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
  • 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
  • F16B19/1072—Blind rivets fastened by a pull - mandrel or the like the pull-mandrel or the like comprising a thread and being rotated with respect to the rivet, thereby mechanically expanding and fastening the rivet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J15/00—Riveting
  • B21J15/02—Riveting procedures
  • B21J15/04—Riveting hollow rivets mechanically
  • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
• • 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
  • F16B37/065—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut
  • F16B37/067—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut the material of the nut being deformed by a threaded member generating axial movement of the threaded part of the nut, e.g. blind rivet type
• • 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
  • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
  • F16B5/01—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening elements specially adapted for honeycomb panels
• • 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
  • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
  • Y10T29/4994—Radially expanding internal tube
• • 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
  • Y10T29/49947—Assembling or joining by applying separate fastener
  • Y10T29/49954—Fastener deformed after application
• • 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
  • Y10T29/49947—Assembling or joining by applying separate fastener
  • Y10T29/49954—Fastener deformed after application
  • Y10T29/49956—Riveting
• • 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
  • Y10T29/49947—Assembling or joining by applying separate fastener
  • Y10T29/49966—Assembling or joining by applying separate fastener with supplemental joining
• • 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
  • Y10T29/53—Means to assemble or disassemble
  • Y10T29/53478—Means to assemble or disassemble with magazine supply
  • Y10T29/53487—Assembling means comprising hand-manipulatable implement
  • Y10T29/53496—Assembling means comprising hand-manipulatable implement comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
• • 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
  • Y10T29/53—Means to assemble or disassemble
  • Y10T29/53709—Overedge assembling means
  • Y10T29/53717—Annular work
  • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
  • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
• • 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
  • Y10T29/53—Means to assemble or disassemble
  • Y10T29/53709—Overedge assembling means
  • Y10T29/53717—Annular work
  • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
  • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
  • Y10T29/53735—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter including near side fastener shaping tool

Definitions

• the invention relates to a method of crimping an insert to be crimped into a support using a fitting device having an anvil, in an area where the support comprises a first and a second superimposed panels and remotely each other, respectively comprising a first and a second passage opening, wherein the nut comprises a bearing head and a shaft subdivided into a first section disposed on the side of the support head and a second section of crimping of reduced section subdivided into a first segment, adjacent to the first section, delimiting a first bore having a first diameter and a second segment defining a second bore having a second diameter greater than the first diameter.
• An insert conventionally comprises a bearing head and a barrel often cylindrical.
• a problem arises when it is necessary to install such an insert in a hole made in a support, much more so in an area where the support comprises two overlapping panels and at a distance from one another.
• Such a support may for example be constituted by a sandwich structure composed of two plates containing a lower density material, or by two diametrically opposite walls of a tube.
• Each panel having a passage opening, known crimping processes cause almost systematic deterioration of the panels and the result has a low resistance to tearing. This problem is particularly important when the insert is constituted by a crimped nut to crimp.
• a crimped nut is a nut intended to be secured by deformation on a thin support.
• a crimped nut crushes into two distinct areas: the head and the barrel.
• the head which can take various forms, comes into contact, via its underside, with a support on which the nut is installed.
• the barrel is divided into two distinct sections: a threaded section and a crimping section.
• the threaded portion which is the functional part of the nut embedded after installation on the support, is arranged on the opposite side to the head and must be sufficiently strong to be able to undergo without deformation the axial forces applied to a standard screw introduced into the nut drowned.
• the crimping section which is located between the head and the threaded section, has the function of deforming under the action of an axial force of traction applied to the tapped thread of the threaded section.
• Such axial force can be transmitted, at the time of installation of the nut, by a pull rod of a laying apparatus further comprising an anvil forming an axial stop.
• the deformation generates a crimping bead that presses the support against the underside of the head thus ensuring its retention on the support.
• a first disadvantage lies in the fact that after the crimping operation, the threaded portion of the nut is completely outside the support, projecting from the latter.
• the object of the invention is to provide a method of crimping a crimping insert which increases the resistance to tearing while reducing the risk of damage to the support.
• the method according to the invention is remarkable in that it consists in: axially inserting the barrel into the support, on the side of the first panel, through the first and second passage openings, to a position of the insert where the distal end of the barrel opposite the head is flush with the second panel through the second opening, and bring the anvil against the distal end of the barrel, compress axially the second section against the anvil to fold the second segment on the second panel and create a bearing flange projecting radially from the barrel, continue the axial compression of the second section to create a crimping bead axially interposed between the first section and the second panel and defining, in combination with the support flange, an anchor groove framing the second panel at the periphery of the second opening, continuing the axial compression of the second section to bring into contact the bearing head against the first panel and create a clamping of the support between the support head and the support flange, together with a clamping of the second panel between the support flange and the crimping bead
• the first section After crimping, the first section is housed in the thickness of the support, so that the insert is integrally embedded in the support.
• the first section internally delimits a tapping so that the insert constitutes a crimped nut to be crimped, the entire crimped nut is integrally embedded in the support after crimping, even the threaded section.
• the shoulder constituted by the junction between the first and second bores determines the axial position of the anchor groove.
• the cooperation between the second panel and the barrel of the insert is practiced by clamping the second panel (at the periphery of the second opening) between the flanks of the anchor groove (formed on one side by the crimping bead and on the other side by the support flange), and no longer by a unidirectional axial compression as in the prior art.
• the combination of these two aspects results in a reduction in the risk of damage during crimping in the support.
• the crimping bead provides the same function of axial retention vis-à-vis the second panel that provided by the retaining head vis-à-vis the first panel.
• the axial loads applied to the insert are distributed over the two panels, especially if the screw is assembled in the opposite direction to the retaining head in the case where the insert is a nut. This results in a significant increase in the tear resistance of the insert relative to the support in which it is embedded after the crimping process according to the invention.
• the first step is performed by the following successive phases: the shaft is inserted axially into the support, on the side of the first panel, through at least the first passage opening, on the side of the second panel, axially inserting the pull rod in the drum to engage the threading of the rod in the tapping of the first section, the draw rod is screwed up to bring the anvil against the second panel into contact with the distal end of the barrel against the anvil.
• a variant of the method comprises an additional step in which the axial compression of the second section is continued in order to bring the support head and the support flange together and to create first and second depressions respectively in the first and second panels, resulting from local deformation of the first and second panels at the periphery of the first and second passage openings.
• the approximation of the support head and the support flange is controlled so that the bearing head is flush with the first panel on the periphery of the first depression, and / or that the support flush is flush with the second panel on the periphery of the second depression.
• FIG. 1 represents an example of a nut embedded image crimp according to a first aspect of the invention
• Figure 2 shows an example of a support used in an exemplary crimping method according to another aspect of the invention
• Figures 3 to 7 illustrate the various steps of the example crimping method
• - Figure 8 shows the support and the nut after the crimping process and after removal of the laying apparatus
• FIG. 9 represents another example of a support used in the exemplary crimping method
• FIG. 10 illustrates the support of FIG. 9 and the nut after the crimping process and after removal of the laying apparatus
• FIG. 11 shows another example of a support used in the exemplary crimping method
• FIG. 12 illustrates the support of FIG. 11 and the nut after the crimping process and after removal of the laying apparatus.
• Figure 1 illustrates a crimped crimped nut 10 which may be used in the crimping process of the invention and described later.
• an embedded crimped nut 10 comprises a bearing head 11 and a shaft 12.
• the head 11 is in the form of an annular flange.
• the shaft 12 has a cylindrical external shape and, as such, comprises an axis of revolution X. Thereafter, the terms “axially” and “axial” will refer to the axis X.
• the annular collar forms a shoulder with the outer face of the shank 12. The shoulder constitutes the active part of the support head 11, whose function is to participate in the tightening of the support during the crimping of the nut 10 and the retention of the nut 10 by the after.
• the shape of the support head 11 may, however, be any since these two functions are fulfilled.
• the shaft 12 is axially subdivided into a first threaded section 13 for receiving the traction threaded rod 21 of a laying apparatus (see FIGS. 3 to 7) and a second crimping section 14 of reduced section.
• the thickness of the wall constituting the crimping section 14 is smaller than that of the threaded section 13, so as to allow the deformation of the material constituting the wall of the crimping section 14 by application an axial compression force to the crimping portion 14.
• the first threaded portion 13, internally defining a tapping 15, is disposed on the side of the bearing head 11.
• the tapping 15 constitutes the active part of the nut 10 after crimping having the role of undergoing without deformation the axial forces applied to a standard screw (not shown) introduced into the nut 10 by screwing into the thread 15.
• the second crimping section 14 is subdivided into a first segment 141, adjacent to the first section 13, delimiting a first bore having a first diameter and a second segment 142 delimiting a second bore having a second diameter greater than the first diameter.
• the height of the second segment 142, counted along the X axis, is significantly lower than that of the first segment 141, for example of the order of six times less.
• the crimping method according to the invention is intended to install a crimp insert in a support 16, in an area where the support 16 comprises first and second panels 17, 18 superimposed and remotely one of the other.
• An example of such a support 16 is illustrated in FIG. 2, in which the panels 17, 18 form the two plates of a sandwich structure enclosing a material 19 of lower density in the volume delimited between the two panels 17, 18.
• each panel 17, 18 is constituted by an aluminum plate and the lower density material 19 is constituted by a cellular foam of aluminum.
• the insert is constituted by a crimped-in nut of the type shown in FIG.
• the panels 17, 18 respectively comprise a first and a second passage opening 171, 181 of the barrel 12 of the insert.
• the material 19 comprises a cylindrical orifice connecting the passage openings 171, 181.
• the example of crimping method illustrated in FIGS. 3 to 7 is carried out using a laying apparatus comprising a an anvil 20 extended by a threaded traction rod 21.
• the threaded traction rod 21 thus comprises an external thread having a pitch and a nominal diameter corresponding to those of the tapping 15.
• the illustrated example of crimping method consists, in a first step, in axially inserting the barrel 12 into the support 16, on the side of the first panel 17, through at least the first passage opening 171, then to axially inserting the side of the second panel 18, the threaded pull rod 21 in the barrel 12 to engage the threading of the rod 21 in the thread 15 of the first section 13, then to screw the pull rod 21 to put in contact the anvil 20 against the second panel 18, and the distal end of the barrel 12 against the anvil 20 (see Figures 3 and 4).
• the distal end of the barrel 12 corresponds to the end of the barrel 12 opposite to the bearing head 11.
• the barrel 12 is inserted axially into the support 16, on the side of the first panel 17, through the first and second through openings 171, 181, to a position of the insert 10 where the the distal end of the barrel 12 opposite the head 11 is flush with the second panel 18 through the second opening 181, and the anvil 20 is brought against the distal end of the barrel 12.
• the laying apparatus applies a traction movement to the rod 21 so as to axially compress the second section 14 against the anvil 20. These efforts compression force the constituent material of the second section 14 to deform. At the beginning of the compression, only the material at the second segment 142 is deformed against the anvil 20 to fold the second segment 142 on the second panel 18 and create a bearing flange 22 projecting radially from the barrel 12 ( Figure 5).
• the laying apparatus continues to apply to the second crimping section 14 tensile compression forces of the rod 21.
• the rod 21 continues the axial compression of the second section 14. to create a crimping bead 23 obtained by deformation of the first segment 141.
• the crimping bead 23 is axially interposed between the first section 13 and the second panel 18. It defines, in combination with the rim d 22, an anchor groove 24 which frames the second panel 18 at the periphery of the second opening 181.
• the retention provided by the support of the flange 22 against the second panel 18 has the effect of directing centrifugal deformation of the first segment 141 to the outside of the barrel 12 to ensure the formation of the crimping bead 23 outside.
• the anchor groove 24 is open on the outside of the barrel 12.
• the laying apparatus continues to apply to the second crimping section 14 tensile compression forces of the rod 21.
• the rod 21 continues the axial compression of the second section 14 to bring the bearing head 11 into contact with the first panel 17 and to create a clamping of the support 16 between the support head 11 and the support flange 22, together with a tightening of the second panel 18 between the support flange 22 and the crimping bead 23.
• the first threaded portion 13 is housed in the thickness of the support 16, so that the nut 10 is integrally embedded in the support 16.
• the crimping bead 23 provides the same function of axial retention vis-à-vis the second panel 18 than that provided by the retaining head 11 vis-à-vis the first panel 17.
• the axial loads applied to the nut 10 thereafter are distributed over the two panels 17, 18, especially if the standard screw (not shown) is assembled in the opposite direction to the retaining head 11. This results in a significant increase in the resistance to tearing of the nut 10 relative to the support 16 in which it is drowned after the crimping process above.
• the rod 21 continues the axial compression of the second section 14 to axially bring the support head 11 and the support flange 22 between them. It then results from this approximation the creation of a first and a second depressions 172, 182 respectively in the first and second panels 17, 18.
• the depressions 172, 182 are the consequence of a local deformation of the first and second panels 17, 18 at the periphery of the first and second passage openings 171, 181.
• the approaching of the bearing head 11 and the support flange 22 is controlled so that the bearing head 11 is flush with the first panel 17 at the periphery of the first depression 172. It it is also possible to provide that, in the additional step, the approach of the support head 11 and the support flange 22 is controlled so that the support flange 22 is flush with the second panel 18 at the periphery of the second depression 182.
• the crimping method according to the invention can be carried out without such a laying apparatus. It is indeed possible to perform the axial compression using a press.
• the anvil 20 may, for example, be constituted by the fixed part of the press while its part mobile bears on the support head 11 opposite the shoulder formed between the head 11 and the shaft 12.
• FIG. 8 illustrates that the nut 10 is crimped in the support 16 in a configuration where it is integrally embedded in the thickness of the support 16.
• the shoulder constituted by the junction between the first and second bores of the first and second segments 141, 142 has the effect of directing radially outwardly of the barrel 12 the constituent material of the second segment 142 during its deformation. This results in the guarantee that the support rim 22 is formed radially projecting from the shank 12.
• Such a support flange 22 has the effect, in the following of the axial compression of the second section 14, of preventing the constituent material the first segment 141 to deform concentrically towards the axis of revolution X of the shaft 12.
• the retention provided by the support of the flange 22 against the second panel 18 has the effect of centrifugally directing the deformation of the first segment 141 to the outside of the barrel 12 to ensure the formation of the crimping bead 23. If such a shoulder did not exist, no support flange 22 would be formed and the crimping bead 23 would be formed at outside the support 16, under the second panel 18. It follows from the foregoing that the crimping method described above can be adapted to any type of support 16, since it comprises two panels 17, 18 superimposed and at a distance from one another.
• FIGS. 9 and 10 illustrate that the exemplary crimping method according to the invention can be realized with a support 16 different: the panels 17, 18 superimposed and at a distance from each other are constituted by two diametrically opposite walls of a tube.
• the support 16 is constituted by the tube.
• the anchoring groove 24 creates (FIG. 10) a tightening of one of the walls of the tube, while the head 11 and the flange 22 create a clamping of the two walls of the tube.
• the depressions 172, 182 are preformed (by any means known and adapted according to the material of the panels 17, 18) in the panels 17, 18 before starting the implementation the crimping method of the nut 10.
• This variant is used when one wants to overcome the additional step although the depressions 172, 182 are necessary to drown the flange 22 and / or the head 11.
• This variant also has the advantage of avoiding any risk of deterioration of one of the panels 17, 18 at the end of the process because the creation of the depressions 172, 182 by the nut 10 itself remains random.
• FIGS. 11 and 12 illustrate a tube identical to that of FIGS. 9 and 10 but including depressions 172, 182 preformed in the panels 17, 18 before the implementation of the crimping process, respectively before installation of the nut 10 and after the implementation of the crimping process.
• the crimping method according to the invention has just been described in application to an insert constituted by the crimped-in nut 10 of FIG. 1. However, it can be applied to any other insert having a support head. and a drum comprising a first section (not necessarily tapped) disposed on the side of the head and a second crimping section of reduced thickness subdivided into a first segment, adjacent to the first section, delimiting a first bore having a first diameter and a second segment defining a second bore having a second diameter greater than the first diameter.
• such an insert may consist of a spacer or a compression limiter.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Joining Of Building Structures In Genera (AREA)
• Insertion Pins And Rivets (AREA)
• Lining And Supports For Tunnels (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=39563567

Family Applications (1)

Country Status (4)

Families Citing this family (5)

Family Cites Families (11)

• 2007
  • 2007-12-04 FR FR0708448A patent/FR2924370B1/fr not_active Expired - Fee Related
• 2008
  • 2008-12-02 US US12/744,546 patent/US8402632B2/en not_active Expired - Fee Related
  • 2008-12-02 EP EP08872469A patent/EP2214849A2/de not_active Withdrawn
  • 2008-12-02 WO PCT/FR2008/001672 patent/WO2009101277A2/fr active Application Filing

Non-Patent Citations (1)

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