Lisi Aerospace

Jérôme Couderc

Guy Pailhories

Olivier Gay

Frederic Bigot

This invention relates to a pin comprising a head () and a threaded portion, an end of the head forming an end surface () on a first plane perpendicular to the main axis. The pin further comprises a handling component () which is an integral part of the head, a junction () between that head and the handling component comprising a breakneck groove () with a rotational shape. A section of the breakneck groove has an arc of circle portion (), a center () of that circle primarily in the first plane, so that a plane containing the breakneck groove () surface clearly coincides with the first plane.

Pin with breakneck groove, fastener comprising such a pin, related assembly and installation method

A rivet for blind fastening may include a screw with a handling element, a break groove, a head separated from the handling element by the break groove, and a threaded part. The rivet may also include a sleeve with a collar and a tubular shank having an internal thread intended to come into engagement with the threaded part of the screw. The handling element includes a first handling portion able to guide introduction of the rivet in a setting tool, and a second handling portion able to transmit a torque, the two handling portions being separated by a blocking portion able to limit an axial movement of the rivet in a setting tool. A setting nose may be used for installing such a rivet, and the rivet, setting nose and a setting method can be used in the assembly of aircraft structures.

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Lafouillade, France

Jérôme Couderc