Abstract: A device for lifting and transporting a load attached by a sling includes a hook comprising a throat opening intended to receive a loop on a sling. The device includes a latch that can pivot between an open position and a closed position in which said throat opening is obstructed. The device includes a locking device including a locked position in which said locking device prevents the latch from turning in the closed position, and an unlocked position in which the latch can rotate; a lever including a loaded position in which said lever holds the locking device in the locked position and a released position in which said lever does not hold said locking device. A rotation of the latch from the closed position to the open position triggers the lever from the loaded position to the released position.

Abstract: The invention relates to a fastener (10) for the temporary assembly of at least two pre-drilled structures of the type comprising: a body (11) able to come into contact with a face of the structures to be assembled; a spacer (17), secured to said body; two elastic half-clips (15), each clip having a hooking spur (16); a mechanism that can be moved relative to the body, comprising a threaded rod (18) connected to the half-clips, and a control nut (20) mounted on said rod, the control nut comprising: an internal tapping (19) cooperating with the thread (25) of the rod; an external thread (26) cooperating with an internal tapping (28) of the body; the body thread and the control nut thread being opposite handed.

Abstract: A cage nut and a method of installing a cage nut include a nut with a tubular body and a flange, and a nut support having a nut cage for receiving the nut. The nut support includes a tubular portion wherein an external surface of the tubular portion includes longitudinal splines having a diameter smaller than a diameter of a bore of a workpiece, and at least two longitudinal ribs having a diameter greater than the diameter of the bore.

Abstract: An installation tool for a fastener of the “pull screw” type, comprising a breakable gripping element includes a body, a first sleeve movable axially and rotationally in the body that can drive the gripping element, a second sleeve movable axially in the body and immovable in rotation, and a driving device provided with a turning shaft. The shaft comprises a first free wheel for driving the first sleeve in rotation, a second free wheel, and a driving element positioned coaxially around the second free wheel. The driving element cooperates using a helical link with the second sleeve. The first free wheel drives the first sleeve in rotation in a first rotation direction of the shaft. The second free wheel brings the driving element in rotation in a second rotation direction of the shaft to move the second sleeve axially, allowing full setting in a single operating sequence.

Abstract: It has become apparent that the dimensions of inbuilt-collar driving means of the same nominal size may vary according to the method of manufacture. The dimensions of the collar must therefore be adapted to suit the mode of manufacture, at the expense of its strength or mass. Moreover, the transmissible torque for tightening and loosening operations varies according to a useful wrenching height. In order to have a useful height identical to the height of the shank (7), the idea underlying the invention involves pushing the frustoconical collar (152) of a driving means (151) in towards its center along the extension of the sides of the shank. The inbuilt-collar driving means proposed by the invention is suited to all modes of manufacture, and can be manufactured without adversely affecting the dimensions of the driving means or its installation.

Abstract: The invention relates to a fastener for assembling at least two structural elements, comprising a aperture, the fastener comprising an enlarged head (12) and a shank (14) exhibiting, prior to fitting, an outside diameter (D1) greater than an inside diameter (DS) of the aperture, and a locking portion comprising a screw thread or annular grooves. The fastener further comprises a lubricating sacrificial ring (40) on the exterior surface of the fastener, extending at least between a distal end of the shank and a proximal end of the locking portion, said ring having, before the fastener is fitted into the structure, an outside diameter greater than a diameter of the aperture. The sacrificial ring comprises a polymer resin forming a matrix encapsulating dispersant molecules and oil molecules. The invention applies to the assembly of aircraft structures.

Abstract: A rivet may include a pin comprising: a threaded portion (36), a shank (38) and a head (40); and a bushing (32) comprising an essentially cylindrical body, said body comprising a deformation zone designed to form an external bulge (80); a collar (70) designed to receive the head of the pin; and a tapped portion (66) designed to engage with the threaded portion of the pin. The shank (38) of the pin comprises a first cylindrical portion (44) and a second cylindrical portion (46) connected by a shoulder (48), the first portion being adjacent to the head and having a first diameter, the second portion being adjacent to the threaded portion and having a second, smaller diameter.

Abstract: The object of the invention is a cap to lubricate an inner wall of a perforation going through at least two elements of the structure. The cap comprises a tubular body and at least one lubricant reserve, and before installation in the structure said cap has a largest external diameter larger than an internal diameter (DS) of the perforation, and the cap lubricates the internal surface of the perforation when its largest external diameter is radially compressed by a wall of the perforation. The invention also concerns a fastener comprising this type of cap, and an interference assembly process for the fastener equipped with the cap. The invention is applicable to the assembly of aircraft structures.

Abstract: The present invention relates to a nut (32) for assembling elements of a structure, said nut comprising: a collar (64) capable of coming into contact with a front face of the structure; a tightening zone having an outer diameter (86) capable of being inserted into a hole of the structure; a deformation zone adjacent to the tightening zone and capable of forming a bulge against a rear face of the structure, opposite the front face; and a tapped portion (65) adjacent to the deformation zone. The nut comprises grooving (82) on an outer circumference of at least one part of the deformation zone, a maximum diameter of said grooving (82) being less than or equal to the outer diameter (86) of the tightening zone.

Abstract: An indicator and a fastener and indicator assembly have an inwardly extending engagement portion on the indicator for engaging a complementary portion on the fastener. The fastener may include an annular groove and the indicator may include a complementary annular rim for extending into the annular groove of the fastener. A portion or all of the indicator may be resiliently flexible, and configured so that part or all of the indicator is stretched when in place on the fastener. Examples of fasteners may include nuts and/or bolts.

Abstract: A control ring and a method of using a control ring on fasteners can be used to verify a headed fastener having a band coating a fastener shaft. The ring comprises a cylindrical tubular body extending along an axis of revolution (B) and two opposite extremities. A first extremity includes two adjacent arc segments, each arc segment having an end wall extending in a plane perpendicular to the axis of revolution (B) of the ring, the planes of the two walls not being one and the same and axially offset from the first extremity. Each arc segment comprises at least one side wall extending over a radial plane going through the axis of revolution (B) of the ring. The width of an arc segment allows verifying a minimum band width, and the width of the two arc segments allows verifying a maximum band width on the fastener.

Abstract: The invention relates to a sealing nut comprising a nut and a deformable sealing ring, wherein the nut comprises an annular body, a base comprising a counterbore, and a bore made in the base, the bore comprises an annular back wall having a length extending between a first inner radius and a second inner radius, the sealing ring comprises an annular body and an end face suitable for resting against the back wall, and the end face has a length extending between an inner radius and an outer radius. The ratio between the length of the back wall of the bore and the length of the end face of the ring is between 20 and 45%. The invention can be used in assemblies of airplane structures.

Abstract: The invention involves a keeper (20) to interact with a bolt (16) of a lock (10); The keeper includes a bracket (22) for attachment to a structure, and a keeper rod (24) secured to the bracket, the keeper rod extending from one surface (27) of the bracket. In the keeper, a shaft (32) is attached to the bracket and can rotate freely relative to the bracket such that it extends in a longitudinal direction (X); a blade (40) is mounted on the shaft (32) on one side of the bracket near the keeper rod in such a way as to always rotate along with the shaft; an angular position indicator (46) is also mounted so as to always rotate along with the shaft; the blade being so positioned that it can be rotated by the latch when the latch hooks on to or releases from the keeper rod, and the angular position indicator (46) being capable of indicating the angular position of the blade. The invention is for example intended to be used on an aircraft door such as that of a helicopter.

Abstract: The invention relates to a tool (15) for installing fasteners, said tool comprising: a sheath containing a cylindrical housing (18) with a polygonal base, a roller cage (19) accommodated within said cylindrical housing, said cage comprising: a cylindrical support (33) with a substantially circular base, capable of pivoting within the cylindrical housing. rollers (34) disposed on the perimeter of the support, each roller being able to rotate with respect to said support, a compressing spring (36) exerting a radial force on the rollers in the direction of the main axis, the tool further comprising a restoring member (37) tending to bring the rollers of the cage to face the edges (27) of the cylindrical housing of the sheath.

Abstract: The invention concerns a fastener used to attach structural components that have aligned perforations with a nominal diameter (D), where the fastener comprises a minimum grip plane (Gmin) and a maximum grip plane (Gmax), and A screw (12) comprising an enlarged head and a threaded portion (22); A sleeve (30) comprising an enlarged head, a cylindrical tubular body and a tapped portion (36) that engages the threaded portion (22) of the screw, where the tapped portion (36) is adjacent to an internally smooth portion of the body (34) of the sleeve. This smooth portion has a thickness (E), a non-deformable area (A) adjacent to the head of the sleeve and a deformable area (B) adjacent the non-deformable area (A). The sleeve's deformable area (B) can be deformed into a bulb (48) intended to come into contact with a blind side (46) of the structural components.

Abstract: It has become apparent that the dimensions of inbuilt-collar driving means of the same nominal size may vary according to the method of manufacture. The dimensions of the collar must therefore be adapted to suit the mode of manufacture, at the expense of its strength or mass. Moreover, the transmissible torque for tightening and loosening operations varies according to a useful wrenching height. In order to have a useful height identical to the height of the shank, the idea underlying the invention involves pushing the frustoconical collar of a driving means in towards its center along the extension of the sides of the shank. The inbuilt-collar driving means of the invention is suited to all modes of manufacture, and can be manufactured without adversely affecting the dimensions of the driving means or its installation.

Abstract: The invention relates to an insert (10) comprising a first end (12) defining a circular opening (14), a cylindrical body (16) having an inner wall (18) and an outer wall, and a second end (20) defining an opening (22) and forming an enlarged flange (24), characterized in that the body comprises a first portion (28) adjacent to the first end and provided with an outer thread (30), and a second portion (32) adjacent to the first portion and comprising at least two cutouts (34) defining at least two flexible tabs (36) extending axially, and each tab has an outer thread (38) and forms an angle (?), towards the outside of the body, with respect to the axis (A). Such an insert is used for axially positioning the outer rings of bearings.

Abstract: A fastening bolt has a threaded screw (11) with a terminal portion (18) whose diameter (19) is less than that of the threaded portion, and an end surface (21) of said terminal portion has a transverse opening groove (22). The fastening bolt also has a nut (30) comprising a threaded body (32) and an unthreaded crown (34) drilled with at least two holes (35) diametrically opposite to one another and a rod (23), able to fit in the groove of the screw and in the two lateral holes of the nut to lock the bolt. The body of the nut comprises a driving portion (38), as well as a cylindrical portion (39) less thick than the driving portion, and the cylindrical portion (39) of the nut has an elliptical deformation that was previously a circular shape.

Abstract: A clip nut 100 has first and second opposed arms 202, 204 extending longitudinally and the second arm 204 includes first and second walls 222, 224 extending transversely of the clip nut, and the first wall 222 includes a first plurality of cavities 234, 236 and the second wall 224 includes a second plurality of cavities 248, 250. A nut 102 includes legs 112, 114 extending into respective cavities. The nut is assembled with the clip nut by putting a leg into a cavity in the first wall and moving the nut toward the second arm to engage a cavity in the second wall.

Abstract: The invention relates to a metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener. The invention further relates to a method for obtaining such a fastener and to a method for installing such a fastener in a structure. The invention is applicable to the assembly of aircraft structures.