Abstract: Disclosed is a blind fastener including a core bolt, a body and a blind side clamp on the core bolt insertable through an aperture, where moving the core bolt relative to the body forms an enlarged bearing surface against a back surface. The fastener includes an extension from the body with a wrenching surface and an undercut between the body and the wrenching surface that is optionally configured to break when torque equal to the sum of an application specified minimum installed seated torque and a manufacturing failure torque tolerance for the undercut is applied. Also disclosed is a method of dressing the installed fastener including machining through the top surface of the fastener along a longitudinal axis of the core bolt of the fastener and the extension that extends from a body of the fastener until intersecting the undercut between the extension to remove the extension.

Abstract: The invention relates to an attachment member (R) of the “lockbolt” type comprising a pin (100) and a ring (200), said pin (100) comprising a head (110) at one end and having, on its body, a first part (120) grooved with a plurality of locking grooves or channels (121p, 121c, 121d) enabling the ring (200) engaging with the pin (100) to attach itself thereto by deformation, and a second part (130) that is grooved in order to cooperate with a tool (O), characterized in that said grooved part (120) of the pin (100) is preformed so as to provide a series of non-helical grooves (121p, 121c, 121d), the beginning and the end of the series consisting of grooves (121p, 121d) that have different profiles from the identical grooves (121c) located in the central part of said series, the different profile having an identical depth but a greater width compared to the profile of the grooves (121c) located in the central portion of the series. The invention is applicable to the production of attachments and rivets.

Abstract: The invention relates to a device (D) for storing and dispensing parts (P) of the type that comprises a rigid parallelepiped container (100) receiving at least one winding of a flexible storage pipe (200), wherein at least one end (220) of said pipe (200) opens to the outside and said end (220) is provided with a dispensing head (300), while the other end (210) is supplied with movement fluid, characterized in that the pipe (200) used for storing the parts (P) is made of a polyether-based polyurethane of about 64 shore D.

Abstract: The invention relates to an attachment member (R) of the “lockbolt” type comprising a pin (100) and a ring (200), said pin (100) comprising a head (110) at one end and having, on its body, a first part (120) grooved with a plurality of locking grooves or channels (121p, 121c, 121d) enabling the ring (200) engaging with the pin (100) to attach itself thereto by deformation, and a second part (130) that is grooved in order to cooperate with a tool (O), characterised in that said grooved part (120) of the pin (100) is preformed so as to provide a series of non-helical grooves (121p, 121c, 121d), the beginning and the end of the series consisting of grooves (121p, 121d) that have different profiles from the identical grooves (121c) located in the central part of said series, the different profile having an identical depth but a greater width compared to the profile of the grooves (121c) located in the central portion of the series. The invention is applicable to the production of attachments and rivets.

Abstract: A method of operating with a rivet is for the coupling and the tack riveting together of a first element and a second element. The method comprises positioning the rivet such that the rivet traverses two substantially coaxial openings arranged in the first and second elements to be assembled; pulling the mandrel to form a bulb on the second end; and resuming pulling of the mandrel, to cause a rupture of the sleeve at the bulb so as to permit removal, by way of the external surface of the first element, of the mandrel and of a first portion of the sleeve as well as the falling away of the portion of the bulb remaining on the external surface of the second element.

Abstract: A fastener is configured to assemble parts of composite materials. The fastener includes a head; a sleeve including a first section including a first inner diameter, and a second section including a second inner diameter, the second inner diameter being less than the first inner diameter, the second section being between the first section and the head. The fastener also includes an insert inside the sleeve.

Abstract: The invention relates to a method for producing an attachment element (R) comprising a shaft (100) having a first end provided with a head (200) and a second end that is intended to be deformed in order to form a button (300) providing a bearing surface opposite the surface formed by the head (200), said shaft (100) having a nominal diameter (D). The method is characterised in that the element is sized such that the minimum length (L) of the shaft (100) to be deformed to form the button (300) is no less than 1.25 times the nominal diameter (D) of the shaft (100). The invention is suitable for use in the production of attachment elements, such as rivets.

Abstract: The invention relates to a method for assembling parts (P1 and P2) in composite hardware by means of a riveting member (R), and is notable in that it comprises: using a bushing (200), the hollow core (230) of which has two different sections (231 and 232); using an insert (100) having no functional axial bearing surface for the radial swelling of the bushing (200) in the through-hole (T), but the diameter (D3) of which is capable of enabling the housing thereof, with no change in shape, in the first section (231) of the hollow core (230), and is also capable of enabling the forcible housing thereof in the second section (232); axially feeding the insert (100) into the bushing (200) such that the latter radially swells inside the through-hole (T) up to the small section (232) thereof and such that the recess well-defined by said small section is occupied by said insert (100); and ensuring, by means of a rivet set (400), the pressure on the first section (231) of the bushing (200) by the end that changes shape

Abstract: The invention relates to a method for installing a rivet (R, R?, R?, R2) for the purpose of assembling at least two elements (300, 400) through which a hole passes, in which the rivet (R) is positioned in said hole and is of the type comprising a head (100) coming to rest on the edge of the hole and a tubular or semi-tubular rod (200) of which the free open end (220) is deformed, for the purpose of creating a bearing surface, in which a snap (B, B?) ensures the deformation of said free end (220) by bringing the snap (B, B?) toward the first tool, remarkable in that it consists of interposing a film (500, 600, 700) of material between the snap (B, B?) and the end to be deformed during installation. The invention also relates to a corresponding rivet and installation tool. Applications: rivet installation.

Abstract: Disclosed is blind rivet including a hollow sleeve, a crimping ring, and a mandrel, received by the hollow sleeve and by the crimping ring. The mandrel includes a head configured to bear against the sleeve, and a shank configured to receive a traction load from a tool. There is a breaking groove which breaks off when the traction load reaches a certain value. The breaking groove including a breaking groove bottom, a first breaking-groove-side extending from the breaking groove bottom toward the shank, a second breaking-groove-side extending from the breaking groove bottom towards the head. A first breaking-groove-side and a central axis of the mandrel define a first angle, and a second breaking-groove-side and the central axis define an angle greater than the first angle. An embrittlement groove is contiguous with the first breaking-groove-side.

Abstract: A method of operating with a rivet is for the coupling and the tack riveting together of a first element and a second element. The method comprises positioning the rivet such that the rivet traverses two substantially coaxial openings arranged in the first and second elements to be assembled; pulling the mandrel to form a bulb on the second end; and resuming pulling of the mandrel, to cause a rupture of the sleeve at the bulb so as to permit removal, by way of the external surface of the first element, of the mandrel and of a first portion of the sleeve as well as the falling away of the portion of the bulb remaining on the external surface of the second element.

Abstract: The invention relates to a method for assembling parts (P1 and P2) in composite hardware by means of a riveting member (R), and is notable in that it comprises: using a bushing (200), the hollow core (230) of which has two different sections (231 and 232); using an insert (100) having no functional axial bearing surface for the radial swelling of the bushing (200) in the through-hole (T), but the diameter (D3) of which is capable of enabling the housing thereof, with no change in shape, in the first section (231) of the hollow core (230), and is also capable of enabling the forcible housing thereof in the second section (232); axially feeding the insert (100) into the bushing (200) such that the latter radially swells inside the through-hole (T) up to the small section (232) thereof and such that the recess well-defined by said small section is occupied by said insert (100); and ensuring, by means of a rivet set (400), the pressure on the first section (231) of the bushing (200) by the end that changes shape

Abstract: The invention relates to a device (D) for storing and dispensing parts (P) of the type that comprises a rigid parallelepiped container (100) receiving at least one winding of a flexible storage pipe (200), wherein at least one end (220) of said pipe (200) opens to the outside and said end (220) is provided with a dispensing head (300), while the other end (210) is supplied with movement fluid, characterised in that the pipe (200) used for storing the parts (P) is made of a polyether-based polyurethane of about 64 shore D.

Abstract: The invention relates to a blind rivet (R) characterised in that it comprises a severing groove (130) shaped in such a way that the connection between the bottom of the groove and the outside diameter of the mandrel (100) increases more on the shank side than on the head side; a shank (120) provided with a plurality of preformed crimping grooves (140) and shaped in such a way that once the shank has been severed at the severing groove (130), part of the crimping grooves (140) extends beyond the sleeve (200); at least one weakening groove (150) on the shank; a crimping collar insert (400) is crimped into the crimping grooves (140) extending beyond the sleeve (200) using a tool (500) provided with a setting tip which can exert a pulling force on the mandrel (100) in order to bend the sleeve (200) and crimp the collar (400) on the mandrel (100). The invention is useful for attachment and riveting.

Abstract: The invention concerns a blind rivet (R) of the type consisting of a deformable bushing (300) and a cleavable mandrel (400), the thus formed assembly being urged to be positioned and pass through the orifices (110 and 120) made substantially coaxial and provided in at least two elements (100 and 200) to be assembled. Said rivet is characterized in that the bushing (300) consists of one single piece but preformed to have a second end (320) in two parts (330 and 340) which, under the action of an axial load (arrow F), are cleaved apart so that one part of the bushing (330) moved by the tensile load of the mandrel (400) is urged to be opened around the fixed part of the bushing (340), the expansion of the mobile part (330) called sleeve being produced without folding. The invention also concerns a method for inserting such a rivet. The invention is applicable to rivet fixing.

Abstract: The invention relates to a blind rivet (R) of the type which is used to position at least two elements (100 and 200) alongside one another and to fasten same and which is installed using an installation tool. The invention is characterised in that it comprises a bushing (300) which is made from one single piece and which is preformed from a single tapered part (330) that is located between the two support surfaces (311 and 321), with the elements to be assembled being defined initially or by means of deformation by the bushing. The invention also relates to a method of removing said rivet.

Abstract: The invention relates to a method for structural attachment using a blind rivet (R) including a rod (100) that, equipped with a head (110) and a threaded portion (120), is arranged inside a hollow dowel (200) including a first end equipped with a head (210) and a second end (220) on which a nut (330) cooperating with the threaded portion of the rod (100) exerts a force transmitted by the rod (100) so that a second bearing surface on the second element is created by deformation, which is remarkable in that it consists of imparting a first translation movement (arrow F1) on the rod (100) so as to create, by deformation under the action of said nut, said second bearing surface, then imparting a second rotation movement (arrow F4) on said rod (100) for the purpose of screwing, so as to apply a tension in the attachment created. The invention also relates to the rivet enabling such a method to be implemented, as well as the fitting tool adapted to said rivet.