Abrégé

A metal component (112) made of a base metal and a coating system (500) thereon is characterized in that the coating system comprises a conductive layer (502) on the base metal and a resin- based layer (504) including conductive pigments (508) on the conductive layer. The conductive pigments (508) form electrically conductive 3D-networks in the resin, with the networks being randomly distributed in the resin. Aerospace fasteners having a coating system of a nickel flash on the base metal, and a phenolic resin-based coating including nickel fibers on the nickel flash, are also provided. Further, a method for coating a metal component is disclosed. The coating system (500) may be applied to metal components, including aerospace fasteners such as pins, bolts, collars, nuts and nut plates, and washers, as well as studs, latches, helicopter rotors, and landing gear structures.

Classes IPC  ?

• F16B 1/00 - Dispositifs pour assembler des éléments structuraux ou parties de machines ou bien pour empêcher tout mouvement relatif entre eux
• F16B 5/02 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par organes de fixation utilisant un filetage

Abrégé

L'invention concerne un outillage de pose d'une fixation 10 du type tirer-visser , comportant un élément de préhension cassable, dans une structure 400.L'outillage de pose comprend un corps, un premier fourreau 220 mobile axialement et en rotation dans le corps pouvant entraîner l'élément de préhension, un deuxième fourreau mobile axialement dans le corps et immobile en rotation, et un moyen d'entraînement pourvu d'un arbre tournant.L'arbre comporte une première roue libre pouvant entraîner en rotation le premier fourreau, une deuxième roue libre, et un élément d'entraînement disposé coaxialement autour de la deuxième roue libre. L'élément d'entraînement coopère par une liaison hélicoïdale avec le deuxième fourreau. La première roue libre entraîne en rotation le premier fourreau dans un premier sens de rotation de l'arbre. La deuxième roue libre entraîne en rotation l'élément d'entraînement dans un deuxième sens de rotation de l'arbre pour déplacer axialement le deuxième fourreau.L'outillage de pose permet ainsi dans une seule séquence opératoire de tirer sur la fixation pour former un bulbe sur la face aveugle de la structure, de visser la vis et de casser l'élément de préhension.

Classes IPC  ?

• B21J 15/04 - Rivetage mécanique de rivets creux
• B25B 21/00 - Outils portatifs à moteur pour serrer ou desserrer les vis ou les écrousAccessoires pour appareils à percer ayant les mêmes buts
• B64F 5/10 - Fabrication ou assemblage d’aéronefs, p. ex. gabarits à cet effet
• F16B 13/06 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion et combinées avec un manchon extensible
• F16B 19/10 - Rivets creuxRivets en plusieurs morceaux fixés par action mécanique
• F16B 29/00 - Assemblage à vis avec déformation de l'écrou ou d'un organe auxiliaire pendant la fixation

Abrégé

The invention relates to a positive locking fastener comprising: - a screw (1) having a radial hole (120) at a threaded portion (12); - a nut (2) having a tightening portion (21); - a cap (3); and - a pin (4). The cap has a locking portion (31) intended to cover the threaded portion and an immobilising portion (30) intended to engage with a tightening portion of the nut. The locking portion comprises at least one pair of diametrically opposed openings (32) suitable for allowing a pair of openings to be aligned with the radial hole, in order to allow the pin to be inserted and thus lock the fastening regardless of the relative position of the nut with respect to the screw. The invention also relates to a method for implementing the fastener according to the invention.

Classes IPC  ?

• F16B 37/14 - Écrous-chapeauxChapeaux d'écrous ou de boulons
• F16B 39/08 - Blocage des vis, boulons ou écrous dans lequel le verrouillage s'effectue après vissage avec un chapeau agissant contre l'écrou relié au boulon par une broche ou une goupille fendue

Abrégé

The invention relates to a sealing nut comprising a nut and a deformable sealing ring, the nut comprising an annular casing, a base comprising a chamber, a bore in the base, the bore comprising a bottom annular wall having a length extending between a first inside section and a second inside section, the sealing ring comprising an annular casing and an end face that can be rested against the bottom wall, the end face having a length extending between an inside section and an outside section. The ratio of the length of the bottom wall of the bore to the end face of the ring is somewhere between 20% and 45%. The invention is applicable to aircraft structure assemblies.

Classes IPC  ?

• F16B 29/00 - Assemblage à vis avec déformation de l'écrou ou d'un organe auxiliaire pendant la fixation
• F16B 37/00 - Écrous ou pièces similaires avec entrées de filetage
• F16B 43/00 - Rondelles ou dispositifs équivalentsAutres dispositifs de support pour têtes de boulons ou d'écrous
• F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique

Abrégé

The invention relates to an attachment for attaching structural elements having aligned bores having a nominal diameter (D), the attachment including a minimum tightening plane (Gmin) and a maximum tightening plane (Gmax), and a screw (12) including a widened head and a threaded portion (22), a sleeve (30) including a widened head, a cylindrical tubular body and a tapped portion (36) interlocking with the threaded portion (22) of the screw, the tapped portion (36) being adjacent to an inwardly smooth portion of the body (34) of the sleeve, said smooth portion having a thickness (E), a not easily deformable area (A) adjacent to the head of the sleeve and a deformable area (B) adjacent to the not easily deformable area (A), the deformable area (B) of the sleeve can deform to a bulb (48) intended to come into contact with a blind surface (46) of the structural elements. The deformable area (B) extends along a length (L) greater than a minimum length (Lmin) and less than a maximum length (Lmax), such that: Lmin = D/2 + 2E + (Gmax - Gmin), Lmax = (E/0.092). The invention applies in particular to the assembly of aircraft structures.

Classes IPC  ?

• F16B 19/10 - Rivets creuxRivets en plusieurs morceaux fixés par action mécanique

Abrégé

The invention relates to an insert (10) including a first end (12) defining a circular opening (14), a cylindrical body (16) having an inner wall (18) and an outer wall, a second end (20) defining an opening (22) and forming a widened neck (24), characterised in that the body includes a first portion (28), adjacent to the first end, provided with an outer thread (30), and a second portion (32), adjacent to the first portion, including at least two cut-outs (34) defining at least two flexible tabs (36) extending axially, each tab having an outer thread (38) and forming an angle (a) with an axis (A) of the insert towards the outside of the body. Such an insert is used for axially positioning the outer rings of bearings.

Classes IPC  ?

• F16B 39/284 - Blocage par déformation élastique

Abrégé

RIVET FOR BLIND FASTENING, ASSOCIATED SETTING TOOL AND SETTING METHOD FOR SUCH A RIVET The invention relates to a rivet for blind fastening, comprising a screw with a gripping element, a rupture groove, a head separated from the gripping element by the rupture groove and a threaded part; a socket with a flange and a tubular shaft comprising a tapping intended to engage with the threaded part of the screw. The gripping element comprises a first gripping portion able to guide the introduction of the rivet in a setting tool and a second gripping portion able to transmit a torsion torque, the two gripping portions being separated by a locking portion able to limit axial movement of the rivet in a setting tool. The invention also relates to a setting nose to install such a rivet, as well as a setting method. The invention is particularly applicable to the assembly of aircraft structures.

Classes IPC  ?

• B21J 15/02 - Procédés de rivetage
• B23P 19/00 - Machines effectuant simplement l'assemblage ou la séparation de pièces ou d'objets métalliques entre eux ou des pièces métalliques avec des pièces non métalliques, que cela entraîne ou non une certaine déformationOutils ou dispositifs à cet effet dans la mesure où ils ne sont pas prévus dans d'autres classes
• F16B 5/04 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par rivetage
• F16B 13/12 - Chevilles métalliques creuses bloquées par insertion d'un clou, d'une vis ou d'une pièce similaire
• F16B 19/02 - Chevilles ou manchons pour positionner les parties de machines, p. ex. goupilles coniques à encoche, goupilles de montage, manchons, bagues excentriques d'ajustement
• F16B 19/10 - Rivets creuxRivets en plusieurs morceaux fixés par action mécanique
• F16B 29/00 - Assemblage à vis avec déformation de l'écrou ou d'un organe auxiliaire pendant la fixation

Abrégé

The invention concerns a metal attachment for providing an electrically conductive surface through the entire thickness of structural elements to be assembled. The attachment therefore comprises a head (12) and a smooth barrel (12) extending along an axis of revolution, the barrel comprising at least one conductive portion (24) and one lubricating portion (22) disposed along the axis of revolution of the attachment on at least one length of the barrel. The attachment according to the invention provides a conductive surface through the entire thickness of the structure in which it is installed. The attachment according to the invention is intended, in particular, for aeronautical applications.

Classes IPC  ?

• B64D 45/02 - Dispositifs de protection contre la foudreDéperditeurs de potentiel
• F16B 33/00 - Caractéristiques communes aux boulons et aux écrous

Abrégé

The invention concerns a fixing member (1) including a threaded end shank (6) of which one end face features an imprint (10) capable of receiving a complementary shaped tip, the said imprint (10), including a peripheral edge (12) in the shape of a multi-lobed, continuous curved line. Each lobe L is defined in sections by a continuous series of three arcs of a circle, namely a first convex circle arc (14) featuring a first radius (R1), around which second concave arc circles (16) with a second radius (R2) are placed on each side. Each lobe is connected to the adjacent lobe by a third convex circle arc (18, 18) with a third radius (R3, R3) greater than the first radius (R1). The invention also concerns a male member (34, 58) with a raised shape complementary to that of the imprint (10), as well as a manoeuvering tool and an inspection gauge (50) including such a male member.

Classes IPC  ?

• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• F16B 39/00 - Blocage des vis, boulons ou écrous

Abrégé

According to the prior art, there is a multiplicity of drilling and length families by fixation diameter recognition, contrarily to cylindrical smooth portion fixations for which a single tool is not sufficient. The person skilled in the art must plan the adequate tool and device for each thickness of a member to be clamped, which represents an important tool cost and also a time loss due to the change of tools. The purpose of the invention is to adapt the taper ratio (C1; C2) of the device (1, 20) based on the thickness to be clamped (12, 31). Preferably, the taper ratio of the bushings ranges between 1 and 4 %. Accordingly, using three to four reference sets of devices having the same outer diameter (16A, 16C) but a different taper ratio, it is possible to clamp any potential member thickness with modifying the bore diameter of members to be assembled.

Classes IPC  ?

• F16B 5/02 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par organes de fixation utilisant un filetage

Abrégé

It has become apparent that the dimensions of inbuilt-collar driving means of the same nominal size can vary according to the manufacturing process. The dimensions of the collar have to be adapted to suit the method of manufacture accordingly, at the expense of strength or mass. In addition, the torque that can be transmitted for tightening and loosening varies according to a useful height on which a wrench can gain a purchase. The idea underlying the invention, in order to have a useful height identical to the height of shank (7) is for the frustoconical collar (152) of a driving means (151) to be pushed in towards its centre in the continuation of the faces of the shank. The driving means with inbuilt collar proposed by the invention is suited to all methods of manufacture, and can be manufactured without adversely affecting the dimensions of the driving means or how it is fitted.

Classes IPC  ?

• F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
• F16B 37/00 - Écrous ou pièces similaires avec entrées de filetage