WO2000019113A1 - Blind bolting - Google Patents
Blind bolting Download PDFInfo
- Publication number
- WO2000019113A1 WO2000019113A1 PCT/AU1999/000825 AU9900825W WO0019113A1 WO 2000019113 A1 WO2000019113 A1 WO 2000019113A1 AU 9900825 W AU9900825 W AU 9900825W WO 0019113 A1 WO0019113 A1 WO 0019113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- collar
- fastener
- substrate
- thread
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000000806 elastomer Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000010727 head pressing Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000003313 weakening 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/02—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws divided longitudinally
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
- F16B35/045—Specially-shaped ends for retention or rotation by a tool
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/005—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts engaging the bolt laterally to allow a quick mounting or dismounting of the washer, i.e. without the need to engage over the end of the bolt
- F16B43/006—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts engaging the bolt laterally to allow a quick mounting or dismounting of the washer, i.e. without the need to engage over the end of the bolt in two or more parts hingedly connected
Definitions
- This invention concerns the use of threaded fasteners, particularly the field of bolts adapted to be installed entirely from one side of a hole. Such fasteners are commonly referred to as blind bolts.
- toggle bolt One type of fastener often used where access to one side of a hole is unavailable is that which is commonly referred to as a toggle bolt. It requires a hole significantly larger than the bolt to be made and the threaded end of the bolt is then pushed through the hole while threaded to it is a toggle which folds out from the thread by spring assistance or by gravity and provides an arm or arms to bear against the far exit wall of the hole as the bolt is tightened.
- toggle bolts provide relatively low strength in comparison with the size of the hole required and also exhibit a wide variation in strength between apparently identical bolts. This makes them unsuitable for structural steel applications.
- the invention provides a method of installing a threaded fastener from one side of a hole through a substrate comprising
- the first portion may comprise a bolt-like component having an enlarged head portion at one end and a threaded tail portion at the other end and be passed head first through the hole in the substrate
- the support means may comprise a shaft which is threadedly engaged with the first portion of the fastener by way of a second thread portion on the tail
- the second thread preferably has a smaller diameter than the thread used to tension the fastener, and be of opposite hand
- the second thread is a male thread carried on the tip of the fastener
- the additional portion is preferably a washer-like collar having a hole therethrough and the support means passes through the hole in the collar as the collar is being passed through the hole in the substrate
- the collar preferably comprises two rigid halves joined by flexible hinge portions, and the collar folds to lie either side of the support means as the collar is being passed through the hole
- the hole through which the fastener is fastened may be the in-line combination of a plurality of shorter holes.
- the attachment of the support means to the fastener may be magnetic.
- the hinge portions are formed by a flexible material, preferably an elastomer, applied to a face of each half of the collar said face being at right angles to the axis of the hole through the collar.
- the elastomer is applied to a recess or recesses let into the relevant face.
- the flexible hinge portions Prior to said installation, the flexible hinge portions may be supported by thin rigid webs which are fractured by a user before the collar is folded around the support means.
- the support means comprises a shaft of a tool having a notch or notches onto which the collar latches, and the shaft is thinned, preferably flattened, where the collar latches on.
- the tool may have a sleeve axially slidable along the shaft and, after the collar has passed into the hole in the substrate, the sleeve is slid over said thinned portion and engaged with the shaft beyond each end of the thinned portion, to increase the torsional strength of the shaft while it restrains the first portion of the fastener from rotating as the nut is tightened.
- the shaft is separated from the fastener by rotating the shaft in the same direction as that taken by the nut as it was tightening.
- the collar has a boss or other axial protrusion which engages into the hole through the substrate when the fastener is tensioned.
- a sleeve may be fitted inside the hole around the fastener.
- a washer is provided between said nut and said substrate and, as the fastener is tightened, a boss on the washer engages into the hole through the substrate.
- Said first and additional portions of the fastener may each comprise a radial segment of a bolt-like component having an enlarged head portion, and each segment is passed through the hole in the substrate with the head portion first.
- the radial segments may be supported on the far side of the hole by a separate thin rod or wire attached to the threaded end of each radial segment.
- Figure 1 is an exploded view of a fastener assembly according to a first embodiment of the present invention
- Figure 2 is an exploded view of the fastener shown in Figure 1 together with its installation apparatus
- Figure 3 shows one component of the assembly shown in Figures 1 and 2;
- Figures 4 and 5 show the component of Figure 3 at various stages of folding
- Figure 6 is a cross section through an assembled form of the components shown in Figure 1.
- Figure 7 shows an alternative configuration for the component of Figure 3
- Figure 8 is a cross section through part of an assembled fastener showing the installed position of the component shown in Figure 7;
- Figure 9 is a cross section similar to Figure 8 but with an alternative to the component shown in Figure 7;
- Figure 10 is a cutaway partly exploded view showing a fastener according to a more preferred embodiment of the invention during installation;
- Figure 11 is a partial see-through side view of the installation tool shown in
- Figure 10 is a side view of a bolt component of the fastener shown in Figure 10;
- Figure 13 is a cross section view of a washer component of the fastener shown in
- Figure 14 is a cross section view of a collar component of the fastener shown in
- Figure 10 Figure 15 is a view along the bore axis of the collar shown in Figure 14 with hidden lines shown dashed;
- Figure 16 is a view of an alternative configuration of the collar shown in Figure 15;
- Figure 17 is a side view of a bolt in accordance with a further embodiment of the present invention.
- Figure 18 is an end view in the direction shown by the arrow A in Figure 17
- a fastener assembly comprises a bolt 2, nut 3 and washer 4
- the bolt joins two steel plates 5 and 6 by passing through holes 7 in them and being tensioned
- a sleeve 19 fills the annular gap between the bolt 2 and the walls of the holes 7
- the bolt 2 has a shank 8 with, at one end, a head 9 and, at the other end, a tail 10 which carries a conventional right-handed thread 11 to suit the nut 3
- the head 9 consists of a crown 12 integrally formed with the shank 8 and a collar 14
- the collar 14 has two half-collars 16 linked together by a backing strap 18 tightly attached to the half-collars
- the half-collars 16 are preferably made from hardened steel and the strap 18 made from thin spring steel strip or a strong plastics material such as Mylar
- the strap has some resilient property but this need not be sufficient to fully open out the collar to the position shown in Figure 3 After being folded to the position in Figure 5 it is sufficient that the resilience is sufficient to return it to the Figure 4 position
- Figure 6 shows the bolt 2 extending through the plates 5 and 6 with the washer 4 and nut 3 engaged
- the sleeve 19 neatly fills the annulus between the bolt and the holes 7 in the plates so that there is no possibility of movement lateral to the hole This allows the bolt to be used in a shear loading situation If there is little or no shear component to the loading, then the sleeve may be omitted from the assembly if required
- the sleeve 19 is sized to be a little shorter than the total length through the plates so that it is not compressed during tightening of the nut 3
- Figure 6 has been drawn with the nut wound on to the bolt just prior to commencement of tensioning
- the additional apparatus used to install the bolt 2 comprises an extension bar (or shaft) 20, a handle 21 and a spanner (not shown) to suit the nut 3.
- the extension bar 20 has a head portion 22 and a tail portion 24 separated by a thinned or waisted portion 26.
- the tail portion 24 has a left handed male thread 28 on its end.
- the tail 10 of the bolt has a short bore 30 which carries a left handed female thread and this engages with the male thread 28 on the tail portion 24.
- the crown 12 of the bolt is a gentle clearance fit through the holes 7.
- the extension bar 20 is first screwed into the tail of the bolt and the bolt is inserted through the aligned holes 7.
- the bolt 2 passes fully through the holes 7 using the extension bar 20 to support it on the far side.
- the collar 14 is then placed on the head 22 of the extension bar, in the orientation required on the far side of the hole, and is pushed along the bar until it reaches the waisted portion 26.
- the waist is a thin flat portion with its main faces oriented vertically when positioned as shown in Figure 2.
- the collar is folded to hinge at 32 along the backing strap 18 and is aligned to pass through the hole 7 when the waisted portion is pushed through the hole.
- the sleeve 19 is then fed onto the extension bar, along over the bolt, and then into the hole 7.
- the outside and inside diameters of the sleeve 19 are selected to be a loose (but not sloppy) sliding fit to both the hole and the bolt respectively.
- the washer 4 and nut 3 are then fed onto the extension bar, engaged with the thread 11 and tightened with a spanner.
- the handle 21 has a fork 34 which engages a pair of diametrically opposed flats 37 on the tail portion of the extension bar 20 to prevent rotation of the bolt during tightening of the nut 3. After the bolt is tightened to the desired tension, the extension bar may be unscrewed using the handle 21 and attached to the next bolt to be installed.
- the external main thread 11 on the bolt is right handed whereas the thread 28 on the extension bar and its mating thread in the bore 30 are left handed. It will be appreciated that the handedness of these threads may be reversed if wished, providing the opposite relationship is retained.
- Typical nominal sizings for a 23 mm diameter hole in the steel plates 5 and 6 would be: diameter of bolt crown : 22 mm diameter of bolt shank: 16 mm outside diameter of collar: 36 mm if 4 mm thick
- the collar shown folded in Figure 2 is oriented so that the hinge 32 is inclined downwards towards the crown of the bolt.
- the backing strap 18 will be pressed between the collar 14 and steel plate 5.
- the collar 14 may be placed onto the extension bar in the opposite direction so that the backing strap finishes being pressed between the bolt crown 12 and collar 14. With this alternative, when the collar is folded at the waisted portion during installation, the hinge 32 is inclined upwardly towards the crown of the bolt.
- more than one collar may be installed on a bolt in order to increase the strength of the bolt's head of which the collar(s) form a part.
- the bolt thus has a head consisting of the crown, formed integrally with the shank, plus two or more collar layers captive but not affixed.
- the alternative collar 40 shown is very similar to that of Figure 3. A significant difference is that it carries a pair of flanges 42 on one face of the collar adjacent the bore. These curved flanges do not extend for the full perimeter of the bore in the collar and they thus take the form of a type of discontinuous boss on the collar.
- the width of the flanges 42 in the diametrical direction is slightly less than the clearance between the shank 8 of the bolt and the hole 7. The collar is thus able to take up the position shown in Figure 8 whereby the flanges 42 serve to prevent the collar and the bolt from moving relative to the hole.
- the collar in this embodiment consists of a pair of inter-engaged collar portions 50 and 51.
- Collar portion 50 has its backing strap 53 bearing against the crown 12 while portion 51 has its backing strap 54 bearing against the plate 5.
- One collar portion 50 is slid through the hole with its hinge inclined downwards towards the crown of the bolt while the other portion 51 is slid through the hole with its hinge inclined upwards towards the crown of the bolt.
- the mating faces 57 and 58 of the collar portions 50 and 51 respectively are circumferentially ridged in a manner that they neatly nest together.
- Collar portions 50 and 51 are not of the same shape.
- the ridgings are complementary and this cannot be achieved if the collar portions 50 and 51 have identical forms.
- the fastener shown is being installed through two steel plates 72 and 73 by a person who has access to only the near side 74 of the plates Holes 75 and 76 have been drilled in the plates 72 and 73 and after installation the fastener will pass through those holes and clamp the plates firmly together
- the bolt 79 which is also shown in Figure 12, has a head 80, shank 81, and tail 82
- the main thread 83 is a right-handed thread which has been rolled on to the full diameter of the shank of the bolt
- Extending from the main threaded portion is a short section of a second thread 84 which has a smaller diameter than the main thread This second and minor thread is a left-handed multi-start thread
- the fastening tool 89 comprises a handle 93, threaded socket 95 and a shaft 91 extending between the handle and socket
- the handle is designed as an L-shape for ease of holding and torquing
- the socket 95 carries a multi-start left-handed thread which mates with the minor thread 84 on the tip of the bolt
- the bolt 79 in Figure 10 carries a male left-hand thread to engage the socket on the tool whereas in Figure 2 the bolt 2 has a female left-hand thread This makes bolt 79 easier and cheaper to manufacture than bolt 2
- the tool 89 is constructed primarily from hexagonal section steel stock with a plastic handle 93 and internally threaded socket 95 attached
- a flattened section 110 is forged into the hex steel near the threaded socket
- the height of the flattened section 110 is the same as the major diameter of the hex bar from which it is formed, and the thickness of the flattened section is about one tenth of its height
- the flattened section 110 carries two N-shaped notches 114 and two rectangular notches 112 These serve as nesting places to locate the collar (as shown in Figure 10) so that the collar is more easily pushed through the hole by the tool
- the notches also allow the collar to be nested onto the tool with the collar's hinge aligned more parallel to the tool and thus allows the diameter of the collar to be increased for any given sized hole
- a disadvantage of thinning the metal of the tool in order to allow the collar to be folded over it, is that it means the tool in that region has a much reduced resistance to twisting This weakening effect is made worse by the relatively large notches 112 and 114 which remove further material
- This disadvantage has been limited by incorporating a sleeve 97 which is a sliding fit over the hex section and captive on the tool
- the sleeve 97 is shown in phantom to aid clarification When positioning the collar through the hole, the sleeve 97 is slid back towards the handle 93, but when it is necessary to apply more torque, such as when restraining a bolt from turning while its nut is being tightened, the sleeve is slid down towards the socket end so that the sleeve spans the flattened section and engages the hex section at 116 and 118 which are just beyond each end of the thinned portion 110
- the tool 89 as described above is of mainly metal construction with a plastic handle It may also be constructed entirely from appropriately chosen engineering plastics material(s) This could provide substantial savings in manufacture
- the washer 101 has a boss 103 extending from the face 104 in contact with the steel plate 72
- the outside diameter of the boss is slightly smaller than the diameter of the hole 75, so the boss fits neatly into the entry of hole 75 and thus serves to positively locate the position of the bolt central to the hole in the same manner as the collar 86 and the washer 46 act as shown in Figure 8.
- Figure 10 shows no sleeve equivalent to sleeve 19 in Figure 6, but it will be understood that such a sleeve may be optionally fitted, and is in fact preferred for joins under high shear loading.
- the collar is manufactured from a washer the same as that described with reference to Figure 13.
- a wide but shallow annular channel 120 is machined into the face 122 and this is filled with an elastomeric material.
- Many elastomers are suitable, the main requirement being the need to adhere to steel and have good elastic properties.
- a conventional silicone rubber sealant material is satisfactory.
- On the opposite face of the collar a boss 124 is raised and this again is to locate into the entry of the hole 76 in order to correctly centre the bolt in the hole. Cut diametrically into the collar from the boss side is a slot 126 of about lmm width.
- the slot passes almost completely through the collar, penetrating through the bottom of channel 120 but stopping approximately 0.3mm short of reaching the face 122 at the bottom of the slot.
- Slight flats 128 can be seen on the periphery of the collar and these are used as a positive retaining means while their slot is being machined.
- the above described configuration allows the elastomer in the hinge area to be kept stress free during transport and shipping of the components and it is only when the collar is to be used that the elastomer is caused to flex, so minimising the possibility of premature or unexpected elastomer failure.
- some of the faces of the collar 121 and washer 101 may be roughened in some manner to increase friction between facing steel surfaces and therefore reduce the tendency of the fastener to spin as the nut is tightened.
- the faces to be roughened are flat faces 122 and 123 on the collar 121 and face 104 on the washer 101.
- face 105 on the washer should be kept smooth in order to reduce friction between the nut 99 and the washer. Suitable roughening may be achieved by use of knurling, embossing or grooving techniques,
- the embodiment of the collar shown in Figure 16 is the same as that shown in Figure 15 except that instead of the wide channel filled with elastomer as a full circle, a pair of flat bottomed recesses machined into the face 122 are filled with elastomer and the component activated in the same way by snapping a thin web of metal.
- the bolt 160 of this embodiment has a shank 161 with, at one end, a head 162 and, at the other end a tail 163 which has a thread 164 to suit an appropriate nut (not shown).
- the bolt is divided radially into three segments 167, 168 and 169 of equal size.
- each of the segments By means of a thin rod or wire attached to the tail end of each of the segments the segments may be pushed, head end first, and one at a time, completely through the required hole, leaving only the attached rods in the hole. After the third segment is pushed through, the three rods may be simply manipulated in order to correctly align them with each other before pulling the tail ends of the segments together back through the hole. A washer and nut may be fed over the rods to engage and tighten upon the thread running around the perimeter of the three segments.
- the segments 167, 168 and 169 of the bolt may be made from three identical forgings which are then brought together in the required relationship for the thread to be cut or rolled thereon. It will be appreciated that the segments thus form a mating trio whose relative positions should be maintained at installation in order for the threads to properly align.
- the segments of each bolt would be sold as a matched set and provision needs to be made for their correct relative positions to be determined at the time of installation. This could be by way of each of the three rods having a different cross section and then having a gauge or template by which the position of the different rod cross sections may be determined.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU63200/99A AU766347B2 (en) | 1998-09-25 | 1999-09-27 | Blind bolting |
EP99950394A EP1131563A1 (en) | 1998-09-25 | 1999-09-27 | Blind bolting |
NZ511290A NZ511290A (en) | 1998-09-25 | 1999-09-27 | Blind bolting |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPP6183A AUPP618398A0 (en) | 1998-09-25 | 1998-09-25 | Threaded fasteners |
AUPP6183 | 1998-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000019113A1 true WO2000019113A1 (en) | 2000-04-06 |
Family
ID=3810401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1999/000825 WO2000019113A1 (en) | 1998-09-25 | 1999-09-27 | Blind bolting |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1131563A1 (en) |
AU (1) | AUPP618398A0 (en) |
NZ (1) | NZ511290A (en) |
WO (1) | WO2000019113A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1880800A1 (en) * | 2006-07-17 | 2008-01-23 | GEF Holdings Pty. Ltd. | Threaded fastener and method of installation |
US7373709B2 (en) * | 2006-07-17 | 2008-05-20 | Gef Holdings Pty Ltd. | Method of installing a blind threaded fastener |
US9145908B2 (en) | 2011-12-16 | 2015-09-29 | Ev Ip Lp | Blind fastener |
CN106704343A (en) * | 2017-01-17 | 2017-05-24 | 哈尔滨工业大学深圳研究生院 | Foldable gasket for single-side bolt, single-side bolt and installing device |
US9694478B1 (en) | 2014-05-19 | 2017-07-04 | Allfasteners USA, LLC | Blind bolt and tool combination |
KR101828848B1 (en) * | 2016-03-30 | 2018-03-29 | 오석환 | Method of connecting and reinforcing steel pipes and fastener used therein |
KR101869860B1 (en) * | 2017-08-22 | 2018-06-21 | 황성규 | Fastening tool of the bolt unit with folding washer |
KR101895998B1 (en) * | 2018-06-14 | 2018-09-06 | 권순철 | A fastening tool of the one-way bolt unit |
WO2018174480A1 (en) * | 2017-03-20 | 2018-09-27 | 황성규 | Folded washer, one-way bolt, and dedicated one-way bolt fastening tool for fastening folded washer and one-way bolt to member to be fastened |
CN111550482A (en) * | 2019-12-26 | 2020-08-18 | 兰州空间技术物理研究所 | Cam type locking and unlocking device |
CN111853024A (en) * | 2019-04-29 | 2020-10-30 | 宁波欣阳伟业进出口有限公司 | Unilateral bolt |
CN111853038A (en) * | 2019-04-29 | 2020-10-30 | 宁波欣阳伟业进出口有限公司 | Two-piece type foldable gasket |
CN114060378A (en) * | 2021-11-08 | 2022-02-18 | 中国一冶集团有限公司 | Embedded installation structure and installation method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111015566B (en) * | 2019-11-27 | 2020-11-27 | 同济大学 | Plate-shaped bending type split unilateral bolt fastener mounting tool |
EP4019788A1 (en) | 2020-12-22 | 2022-06-29 | Wunder Hexicon S.L. | Blind fastening washer, blind fastening system and methods for connecting two parts using said blind fastening system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2043861A (en) * | 1935-06-17 | 1936-06-09 | Oliver L Neal | Patch bolt |
SU1143898A1 (en) * | 1982-04-19 | 1985-03-07 | Всесоюзный научно-исследовательский проектно-конструкторский институт прикладной биохимии | Device for joining components with one-side access |
US5061134A (en) * | 1990-06-27 | 1991-10-29 | Oh Jung H | Divided bolt fastening device |
SU1719730A2 (en) * | 1990-06-01 | 1992-03-15 | Ю.М.Комаревский | Threaded joint |
JPH09317739A (en) * | 1996-05-31 | 1997-12-09 | Haujingu Tamura:Kk | One-sided bolt |
-
1998
- 1998-09-25 AU AUPP6183A patent/AUPP618398A0/en not_active Abandoned
-
1999
- 1999-09-27 WO PCT/AU1999/000825 patent/WO2000019113A1/en active IP Right Grant
- 1999-09-27 NZ NZ511290A patent/NZ511290A/en not_active IP Right Cessation
- 1999-09-27 EP EP99950394A patent/EP1131563A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2043861A (en) * | 1935-06-17 | 1936-06-09 | Oliver L Neal | Patch bolt |
SU1143898A1 (en) * | 1982-04-19 | 1985-03-07 | Всесоюзный научно-исследовательский проектно-конструкторский институт прикладной биохимии | Device for joining components with one-side access |
SU1719730A2 (en) * | 1990-06-01 | 1992-03-15 | Ю.М.Комаревский | Threaded joint |
US5061134A (en) * | 1990-06-27 | 1991-10-29 | Oh Jung H | Divided bolt fastening device |
JPH09317739A (en) * | 1996-05-31 | 1997-12-09 | Haujingu Tamura:Kk | One-sided bolt |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Derwent World Patents Index; Class Q61, AN 1985-241501/39 * |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373709B2 (en) * | 2006-07-17 | 2008-05-20 | Gef Holdings Pty Ltd. | Method of installing a blind threaded fastener |
EP1880800A1 (en) * | 2006-07-17 | 2008-01-23 | GEF Holdings Pty. Ltd. | Threaded fastener and method of installation |
US9145908B2 (en) | 2011-12-16 | 2015-09-29 | Ev Ip Lp | Blind fastener |
US11053968B1 (en) | 2014-05-19 | 2021-07-06 | Allfasteners USA, LLC | Blind bolt |
US9694478B1 (en) | 2014-05-19 | 2017-07-04 | Allfasteners USA, LLC | Blind bolt and tool combination |
US10018212B1 (en) | 2014-05-19 | 2018-07-10 | Allfasteners USA, LLC | Blind bolt and tool combination |
KR101828848B1 (en) * | 2016-03-30 | 2018-03-29 | 오석환 | Method of connecting and reinforcing steel pipes and fastener used therein |
CN106704343A (en) * | 2017-01-17 | 2017-05-24 | 哈尔滨工业大学深圳研究生院 | Foldable gasket for single-side bolt, single-side bolt and installing device |
WO2018174480A1 (en) * | 2017-03-20 | 2018-09-27 | 황성규 | Folded washer, one-way bolt, and dedicated one-way bolt fastening tool for fastening folded washer and one-way bolt to member to be fastened |
CN108626236A (en) * | 2017-03-20 | 2018-10-09 | 黄星奎 | Fold washer, one-way bolt and one-way bolt combination specific purpose tool |
KR101869860B1 (en) * | 2017-08-22 | 2018-06-21 | 황성규 | Fastening tool of the bolt unit with folding washer |
KR101895998B1 (en) * | 2018-06-14 | 2018-09-06 | 권순철 | A fastening tool of the one-way bolt unit |
CN111853024A (en) * | 2019-04-29 | 2020-10-30 | 宁波欣阳伟业进出口有限公司 | Unilateral bolt |
CN111853038A (en) * | 2019-04-29 | 2020-10-30 | 宁波欣阳伟业进出口有限公司 | Two-piece type foldable gasket |
CN111550482A (en) * | 2019-12-26 | 2020-08-18 | 兰州空间技术物理研究所 | Cam type locking and unlocking device |
CN111550482B (en) * | 2019-12-26 | 2022-01-21 | 兰州空间技术物理研究所 | Cam type locking and unlocking device |
CN114060378A (en) * | 2021-11-08 | 2022-02-18 | 中国一冶集团有限公司 | Embedded installation structure and installation method |
CN114060378B (en) * | 2021-11-08 | 2023-10-24 | 中国一冶集团有限公司 | Pre-buried mounting structure and mounting method |
Also Published As
Publication number | Publication date |
---|---|
AUPP618398A0 (en) | 1998-10-22 |
NZ511290A (en) | 2003-11-28 |
EP1131563A1 (en) | 2001-09-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1131563A1 (en) | Blind bolting | |
EP2275692B1 (en) | Method for using an expandable collet anchor system | |
AU2003278878B2 (en) | Tolerance compensating mounting device | |
US7717659B2 (en) | Zero-clearance bolted joint | |
US7373709B2 (en) | Method of installing a blind threaded fastener | |
US6698316B1 (en) | Asymmetrical fastening system | |
US7128511B2 (en) | Fastener | |
US20100143069A1 (en) | Friction mechanism | |
US6595734B2 (en) | Non-removable structural threaded fastener with threads of lesser outer diameter than the shank and method of forming same (div. 3) | |
EP2601419B1 (en) | Apparatus for tightening threaded fasteners | |
US20100247266A1 (en) | Self-locking nut | |
US20130164093A1 (en) | Fastener | |
US4661031A (en) | Fatigue resistant fastener assembly | |
EP1880800B1 (en) | Threaded fastener and method of installation | |
AU766347B2 (en) | Blind bolting | |
AU2008200632B2 (en) | Locking washer | |
WO2007086760A1 (en) | Friction mechanism | |
CA2552448C (en) | Improvements in relation to blind bolting | |
NZ551127A (en) | Helical fastener | |
AU4630389A (en) | Panel anchor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref country code: AU Ref document number: 1999 63200 Kind code of ref document: A Format of ref document f/p: F |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 63200/99 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1999950394 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 511290 Country of ref document: NZ |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1999950394 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999950394 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 63200/99 Country of ref document: AU |