GB2094919A - Expansion anchor bolt - Google Patents
Expansion anchor bolt Download PDFInfo
- Publication number
- GB2094919A GB2094919A GB8205602A GB8205602A GB2094919A GB 2094919 A GB2094919 A GB 2094919A GB 8205602 A GB8205602 A GB 8205602A GB 8205602 A GB8205602 A GB 8205602A GB 2094919 A GB2094919 A GB 2094919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- bolt
- expansion anchor
- spreader
- borehole
- 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- Withdrawn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
- 125000006850 spacer group Chemical group 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 16
- 230000003313 weakening effect Effects 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- F16B13/063—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 by the use of an expander
- F16B13/066—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 by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
-
- 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
- F16B13/045—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 having axially compressing parts allowing the clamping of an object tightly to the wall
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A high-load expansion anchor bolt has a threaded bolt 1 with a conical nut 5 engaging a longitudinally split sleeve 3. The bolt also carries a deformable annular member 4 and a spacer sleeve 2. The load is secured by a nut 13 and washer 12. The split sleeve 3 is characterised by longitudinal slots 8 which extend from an internally chamfered end 10 through a groove 6 adjacent the other end, the segments 9 so formed being joined together by a collar portion 7. In use the anchor is secured in a masonry hole both by expansion of the segments 9 and deformation expansion of the annular member 4. <IMAGE>
Description
SPECIFICATION
Expansion anchor
The invention relates to a high-load expansion anchor for mounting articles to masonry.
High-load expansion anchors of this type are known from the German utility model 79 12 896.
With the high-load expansion anchor as described and shown therein, the spreader sleeve is provided with several longitudinal slots arranged on the circumference of the spreader sleeve which are aimed at facilitating the expansion of the spreader sleeve when the conical or tapered part is inserted into the spreader sleeve. The spreader sleeve itself is made of rolled sheet metal and, in addition to the already mentioned slots, is provided with one slot extending the entire length of the spreader sleeve, with this slot resulting from the abutting of the ends of the sheet metal part subsequently to the rolling. Within the insertion area of the conical part, the spreader sleeve is provided with a chamfered portion of the kind as known, for example, from the Swiss Patent No. 493 749.
Moreover, the spreader sleeve is provided with annular grooves by which the minimum insertion or locking depth of the spreader sleeve is determined. A facilitating reaching of the optimal spreading path and a possible re-tensioning, however, is not achieved by the type of high-load expansion anchor according to the German utility model 79 12896.
Moreover, from the German
Offenlegungsschrift (DE-OS) 26 13 499 and
DE-OS 29 14 074 there is known an anchor for anchoring in the mounting hole of a building, having a truncated-cone-shaped interior surface, and in which there is provided a ring of shells surrounding the bolt between its extreme end and its head, with the shells being held together in a radially flexible manner by a holding ring and, for expanding the ring of shells, capable of being moved axially on to a head. In this device the shells form one part with the holding ring and are in a flexible connection therewith. The subject matter of the present invention is based on this particular part of the embodiment of the expansion sleeve, but of course for a cylindrical borehole.
It is the object of the invention to provide an expansion anchor consisting of parts which are easy to manufacture, with no special requirements being placed on the materials used therefore, and in which, moreover, means are provided for enabling an optimum amount of spreading or expansion for obtaining a firm seating of the expansion anchor within a borehole, and in which additional means are provided which, upon having obtained the firm seating of the expansion anchor within the borehole, permit a subsequent tightening of the article or object to be secured with the aid of the expansion anchor, without affecting or changing the already obtained firm seating.
According to the invention there is provided a high-load expansion anchor, comprising an internal bolt having an external thread, a spacer sleeve mounted onto said bolt, a spreader sleeve likewise mounted on to said bolt, the spreader sleeve being subdivided into individual segments by slots extending in direction towards the spacer sleeve, the spreader sleeve being provided with a collar for holding together the segments, a tapered nut having an internal thread which is engaged by the end of the threaded bolt as inserted into a borehole, with said conical nut being screwed in such a way on to said threaded bolt that it, upon turning of said threaded bolt, is pulled in the tightening direction with its side having the smaller diameter, into said spreader sleeve, thus radially expanding the segments and, upon further tightening of the bolt, is pressed against the wall of the borehole, characterised in that said longitudinal slots are arranged on the circumference of said spreader sleeve and completely traverse a groove worked radially into said spreader sleeve, individual segments which result from said slots being held together by said collar, and in that a ring of a material which is deformable within certain limits is arranged between said collar of said spreader sleeve and said spacer sleeve.
From British Patent No. 433 038 there has already become known an anchor in which, on the anchorage bolt, between two conically designed parts, compressible washers of a material having different degrees of hardness are arranged. When tightening the anchorage bolt after the anchor is inserted in the borehole, these washers are deformed in such a way that the borehole is completely filled out under pressure between the two conical parts thus achieving a tight seating of the anchor in the borehole as well as as a protection against twisting and also a protection against the penetration of humidity into the borehole. These conventional types of anchors, however, are unsuitable for mounting high loads, and are incapable of solving the problem underlying the present application.
Moreover, from the British Patent No.
1,471,763 there has become known a bolt anchoring device in which a washer of deformable material, arranged between a spacer disposed between the screw-threaded bolt and a subsequently arranged expansible sleeve, is provided with slots which are equally spaced in the circumferential direction and has a tapered portion which, upon tightening of the screwthreaded bolt, is drawn into the expansible sleeve.
In this conventional type of bolt anchoring device, however, there are not provided any means permitting an optimum expansion path for achieving a tight seating of the anchor in the prepared borehole, so that also the bolt anchoring device as known from this printed publication is incapable of solving the problem underlying the present invention.
However, the combination of features of the present invention, i.e.
- the slots which are equally spaced on the circumference of the expansible sleeve, completely traversing the radial groove provided in the expansible. sleeve,
-the individual segments, resulting from the slots, which are merely held together by the collar of the expansible sleeve, and - between this collar of the expansible sleeve and the collar of the spacer sleeve the ring of a
material which is deformable within certain limits,
makes it possible to obtain an optimum amount of expansion for achieving a tight seating of the anchor in the prepared borehole, and also permits a re-tensioning of the object to be fixed by the high-load expansion anchor without changing in any way the already obtained tight seating of the anchor in the prepared borehole.
The invention will now be described with reference to some examples shown in Figs. 1 to 7 of the accompanying drawings, in which:
Fig. 1 is the side view of a high-load expansion anchor, partly in a sectional representation,
Fig. 2 is a side view of an expansible sleeve, partly in a sectional elevation,
Fig. 3 is the top view of an expansible sleeve in a section taken on line A-A of Fig. 2,
Fig. 4 is the side view of an annular member,
Fig. 5 is the top view of an annular member as shown in Fig. 4,
Fig. 6 shows a high-load expansion anchor according to Fig. 1, entered into the prepared borehole, after the conical part has been retracted into the expansible sleeve, and
Fig. 7 shows a high-load expansion anchor according to Fig. 6, entered into a prepared borehole, in its condition after the object to be fixed has been tightened.
In Fig. 1, the reference numeral 1 indicates a bolt which, throughout its entire length, is provided with an external thread. The bolt 1, at its end capable of being entered into a prepared borehole in a wall, is provided with a chamfered portion 1' and, at its opposite end, with a chamfered portion 1", as well as with a suitable opening or recess 14 for the application of a tool, such as a screwdriver, for turning the bolt in the ready mounted state of the high-load expansion armature after the latter has been entered into the borehole.
The individual parts of the high-load anchor are arranged on the bolt 1 as follows: To the chamfered end 1' a conical part 5 having an internal bore and an internal thread, is screwed in such a way that the conical surface 5' points in direction towards the end of the bolt 1 which is provided with the screwdriver recess 1 4. The expansible sleeve 3 is arranged on the bolt 1 so that the end of the expansible sleeve 3 which is provided with the longitudinal slots 8 comes to lie on the conical surface 5' of the part 5 and the other end of the expansible sleeve 3, which is provided with a collar 7, comes to lie against the one face side of an annular member 4 through the centre bore 4' of which the bolt 1 is likewise passed.The other face side of the annular member 4 is followed by a tubular spacer sleeve 2 which is slipped on to the bolt 1, and which may be provided with one or more knurls 2' and a setoff collar 2". After this, a washer 12 is slipped on to the bolt 1 and a nut 13 is loosely screwed on to the end of the bolt 1 which is provided with the screwdriver recess 1 4.
In this state, the expansion anchor is readily assembled for being entered into a prepared borehole.
All parts of the expansion anchor, with the exception of the annular part 4, are of metal. The annular part 4 consists of a material which is deformable within certain limits, for example, of a plastics material.
Figs. 2 and 3 show an expansible sleeve 3 as an individual part in a sectional representation. The expansible sleeve 3 consists of a tubular body whose wall thickness is reduced within the area of the annular groove 6. Owing to the fact that the slots or indentations 8, e.g. crosswisely, as is shown in Fig. 3, extend in the longitudinal direction of the expansible sleeve 3, the latter is subdivided into several segments 9. The slots 8 start on the end 10 of the sleeve 3 which, compared with the original wall thickness of the sleeve 3, is reduced owing to the inclined or conical internal surface 11 extending over the entire circumference of the expansible sleeve 3.
The slope of the surface 11 is adapted to the conic form of the conical surface 5'. The slots 8, as can be seen from Fig. 2, end at the point at which the groove 6 changes over into the collar 7 of the expansible sleeve 3, so that the segments 9 of the sleeve 3 are held together by the collar 7.
Figs. 4 and 5 show a ring 4 having a bore 4' which, when slipped on to the bolt 1 , as can be seen from Fig. 1, comes to lie against the collar 7 of the expansible sleeve 3. This ring is made from a relatively soft, deformable material, such as a plastics material which, however, at the same time is tough and breakproof. This ring 4, disposed in the ready assembled state of the expansion anchor according to Fig. 1, between the collar 7 of the expansible sleeve 3 and the collar 2" of the spacer sleeve 2 permits, as will be described in detail hereinafter, at any time a re-tensioning of the high-load expansion anchor for the flush mounting of an object to be fixed by virtue of the expansion anchor e.g. to a wall.
Fig. 6 shows an expansion anchor according to the invention in the position as entered into a prepared borehole 1 7 provided for in the masonry 1 6. The anchor is as shown in Fig. 1 in which all individual parts of the expansion anchor are mounted on to the bolt 1 but, apart from the mere application between the parts, have not yet been brought into their operative position among each other, i.e. in which the diameter dimension a (see
Fig. 1) for all parts as arranged on the bolt 1, with the exception of the washer 12 and the nut 1 3, has not yet been exceeded.
If now, for example, with the aid of a screwdriver inserted into the recess 14, the bolt 1 is turned in its stage as extending into the prepared borehole 17, then the conical part 5 is drawn into the expansible sleeve 3. In consequence of this, the segments 9, over the slope 11 on which the conical part 5 runs with its conical surface 5', are pressed against the wall of the prepared borehole. Obtaining the optimum amount of expansion is substantially facilitated by the groove 6, i.e. the cross-sectional reduction of the wall thickness of the expansible slceve 3, without the segments 9 having to form individual parts which would have to be held together by an additional part prior to the entering into the borehole 17.
Turning of the bolt 1 with the aid of the screwdriver may then be continued until reaching a firm seating of the expansion anchor inside the borehole 1 7. This firm seating is reached when the conical part 5, as far as is permitted by the diameter of the borehole 1 7, has been drawn into the expansible sleeve. 3. The segments 9 of the expansible sleeve 3 are then firmly applied with a majority of their external surface by the conical part 5, to the wall of the borehole 1 7. In this mounting phase of the expansion anchor inside the borehole 1 7 as shown in Fig. 6, no pressure has yet been exerted upon the ring 4.The article 15 to be secured to a wall, a ceiling, or a floor is still loosely slipped on to the bolt 1 or else, in the position of the expansion anchor as firmly seated in the borehole 17, and shown in Fig. 6, may be slipped on to the bolt 1 on which it is secured with the aid of a washer 12 and a nut 13.
If now, as is shown as the end position in Fig. 7, and with the aid of e.g., a wrench (spanner), the nut 13 is turned in the tightening direction, there will also be effected a fixing of the article 1 5 to the masonry 1 6. By way of example, an L-shaped bracket is shown in this drawing. During the mounting process, the spacer sleeve 2 is shifted in direction towards the collar 7 of the expansible sleeve 3 as firmly seated inside the borehole 17, by tightening the nut 13.In so doing, the ring 4 is compressed between the collar 7 of the expansible sleeve 3 and the setoff collar 2" of the spacer sleeve 2 and, in the course of this, deformed to such an extent that the periphery of the ring 4 will come to lie against the wall of the borehole 1 7 so that, in addition to the firm seating of the expansible sleeve 3 inside the borehole 1 7 the expansion anchor is still supported inside the borehole 1 7 at the point of the deformed ring 4.In this way, for example, in the case of an expansion anchor anchored in a perpendicular wall by a firm seating, e.g., by the action of a tensile force or by a weight acting upon the article 1 5 as secured to the masonry 16, the expansion anchor is prevented from tilting around the point of firm seating (conical part 5 and segments 9 of the expansible sleeve 3) inside the borehole 17, which otherwise might cause the firm seating (Fig. 6) inside the borehole 1 7 to become loose in the long run.
By the combined effect of the embodiment of the expansible sleeve 3, which includes:- - Subdivision by the slots 8 into individual segments 9, - providing a groove 6 in front of the collar 7 of the expansible sleeve 3 for reducing the thickness of the material at this particular point, - the slots 8 completely traverse the groove 6 as radially worked into the expansible sleeve 3, and by the arrangement of an annular member 4 between the collar 7 of the expansible sleeve 3 and the collar 2" of the spacer sleeve 2, - consisting of a material which is deformable with certain limits, there is obtained the optimum amount of expansion until reaching the firm seating of the expansion high-load anchor insider the prepared borehole 1 7.A re-tensioning of the article 1 5 to be secured becomes possible without changing the already obtained firm seating of the expansion anchor inside the prepared borehole 17, and any tilting moment likely to be cause by the slippage of the expansion anchor inside the borehole 1 7 is avoided by providing an additional support at the point at which the deformed ring 4 is in contact with the wail of the borehole when the article 1 5 to be secured is acted upon by a load.
The annular member 4 between the spacer sleeve 2 and the expansible sleeve 3 has the same external diameter as the two sleeves 2 and 3. This annular or ring-shaped part 4 consists of a relatively soft, deformable, tough and breakproof material.
By working the groove 6 into the circumference of the expansible sleeve 3 there is achieved a reduction in the thickness of the wall aimed at weakening the material at this particular point.
Claims (5)
1. High-load expansion anchor, comprising an internal bolt having an external thread, a spacer sleeve mounted on to said bolt, a spreader sleeve likewise mounted on to said bolt, the spreader sleeve being subdivided into individual segments by slots extending in direction towards the spacer sleeve, the spreader sleeve being provided with a collar for holding together the segments, a tapered nut having an internal thread which is engaged by the end of the threaded bolt as inserted into a borehole, with said conical nut being screwed in such a way on to said threaded bolt that it, upon turning of said threaded bolt, is pulled in the tightening direction with its side having the smaller diameter, into said spreader sleeve, thus radially expanding the segments and, upon further tightening of the bolt, is pressed against the wall of the borehole, characterised in that said longitudinal slots are arranged on the circumference of said spreader sleeve and completely traverse a groove worked radially into said spreader sleeve, individual segments which result from said slots being held together by said collar, and in that a ring of a material which is deformable within certain limits is arranged between said collar of said spreader sleeve ancl said spacer sleeve.
2. A high-load expansion anchor according to claim 1, characterised in that the ring as arranged between said spacer sleeve and said spreader sleeve has the same external diameter as said two sleeves.
3. A high-load expansion anchor according to claim 1 or 2, characterised in that said ring consists of a relatively soft, deformable, tough and breakproof material.
4. A high-load expansion anchor according to claim 1, characterised in that by cutting and said groove there is achieved a reduction in the wall thickness of said spreader sleeve, for the purpose of weakening the material of said sleeve at this particular point.
5. A high-load expansion anchor substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813110485 DE3110485A1 (en) | 1981-03-18 | 1981-03-18 | SPREADING ANCHOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2094919A true GB2094919A (en) | 1982-09-22 |
Family
ID=6127597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8205602A Withdrawn GB2094919A (en) | 1981-03-18 | 1982-02-25 | Expansion anchor bolt |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3110485A1 (en) |
| GB (1) | GB2094919A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2574135A1 (en) * | 1984-12-05 | 1986-06-06 | Olin Corp | EXPANSION ANKLE BY CONE |
| US4650384A (en) * | 1982-04-16 | 1987-03-17 | Mcintyre Douglas O | Expansion anchor |
| US4678383A (en) * | 1983-08-17 | 1987-07-07 | Hilti Aktiengesellschaft | Expansion anchor assembly |
| US4690597A (en) * | 1983-04-02 | 1987-09-01 | Heinrich Liebig | Positive arrangement for fastening a dowel |
| GB2190164A (en) * | 1986-03-15 | 1987-11-11 | Thos Johnson | Anchoring device |
| US4770581A (en) * | 1984-03-01 | 1988-09-13 | Dom Holdings Plc | Expansion anchor |
| US4940372A (en) * | 1987-02-21 | 1990-07-10 | Fischerwerke Artur Fischer Gmbh & Co. Kg | Anchoring plug |
| US6234734B1 (en) * | 1995-01-21 | 2001-05-22 | Glynwed International Plc | Blind fastener and blind fixing method |
| US6457922B1 (en) * | 2000-11-02 | 2002-10-01 | Chao-Yang Tsai | Expansion bolt assembly |
| GB2401414A (en) * | 2003-05-07 | 2004-11-10 | Plastisign Ltd | Expanding fastener for fixing a plate to a vehicle |
| DE10341950A1 (en) * | 2003-09-11 | 2005-04-28 | Mkt Metall Kunststoff Technik | Plug for attaching objects to pre-stressed concrete cavity roof panels comprises sleeve with longitudinal slits at its upper end which is spread by cone with threaded central bore, into which bolt is screwed |
| GB2410307A (en) * | 2002-02-14 | 2005-07-27 | Tyco Europe Metal Framing Ltd | A blind fastening device |
| WO2012167679A1 (en) * | 2011-06-10 | 2012-12-13 | Wen Shaosong | Invisible pressure expansion screw |
| WO2018157198A1 (en) * | 2017-03-01 | 2018-09-07 | Stephen Howell | Anchor bolt |
| WO2018209400A1 (en) * | 2017-05-17 | 2018-11-22 | Jeff Paul Verrall | Improved bolt apparatus |
| WO2021047995A1 (en) | 2019-09-12 | 2021-03-18 | Hilti Aktiengesellschaft | Expansion anchor |
| CN114754234A (en) * | 2022-05-26 | 2022-07-15 | 宁波浩泰电力工程设备有限公司 | Anchor expanding anchor foot bolt for petroleum exploration drill bit and preparation method of anchor expanding foot bolt |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3707510A1 (en) * | 1987-02-21 | 1988-09-01 | Fischer Artur Werke Gmbh | Dowel with expansion sleeve |
| EP0279936B1 (en) * | 1987-02-21 | 1990-10-03 | fischerwerke Artur Fischer GmbH & Co. KG | Dowel with an expansion sleeve |
| DE4225869C2 (en) * | 1992-08-05 | 1997-12-04 | Itw Befestigungssysteme | Dowels |
| DE19915474A1 (en) * | 1999-04-06 | 2000-10-12 | Fischer Artur Werke Gmbh | Expansion dowels |
| DE102006031467A1 (en) * | 2006-07-07 | 2008-01-10 | Fischerwerke Artur Fischer Gmbh & Co. Kg | expansion anchor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1450992A1 (en) * | 1965-03-02 | 1969-04-10 | Artur Fischer | Duebel for fastening objects in building materials |
| DE2458317B2 (en) * | 1974-12-10 | 1979-04-05 | Heinrich 6102 Pfungstadt Liebig | Expansion anchor |
| GB1471763A (en) * | 1975-03-17 | 1977-04-27 | Rawlplug Co Ltd | Bolt anchoring device |
| DE2637043C2 (en) * | 1976-08-17 | 1986-04-10 | Hilti Ag, Schaan | Dowel with spacer |
-
1981
- 1981-03-18 DE DE19813110485 patent/DE3110485A1/en not_active Withdrawn
-
1982
- 1982-02-25 GB GB8205602A patent/GB2094919A/en not_active Withdrawn
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650384A (en) * | 1982-04-16 | 1987-03-17 | Mcintyre Douglas O | Expansion anchor |
| US4690597A (en) * | 1983-04-02 | 1987-09-01 | Heinrich Liebig | Positive arrangement for fastening a dowel |
| US4678383A (en) * | 1983-08-17 | 1987-07-07 | Hilti Aktiengesellschaft | Expansion anchor assembly |
| US4770581A (en) * | 1984-03-01 | 1988-09-13 | Dom Holdings Plc | Expansion anchor |
| EP0187079A1 (en) * | 1984-12-05 | 1986-07-09 | Illinois Tool Works Inc. | Plug using a conical expanding member |
| FR2574135A1 (en) * | 1984-12-05 | 1986-06-06 | Olin Corp | EXPANSION ANKLE BY CONE |
| GB2190164A (en) * | 1986-03-15 | 1987-11-11 | Thos Johnson | Anchoring device |
| GB2190164B (en) * | 1986-03-15 | 1990-02-14 | Thos Johnson | Fastening device |
| US4940372A (en) * | 1987-02-21 | 1990-07-10 | Fischerwerke Artur Fischer Gmbh & Co. Kg | Anchoring plug |
| US6234734B1 (en) * | 1995-01-21 | 2001-05-22 | Glynwed International Plc | Blind fastener and blind fixing method |
| US6457922B1 (en) * | 2000-11-02 | 2002-10-01 | Chao-Yang Tsai | Expansion bolt assembly |
| GB2410307A (en) * | 2002-02-14 | 2005-07-27 | Tyco Europe Metal Framing Ltd | A blind fastening device |
| GB2410307B (en) * | 2002-02-14 | 2005-11-23 | Tyco Europe Metal Framing Ltd | Device |
| GB2401414B (en) * | 2003-05-07 | 2006-02-22 | Plastisign Ltd | Apparatus and method for fixing a plate to a vehicle |
| GB2401414A (en) * | 2003-05-07 | 2004-11-10 | Plastisign Ltd | Expanding fastener for fixing a plate to a vehicle |
| DE10341950A1 (en) * | 2003-09-11 | 2005-04-28 | Mkt Metall Kunststoff Technik | Plug for attaching objects to pre-stressed concrete cavity roof panels comprises sleeve with longitudinal slits at its upper end which is spread by cone with threaded central bore, into which bolt is screwed |
| WO2012167679A1 (en) * | 2011-06-10 | 2012-12-13 | Wen Shaosong | Invisible pressure expansion screw |
| WO2018157198A1 (en) * | 2017-03-01 | 2018-09-07 | Stephen Howell | Anchor bolt |
| WO2018209400A1 (en) * | 2017-05-17 | 2018-11-22 | Jeff Paul Verrall | Improved bolt apparatus |
| CN110914555A (en) * | 2017-05-17 | 2020-03-24 | 杰夫·保罗·韦瑞尔 | Improved bolt arrangement |
| AU2018271147B2 (en) * | 2017-05-17 | 2021-11-04 | Jeff Paul Verrall | Improved bolt apparatus |
| US11614115B2 (en) | 2017-05-17 | 2023-03-28 | Jeff Paul Verrall | Bolt apparatus |
| WO2021047995A1 (en) | 2019-09-12 | 2021-03-18 | Hilti Aktiengesellschaft | Expansion anchor |
| JP2023501047A (en) * | 2019-09-12 | 2023-01-18 | ヒルティ アクチエンゲゼルシャフト | expansion anchor |
| US12012985B2 (en) | 2019-09-12 | 2024-06-18 | Hilti Aktiengesellschaft | Expansion anchor |
| CN114754234A (en) * | 2022-05-26 | 2022-07-15 | 宁波浩泰电力工程设备有限公司 | Anchor expanding anchor foot bolt for petroleum exploration drill bit and preparation method of anchor expanding foot bolt |
| CN114754234B (en) * | 2022-05-26 | 2024-05-17 | 宁波浩泰电力工程设备有限公司 | Expansion anchor foundation bolt for petroleum exploration drill bit and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3110485A1 (en) | 1982-09-30 |
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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) |