GB2446815A - Blind stud insert - Google Patents

Blind stud insert Download PDF

Info

Publication number
GB2446815A
GB2446815A GB0625438A GB0625438A GB2446815A GB 2446815 A GB2446815 A GB 2446815A GB 0625438 A GB0625438 A GB 0625438A GB 0625438 A GB0625438 A GB 0625438A GB 2446815 A GB2446815 A GB 2446815A
Authority
GB
United Kingdom
Prior art keywords
insert
section
anchor stud
elongate portion
stud
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.)
Granted
Application number
GB0625438A
Other versions
GB2446815C (en
GB2446815B (en
GB0625438D0 (en
Inventor
Derek Crutchley
Philip Wasmuth
Jonathan Lee Brewer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avdel UK Ltd
Original Assignee
Avdel UK Ltd
Textron Fastening Systems Ltd
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 Avdel UK Ltd, Textron Fastening Systems Ltd filed Critical Avdel UK Ltd
Priority to GB0625438A priority Critical patent/GB2446815C/en
Publication of GB0625438D0 publication Critical patent/GB0625438D0/en
Priority to CN200780047696.1A priority patent/CN101568734B/en
Priority to US12/517,687 priority patent/US8444356B2/en
Priority to ES07824507T priority patent/ES2391660T3/en
Priority to JP2009542178A priority patent/JP5219095B2/en
Priority to PCT/GB2007/004275 priority patent/WO2008074974A1/en
Priority to EP07824507A priority patent/EP2092203B1/en
Priority to TW096143516A priority patent/TW200835861A/en
Publication of GB2446815A publication Critical patent/GB2446815A/en
Application granted granted Critical
Publication of GB2446815B publication Critical patent/GB2446815B/en
Publication of GB2446815C publication Critical patent/GB2446815C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
    • F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
    • 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
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets
    • F16B19/1045—Blind rivets fastened by a pull - mandrel 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
    • 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
    • F16B35/048—Specially-shaped necks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming

Abstract

An insert for blind installation in a workpiece, comprises a body and anchor stud. The stud is inserted into a through bore in the body, part of the stud extending beyond the end of the through bore. A part of the stud is provided with opposed areas of knurling such as threading, and is enveloped by a reduced diameter section of the body, such that crimping the stud onto the body causes material to enter the knurling, thereby firmly attaching body and stud allowing the insert to withstand high torque.

Description

1!ND STUD INSERT This invention relates to blind stud inserts and
particularly to the manufacture and assembly of an insert body and an anchor stud.
The invention relates to a method of manufacturing a blind stud insert from metal, which insert can be inserted through a workpiece and radially expanded to secure it to the workpiece. In this context, "blind" means that the insert can be installed by access to one side only of the workpiece.
It is known to provide a threaded insert body which is screwed then staked onto an anchor stud. However, the production and assembly of this type of insert involves many steps, including heat treatment of the anchor stud, roll tapping, washing and spinning of the body onto the anchor stud, and staking of the body onto the anchor stud. The heat treatment of the anchor stud must render the threaded shank sufficiently hard to enable it to withstand the force of the staking stage.
The rate of assembly of the above inserts is limited by the time-consuming processes of roll-tapping and of spinning of the body onto the anchor stud, with the time taken for this latter process increasing with the length of the anchor stud. A problem may also occur with cross threading between the body and the anchor stud threads, thus further increasing assembly time.
It is also known to provide an unthreaded body, which is staked directly onto the anchor stud.
Although this embodiment does not suffer from the disadvantage of time-consuming spin-on, it has been found that stud retention is poor as the grip between the body and the threaded shank of the anchor stud is insufficient.
Another prior art insert, as disclosed in EP1598567 (Bôllhoff) involves crimping an unthreaded body onto an anchor stud which is provided with longitudinal grooves superimposed over a helical thread form. This design compromises the torsional strength of the threaded shank of the anchor stud in the grooved region. The effective area of interlocking between the grooved thread crests of the anchor stud and the displaced material of the body is relatively small and consequently problems of adhesion between the body and anchor stud could still occur with this embodiment.
When a high torque is applied to the insert, it is possible that the body and anchor stud can become separated. High torque could be applied, for example, on installation of the fastener, or when cross-threading occurs between the nut being assembled and the installed anchor stud to form the final joint and as a result the stud unscrews from the body. It is also possible that the body and anchor stud can become separated as a result of axial forces applied to the workpiece into which the insert has been installed.
The final joint may need to be undone and re-assembled in-service. Removal and re-tightening of the nut, especially if corroded, will apply torque loads to the stud in both directions of rotation and may also cause separation of the stud with the body.
After installation of an insert, it may become necessary to remove it from the workpiece into which it has been installed, for example for disassembly of the workpiece for end-of-life recycling.
Inserts must therefore also be able to withstand the axial force necessary to force the insert out of a workpiece in either direction, without the anchor stud and body becoming separated.
It is an aim of the present invention to overcome or at least mitigate the aforementioned problems.
Accordingly the present invention provides, in one aspect, an insert as claimed in Claim 1 of the appended claims.
An advantage of the present invention is that during the crimping stage of the assembly of the insert, material is caused to enter the interstices of the anchor stud knurling, thus firmly holding the body onto the anchor stud. Therefore the insert can withstand the application of torque without allowing the anchor stud to become separated form the body. The provision of two areas of opposing angled knurling enables the insert to cope with such torque in either direction. The application of torque has no net effect in terms of generating axial movement in either direction even when the frictional force has been overcome. If two areas of knurling were provided with like angling, the effect would be similar to that of a steep helix or helical thread, i.e. the application of torque would produce a tendency for axial movement in one direction once the frictional forces had been overcome.
Preferably the insert is provided with one or more annular grooves in the first section of the anchor stud, i.e. the section which is enveloped by the reduced diameter section of the body. More preferably, an annular groove is provided between the two knurled areas. An advantage of providing annular grooves is that during the crimping stage of the assembly of the insert, material from the body is also caused to flow into the annular grooves, thus acting to lock the body onto the head and resist axial forces applied to the insert, for example if it becomes necessary to remove the insert after installation.
Preferably, the anchor stud is made of dual-phase steel which has been work-hardened during cold forming and thread rolling operations, thus decreasing the cost and complexity of manufacture by eliminating the requirement for hardening and tempering of the stud. The use of dualphase steel also eliminates the potential for hydrogen embrittlement caused by the hardening, tempering, and surface finishing processes, whilst ensuring that the anchor stud is sufficiently hard to cope with the forces encountered on crimping the body onto the anchor stud.
In an alternative embodiment, the body 4 could be of a different external cross-sectional form, such as square or hexagonal, to be inserted into a correspondingly shaped workpiece aperture.
A body having a non-circular external cross-section would provide an advantage in terms of increased resistance to rotation of the body within the workpiece on application of torque to the stud.
The insert body could also be provided with exterior knurling, or underhead barbs on the body flange, which embed in the workpiece to increase resistance to rotation on application of torque.
The invention provides, in a second aspect, a method of manufacture of an insert involving steps according to Claim 8.
An advantage of the method of manufacture of an insert according to the present invention is that subsequent to the forming of the anchor stud and body, the assembly of these two components to form the insert involves only two stages, i.e. inserting the anchor stud into the body, and crimping the body onto the anchor stud. Thus assembly of the insert is simplified as compared with the prior art methods which involve screwing the anchor stud into a threaded body, and the potential mode of failure by unscrewing of the two components is eliminated. Furthermore, the resulting adhesion of the parts is sufficient to cope with subsequent application of torque to the insert, in either direction.
Therefore the likelihood of the insert body becoming separated from the anchor stud on application of high torque applied to the insert is significantly reduced.
A further advantage of crimping the body onto the anchor stud is that any corrosion-resistant plating or coating which has been applied to the body or anchor stud prior to assembly is not significantly affected.
The invention provides, in a further aspect, an insert as claimed in claim 9 of the appended claims.
An advantage of providing a threaded anchor stud wherein the threading extends into the first section of the stud, i.e. into the region onto which the body is subsequently crimped, is that the threading may act as an area of knurling, wherein body material will be forced into the threading on crimping as in the first embodiment.
Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings in which: Figure 1 is an elevation of an anchor stud in accordance with the present invention.
Figure 2 is an axial cross-section of the anchor stud of Figure 1 along the line 11-Il.
Figure 3 is a cross-section of an insert body in accordance with the present invention.
Figure 4 is an elevation of the anchor stud of Figure 1 inserted into the cross-sectional insert body of Figure 3.
Figure 5 is a schematic representation of the crimping of the cross-sectional insert body of Figure 3 onto the anchor stud of Figure 1.
Figure 6 is an elevation of an alternative embodiment of an anchor stud in accordance with the invention inserted into a cross-sectional insert body.
Referring to Figures 1 to 4, the insert 2 comprises a body 4 and a dual-phase steel anchor stud 6. The anchor stud 6 comprises an elongate section 8 having a radially extending head 10 at one end. The elongate section 8 is provided with a threaded portion 12, and two knurled areas 14 and 16 between the threaded portion 12 and the head 10. The knurled areas 14 and 16 are formed of a plurality of angled knurls 18, wherein the knurls 18 of the first knurled area 14 are in an opposing direction to the knurls 18 of the second knurled area 16. Each knurl 18 is formed of a triangular-shaped crest, as illustrated in Figure 2. Annular grooves 20 are provided on the anchor stud 6, between the head 10 and the first knurled area 14, between the first knurled area 14 and the second knurled area 16, and between the second knurled area 16 and the threaded portion 12.
The body 4 has a through bore 22 of circular cross-section extending throughout. The through bore 22 has a portion of reduced diameter 24 at one end of the body. The other end of the body is provided with a radially extending flange 26.
As shown in Figure 4, the first stage of assembly of the insert 2 is the insertion of the anchor stud 6 into the body 4, until the anchor stud head 10 abuts against surface of the body 4. Once the anchor stud 6 is fully inserted into the body 4, a first section 28 of the anchor stud, which includes the knurled areas 14 and 16, is enveloped by the portion of reduced diameter 24 of the body 4. The dimensions of the knurled areas 14 and 16 and the portion of reduced diameter 24 of the through bore 22 are such that a light interference fit is achieved between the anchor stud 6 and the body 4. A second section 30 of the anchor stud extends beyond the end of the body 4.
The next stage of assembly of the insert, as shown in Figure 5, is the crimping of the body 4 onto the anchor stud 6. Crimping is performed by a four jaw crimping head (not shown) acting at four equally spaced points around the exterior part of the body 4 corresponding approximately to the reduced diameter section 24 of the through bore 22. Two of these points are indicated by arrows X and Y. Crimping causes the material under each jaw to deform, i.e. to enter the annular grooves 20 and the interstices of the angled knurls 18. The crimp involves a high load which is applied over a relatively large area; the four crimp jaws act upon most of the circumference of the body.
The surfaces of the jaws of the crimping head which are forced onto the body 4 have a flat surface, thus allowing a small degree of flexibility in the placing of the insert within the crimping head.
Alternatively, the surfaces of the jaws could have a profile corresponding to that of the first section of the anchor stud 6. i.e. to aid the forcing of the body material into the knurl interstices and the annular grooves.
In a further alternative embodiment, the threaded portion 12 of the elongate section 8 of the anchor stud 6 could be extended into the reduced-diameter section 24 of the body 4 sufficiently that it can be used as a first area of knurling. The second area of knurling in this embodiment could comprise knurls at an opposing angle to the pitch of the thread. Figure 6 illustrates this embodiment prior to crimping of the insert body onto the anchor stud.

Claims (10)

  1. Claims 1 An insert for blind installation in a workpiece comprising a
    body and an anchor stud; the anchor stud having an elongate portion and a head portion located at or near one end of the elongate portion and extending radially therefrom; the anchor stud being insertable into a through bore extending throughout the interior of the body, such that when inserted, a first section of the elongate portion is enveloped by a reduced diameter section of the body, and a second section of the elongate portion, remote from the head, extends beyond an end of the through bore; wherein the first section of the elongate portion is provided with at least two areas of opposing angled knurling.
  2. 2. An insert as claimed in any of the preceding claims wherein the first section of the elongate portion is provided with at least one annular groove.
  3. 3. An insert as claimed in Claim 3 wherein an annular groove is provided between the two knurled areas.
  4. 4. An insert as claimed in any of the preceding claims wherein the anchor stud is made ol dual-phase steel.
  5. 5. An insert as claimed in any of the preceding claims wherein the insert body has a non-circular external cross-sectional form.
  6. 6. An insert as claimed in any of the preceding claims wherein the insert body is provided with external knurling.
  7. 7. An insert as claimed in any of the preceding claims wherein the insert body is provided with underheacj barbs.
  8. 8. A method of manufacture of an insert, which method comprises steps of: forming an anchor stud and a body, inserting the anchor stud into an unthreaded through bore provided in a body, such that areas of opposing angled knuris provided on the anchor stud are enveloped by part of the body; and crimping the part of the body enveloping the knurled areas of the anchor stud such that material of the body is forced into the interstices of the knuris.
  9. 9. An insert for blind installation in a workpiece comprising a body and an anchor stud; the anchor stud having an elongate portion and a head located at or near one end of the elongate portion and extending radially therefrom; the anchor stud being insertable into a through bore extending throughout the interior of the body, such that the elongate portion has a first section which is enveloped by a reduced diameter section of the body, and a second section, remote from the head, which extends beyond an end of the through bore; wherein the elongate portion is provided with threading extending from part of the first section to at least part of the second section, whereby the threading extending into the second section acts as a first area of knurling, and wherein the first portion is provided with at least a second area of knurling at an Opposing I...
    angle to the pitch of the threading. * * I...
    *
  10. 10. An insert substantially as described herein and with reference to the accompanying drawings. ** * * S * S *S **** * * S...
    9. An insert for blind nstallation in a workpiece comprising a body and an anchor stud; the anchor stud having an elongate portion and a head portion located at or near one end of the elongate portion and extending radially therefrom; the anchor stud being insertable into a through bore extending throughout the interior of the body, such that the elongate portion has a first section which is enveloped by a reduced diameter section of the body, and a second section, remote from the head, which extends beyond an end of the through bore; wherein the elongate portion is provided with threading extending from part of the first section to at least part of the second section, and wherein the first portion is provided with an area of knurling at an opposing angle to the pitch of the threading.
    10. An insert substantiaHy as described herein and with reference to the accompanying drawings.
    Amendments To The Claims Have Been Filed As Follows 1. An insert for blind installation in a workpiece comprising a body and an anchor stud: the anchor stud having an elongate portion and a head located at or near one end of the elongate portion and extending radially therefrom; the anchor stud being insertable into a through bore extending throughout the interior :. of the body, such that when inserted, a first section of the elongate portion is enveloped by a reduced diameter section of the body, and a second section of the elongate portion, remote from the head, extends beyond an end of the through bore; S... * . *..
    S
    S.....
    * S wherein the first section of the elongate portion is provided with at least two areas *. of opposing angled knurling. * * *.*.
    2. An insert as claimed in claim4 wherein the first section of the elongate portion is provided with at least one annular groove.
    3. An insert as claimed in any of the preceding claims wherein an annular groove is provided between the two knurled areas.
    4. An insert as claimed in any of the preceding claims wherein the anchor stud is made of dual-phase steel.
    5. An insert as claimed in any of the preceding claims wherein the insert body has a non-circular external cross-sectional form.
    6. An insert as claimed in any of the preceding claims wherein the insert body is provided with external knurling.
    7. An insert as claimed in any of the preceding claims wherein the insert body is provided with underhead barbs.
    8. A method of manufacture of an insert, which method comprises steps of: forming an anchor stud and a body, wherein the anchor stud is formed with an elongate portion and a head located at or near one end of the elongate portion and S...
    extending radially therefrom; inserting the anchor stud into an unthreaded through bore extending throughout the body, such that areas of opposing angled knurls provided on a first section of the : elongate portion are enveloped by a reduced diameter section of the body, and a 4S. second section of the elongate portion, remote from the head, extends beyond an S...
    end of the through bore; and crimping the reduced diameter section of the body enveloping the knurled areas of the anchor stud such that material of the body is forced into the interstices of the knurls.
GB0625438A 2006-12-20 2006-12-20 Blind stud insert. Expired - Fee Related GB2446815C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB0625438A GB2446815C (en) 2006-12-20 2006-12-20 Blind stud insert.
EP07824507A EP2092203B1 (en) 2006-12-20 2007-11-09 Blind stud insert
US12/517,687 US8444356B2 (en) 2006-12-20 2007-11-09 Blind stud insert
ES07824507T ES2391660T3 (en) 2006-12-20 2007-11-09 Blind type insert for a bolt
JP2009542178A JP5219095B2 (en) 2006-12-20 2007-11-09 Insert and insert manufacturing method
PCT/GB2007/004275 WO2008074974A1 (en) 2006-12-20 2007-11-09 Blind stud insert
CN200780047696.1A CN101568734B (en) 2006-12-20 2007-11-09 Blind stud insert
TW096143516A TW200835861A (en) 2006-12-20 2007-11-16 Blind stud insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0625438A GB2446815C (en) 2006-12-20 2006-12-20 Blind stud insert.

Publications (4)

Publication Number Publication Date
GB0625438D0 GB0625438D0 (en) 2007-01-31
GB2446815A true GB2446815A (en) 2008-08-27
GB2446815B GB2446815B (en) 2009-02-25
GB2446815C GB2446815C (en) 2012-10-03

Family

ID=37734540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0625438A Expired - Fee Related GB2446815C (en) 2006-12-20 2006-12-20 Blind stud insert.

Country Status (8)

Country Link
US (1) US8444356B2 (en)
EP (1) EP2092203B1 (en)
JP (1) JP5219095B2 (en)
CN (1) CN101568734B (en)
ES (1) ES2391660T3 (en)
GB (1) GB2446815C (en)
TW (1) TW200835861A (en)
WO (1) WO2008074974A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122224A (en) * 2016-08-23 2016-11-16 无锡市东赫金属制品有限公司 A kind of bolt of easy twisting

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010007769U1 (en) * 2010-06-09 2010-08-19 Acument Gmbh & Co. Ohg Electrically conductive screw connection and special screw for such a screw connection
TWI428519B (en) * 2011-08-03 2014-03-01 Wistron Corp Nut, nut-and-shell assembly and method for assembling nut-and-shell assembly
US10087969B2 (en) 2013-05-02 2018-10-02 Ornit Agriculture Industry Business And Management Agricultural Cooperative Association Ltd. Blind rivet
JP5559926B1 (en) * 2013-12-09 2014-07-23 照国工業株式会社 Anchor member and manufacturing method thereof
EP2910801B1 (en) * 2014-02-24 2016-11-09 GESIPA Blindniettechnik GmbH Blind rivet fastener
MX2016014134A (en) * 2014-05-02 2017-02-02 Mcs Mfg Llc System for manufacturing a top mount.
CN104314940B (en) * 2014-09-01 2017-01-25 株洲南车时代电气股份有限公司 Fall-preventing connecting structure
DE102015113676A1 (en) * 2015-08-18 2017-02-23 Profil Verbindungstechnik Gmbh & Co. Kg Blindnietelement
EP3387270B1 (en) * 2015-12-09 2022-09-14 Bossard AG Fastening element
DE102016205155A1 (en) * 2016-03-29 2017-10-05 Audi Ag joint assembly
JP7429108B2 (en) 2019-10-31 2024-02-07 日東精工株式会社 Clinching stud fixing structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005560A1 (en) * 1985-03-11 1986-09-25 Allfast Fastening Systems, Inc. Blind rivet stems and method of manufacturing the same
EP1598567A1 (en) * 2004-05-19 2005-11-23 Bollhoff Otalu S.A. Method for assembling a press rivet and press rivet obtained by such a method

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US217692A (en) * 1879-07-22 Improvement in bolt-locks
US1346058A (en) * 1918-08-24 1920-07-06 Rorergel Gabriel Process for the manufacture of bolts
US2019049A (en) * 1932-04-08 1935-10-29 Dardelet Threadlock Corp Fastening means
US2024071A (en) * 1932-07-28 1935-12-10 Minnie E Sharp Bolt
US2056688A (en) * 1934-11-15 1936-10-06 Lamson & Sessions Co Weather-tight bolt
US2405613A (en) * 1942-11-05 1946-08-13 Cherry Rivet Company Apparatus for setting blind rivets
US3252495A (en) * 1959-02-18 1966-05-24 Lamson & Sessions Co Bolt with a knurled barrel-shaped shank
US3198231A (en) * 1962-01-09 1965-08-03 South Chester Corp High strength threaded insert
US3270610A (en) * 1963-08-20 1966-09-06 United Carr Inc Sealed hollow fastener members
FR1422358A (en) * 1964-11-13 1965-12-24 Semt Process for making assemblies or fittings of at least two parts subjected to vibrations or the like
FR1541778A (en) * 1966-10-31 1968-10-11 Deutsch Fastener Corp Captive screw and its manufacturing process
US3727254A (en) * 1971-05-05 1973-04-17 Precision Screw & Mfg Method of forming an insert bush
US3897713A (en) * 1974-03-06 1975-08-05 Illinois Tool Works Double-ended stud
US4018132A (en) * 1974-06-18 1977-04-19 Tokai Cold Forming Co., Ltd. Connecting-rod bolt
GB1552002A (en) * 1975-07-14 1979-09-05 Yardley Prod Corp Metal insert adapted to be embedded in a cavity in a workpiece
US4621963A (en) * 1984-03-26 1986-11-11 Elco Industries, Inc. Fastener for roof assemblies and the like
GB2167148B (en) * 1984-11-15 1988-02-03 Psm Fasteners Ltd Inserts
US4827756A (en) * 1987-01-09 1989-05-09 Textron Inc. Fastener fabrication method
US4846611A (en) * 1988-02-24 1989-07-11 Huck Manufacturing Company Fastening system and fastener for shipping containers and the like
USD323287S (en) * 1988-05-31 1992-01-21 Engineered Inserts & Systems Inc. Insert for plastic molded parts
USD323288S (en) * 1988-05-31 1992-01-21 Engineered Inserts & Systems Inc. Insert for plastic molded parts
GB8818414D0 (en) * 1988-08-03 1988-09-07 Psm Int Plc Improvements to screw threaded fasteners
US4969785A (en) * 1989-11-01 1990-11-13 Textron, Inc. Fastener mandrel and method
US5096349A (en) * 1990-07-26 1992-03-17 Fatigue Technology, Inc. Nut mounting grommet
JP2517493B2 (en) * 1991-05-16 1996-07-24 永山電子工業株式会社 T-nut
GB9200849D0 (en) * 1992-01-15 1992-03-11 Psm International Plc Fastener sealing system
GB9203227D0 (en) * 1992-02-14 1992-04-01 Gec Avery Technology Improvements in or relating to force sensors
US5503596A (en) * 1993-05-14 1996-04-02 Nagayama Electronic Industry Co., Ltd. Method of manufacturing tee nuts
DE9320283U1 (en) * 1993-06-04 1994-05-19 Kellermann Fa Rudolf Press-fit connecting element, in particular wheel bolts
IL106817A0 (en) * 1993-08-27 1993-12-08 Ornit Blind rivet
US5618144A (en) * 1995-09-11 1997-04-08 Sigma Tool & Machine Tee-nut with enlarged barrel end
US6042314A (en) * 1996-09-17 2000-03-28 Windware Inc. Fastener and method of operation thereof for installing a thin layer of material at an adjustable distance from a support
US6095738A (en) * 1997-07-11 2000-08-01 Stafast Products, Inc. Tee nut and method of manufacture
JPH11270535A (en) * 1998-03-23 1999-10-05 Pop Rivet Fastener Kk Fastening tool
JP3288969B2 (en) * 1998-04-07 2002-06-04 光洋精工株式会社 Fastening structure
JP3310934B2 (en) * 1998-07-16 2002-08-05 永山電子工業株式会社 T nut
US6341917B1 (en) * 1998-12-30 2002-01-29 Emhart Inc. Double ended stud fastening system
DE19900791B4 (en) * 1999-01-12 2004-02-26 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Connecting element for two machine or components, in particular fitting expansion screw, fitting threaded bolt or the like.
USD442064S1 (en) * 1999-02-09 2001-05-15 Qingdao Gyoha Plastics Co., Ltd. Eyelet
US6079920A (en) * 1999-02-09 2000-06-27 Lucent Technologies Inc. Captive fastener
US6474918B1 (en) * 2000-06-30 2002-11-05 Ashton Plastic Products, Inc. Anti-cross threading device
DE10149017C2 (en) * 2001-10-04 2003-08-21 Kellermann Fa Rudolf Detachable fitting connection element for a component, with a fitting screw and a support ring
CN2521428Y (en) * 2001-12-31 2002-11-20 上海禧龙工程安装有限公司 Rock strata grouting bolt fastening
CA2433643A1 (en) * 2002-06-27 2003-12-27 Nagayama Electronic Industry Co., Ltd. T-nut
US6692207B1 (en) * 2002-09-05 2004-02-17 Yardley Products Corp. One-piece metallic threaded insert
DE10258149B4 (en) * 2002-12-10 2006-04-06 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Press-fit connection element and method for its production
JP4209264B2 (en) * 2003-06-09 2009-01-14 永山電子工業株式会社 CB hopper feed T nut
US7306418B2 (en) * 2004-09-27 2007-12-11 General Motors Corporation Deforming member and captive fastener retaining method
DE102005041350A1 (en) * 2005-08-31 2007-03-01 Ejot Gmbh & Co. Kg Female screw part for inserting into hole of plate, has flange of holt-melt adhesive, which is fused by rotational friction, where flange is provided at carrier surface of cone and carrier surface is turned toward plate
US7402016B2 (en) * 2005-12-02 2008-07-22 Simpson Strong-Tie Company, Inc. Variably threaded screw
US7938608B1 (en) * 2009-02-05 2011-05-10 Jordan Arthur L Wall surface protecting bolt support apparatus and method
CN201593547U (en) * 2009-11-16 2010-09-29 鸿富锦精密工业（深圳）有限公司 Connecting piece and electronic device casing with same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005560A1 (en) * 1985-03-11 1986-09-25 Allfast Fastening Systems, Inc. Blind rivet stems and method of manufacturing the same
EP1598567A1 (en) * 2004-05-19 2005-11-23 Bollhoff Otalu S.A. Method for assembling a press rivet and press rivet obtained by such a method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122224A (en) * 2016-08-23 2016-11-16 无锡市东赫金属制品有限公司 A kind of bolt of easy twisting

Also Published As

Publication number Publication date
US20100068002A1 (en) 2010-03-18
CN101568734B (en) 2014-07-30
ES2391660T3 (en) 2012-11-28
GB2446815C (en) 2012-10-03
GB2446815B (en) 2009-02-25
JP2010513816A (en) 2010-04-30
WO2008074974A1 (en) 2008-06-26
CN101568734A (en) 2009-10-28
GB0625438D0 (en) 2007-01-31
JP5219095B2 (en) 2013-06-26
US8444356B2 (en) 2013-05-21
EP2092203B1 (en) 2012-09-26
EP2092203A1 (en) 2009-08-26
TW200835861A (en) 2008-09-01

Similar Documents

Publication Publication Date Title
EP2092203B1 (en) Blind stud insert
US8381934B2 (en) Sealing plug for blind installation
US9157467B2 (en) Self-tapping screw and screwed fastening as well as blank for manufacturing the screw
JP2005207595A (en) Blind rivet nut
EP3074647B1 (en) Advanced nut and bolt
US11867212B2 (en) Deformable sleeve nut and a method of manufacturing
GB2491805A (en) Fastening Assembly
WO2010037411A1 (en) Fastening device
US8016534B2 (en) Fastener assembly and manufacturing method therefor
GB2146724A (en) Torque-limited screw-thread locking fastener
US20230112581A1 (en) Multi-piece fastener comprising a tapered threaded portion and method of fastening
KR102652336B1 (en) Fixing structure of Ball joint having screw combining type and Fixing method thereof
US11959504B2 (en) Self-forming thread blind fastener
US20220090622A1 (en) Fastener arrangement for establishing a screw connection
US20230250842A1 (en) Self-forming thread blind fastener
WO2020231416A1 (en) Blind fasteners and methods of fastening
MXPA03010067A (en) Locking thread cold forming tool.

Legal Events

Date Code Title Description
S27 Amendment of specification after grant (sect. 27/patents act 1977)

Free format text: APPLICATION FILED; APPLICATION TO AMEND SPECIFICATION UNDER SECTION 27 FILED ON 20 JANUARY 2012.

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST FOR OPPOSITION; CLAIMS PAGE 3 LINE 5 DELETE FIRST AFTER THE LINE 6 DELETE SECOND AFTER THE LINE 6 INSERT FIRST BEFORE SECTION LINE 7 DELETE SECOND AFTER THE LINE 7 INSERT FIRST BEFORE SECTION

Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 20 JANUARY 2012

S27 Amendment of specification after grant (sect. 27/patents act 1977)

Free format text: APPLICATION NOT PROCEEDED WITH; APPLICATION TO AMEND UNDER SECTION 27 FILED ON 20 JANUARY 2012 NOT PROCEEDED WITH ON 22 MARCH 2012

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: CORRECTIONS ALLOWED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 20 JANUARY 2012 ALLOWED ON 27 SEPTEMBER 2012

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20211220