward inner end of the plug, there is the additional advantage that driving force is applied directly to the front of the plug adjacent the leading part of the thread which cuts into the wall and as maximum torque is applied to the plug it is driven smoothly into the hole 33 and engages by means of its thread 17. The advantage of using the powered member 18 to drive the fixing screw into the plug is of course that no manual labour is required, thus overcoming any difficulties should a slightly oversized screw be used with a particular fixing plug, which could make manual driving in difficult.
It is envisaged that the member 18 would be sold with a multiplicity of fixing plugs, for example 50, as a kit of parts. Fixing screws for the plugs could also be provided in said kit. The member 18 could of course be sold alone.

Claims

1. A method of fixing a fitting at or adjacent a wall comprising providing a member having one end intended to be engaged with a drill for rotatively driving the member, in use, the member having a head at its opposite end, drilling a hole in a surface of said wall by means of the head of said member, providing a fixing plug, driving said plug into said hole by means of the head of said member, disposing the fitting at or adjacent said wall and passing a fixing means through the fitting and into engagement with said plug, thereby to secure said fitting at or adjacent the wall.
2. A method as claimed in claim 1, wherein said head accurately engages with a forward inner end of the fixing plug to apply driving force to the front of the plug.
3. A method as claimed in claim 2, wherein said driving force causes the leading part of a thread on said front of the fixing plug to cut into the wall as it is driven into said hole.
4. A method as claimed in any one of claims 1 to 3, wherein the fixing means is a screw which passes through a pre-formed bore in the fitting.
5. A method as claimed in any one of claims 1 to 3, wherein the fixing means is a screw which, in passing through the fitting, forms its own bore.
6. A method as claimed in any one of the preceding claims, wherein the engagement of the fixing means with said plug forces the fitting into engagement with said surface of the wall.
7. A method as claimed in any one of the preceding claims, wherein the fixing means is driven through the fitting by said member upon operation of said drill, in use.
8. A method as claimed in claim 7, wherein said head of said member engages in a matching slot in a head of said fixing means rotatably to drive said fixing means through said fitting and into said plug, in use.
9. A method as claimed in any one of claims 1 to 8, wherein the fixing means is a screw.
10. Apparatus for use in fixing a fitting at or adjacent a wall, comprising a member having one end adapted for engagement with a drill for rotatably driving the member, in use, the member having a head at its opposite end, said head being configurated to drill a hole in a surface of said wall, for reception of a fixing plug, and to drive said plug into said hole, in use.
1 1. Apparatus as claimed in claim 10, including said fixing plug, wherein said head of the member and a forward inner end of the fixing plug are complementarily shaped so that, in use, the head accurately engages with said end of the fixing plug to apply driving force to the front of the plug.
12. Apparatus as claimed in claim 10 or claim 11 , wherein the fixing plug comprises a hollow shank with an exterior thread thereon at least at said front of the plug.
13. Apparatus as claimed in claim 12, wherein the shank is longitudinally slotted.
14. Apparatus as claimed in any one of claims 10 to 13, wherein the fixing plug has an end flange to limit the driving of the plug into said hole, in use.
15. Apparatus as claimed in any one of claims 10 to 14, wherein said member is formed with a cylindrical shank as said one end, and with a drill tip as said head at its opposite end, the tip being secured to said shank.
16. Apparatus as claimed in claim 15, wherein the tip is formed of two planar blades which mutually intercept centrally at 90°.
17. Apparatus as claimed in claim 16, wherein the blades have respective flat top surfaces, at the sides of which respective pairs of sloping surfaces extend.
18. Apparatus as claimed in any one of claims 10 to 17, wherein the head of the member is a carbide tip.
19. Apparatus as claimed in any one of claims 10 to 17, wherein the fixing plug is of plastics material.
20. Apparatus as claimed in any one of claims 10 to 19, wherein said head of the member is sized and shaped so that it can drive a fixing means through the fitting and into engagement with said plug, in use.
21. A kit of parts for carrying out the method of any one of claims 1 to 9, comprising said member and a multiplicity of said fixing plugs.
22. A kit of parts as claimed in claim 21 , including a number of fixing means equal to the number of fixing plugs.
PCT/GB1993/001657 1992-08-05 1993-08-05 Fixing method and apparatus WO1994003734A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929216853A GB9216853D0 (en) 1992-08-05 1992-08-05 Fixing method and apparatus
GB9216853.3 1992-08-05

Publications (1)

Publication Number Publication Date
WO1994003734A1 true WO1994003734A1 (en) 1994-02-17

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WO (1) WO1994003734A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276689B (en) * 1993-02-17 1996-09-04 David Dennis Dunkley Anchoring fasteners
DE29812947U1 (en) * 1998-07-21 1999-12-09 fischerwerke Artur Fischer GmbH & Co. KG, 72178 Waldachtal Screw-in dowels for soft building materials
FR2895295A1 (en) * 2005-12-23 2007-06-29 Black & Decker Inc Cross threaded screwdriver bit for e.g. piercing reception hole, has coaxial piercing point situated inside tapered cover revolution surface forming angle with respect to axis of bit, where angle is greater than angle that forms end sides
WO2007083233A1 (en) * 2006-01-23 2007-07-26 Société de Prospection et d'Inventions techniques SPIT Anchor for friable material
US20110262235A1 (en) * 2010-04-23 2011-10-27 Garfield Theodore F Reusable low cost drill for drywall

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GB540073A (en) * 1940-07-22 1941-10-03 Ferranti Ltd Improvements in or relating to metal drills
DE9113137U1 (en) * 1991-02-28 1992-01-02 allfa Dübel GmbH, 4650 Gelsenkirchen Kit for screwing dowels into porous material
DE4039831C1 (en) * 1990-12-13 1992-06-04 Upat Gmbh & Co, 7830 Emmendingen, De Object fastener to lightweight wall - has tool stem on setting tool as flat rod, whose drill tip is movable through insert inner cavity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB540073A (en) * 1940-07-22 1941-10-03 Ferranti Ltd Improvements in or relating to metal drills
DE4039831C1 (en) * 1990-12-13 1992-06-04 Upat Gmbh & Co, 7830 Emmendingen, De Object fastener to lightweight wall - has tool stem on setting tool as flat rod, whose drill tip is movable through insert inner cavity
DE9113137U1 (en) * 1991-02-28 1992-01-02 allfa Dübel GmbH, 4650 Gelsenkirchen Kit for screwing dowels into porous material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276689B (en) * 1993-02-17 1996-09-04 David Dennis Dunkley Anchoring fasteners
DE29812947U1 (en) * 1998-07-21 1999-12-09 fischerwerke Artur Fischer GmbH & Co. KG, 72178 Waldachtal Screw-in dowels for soft building materials
FR2895295A1 (en) * 2005-12-23 2007-06-29 Black & Decker Inc Cross threaded screwdriver bit for e.g. piercing reception hole, has coaxial piercing point situated inside tapered cover revolution surface forming angle with respect to axis of bit, where angle is greater than angle that forms end sides
WO2007083233A1 (en) * 2006-01-23 2007-07-26 Société de Prospection et d'Inventions techniques SPIT Anchor for friable material
FR2896551A1 (en) * 2006-01-23 2007-07-27 Prospection & Inventions ANCHORING ANKLE FOR FRIENDLY MATERIAL
AU2007206672B2 (en) * 2006-01-23 2011-05-26 Societe De Prospection Et D'inventions Techniques Spit Anchor for friable material
US20110262235A1 (en) * 2010-04-23 2011-10-27 Garfield Theodore F Reusable low cost drill for drywall

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