Abstract: The invention relates to a fastener comprising a substantially right circular cylindrical surface arranged along an axis, said surface comprising a grooved shape selected from a thread, a tapping and a plurality of traction grooves, said fastener being made of a beta-metastable titanium alloy. The alloy has a microstructure (40) made up of a matrix (42) and alpha phase nodules (44) distributed in said matrix, the matrix being made up of beta phase and groups (46) of alpha phase lamellae (48) oriented in the same direction.

Abstract: The invention relates to a fastener comprising a substantially right circular cylindrical surface arranged along an axis, said surface comprising a grooved shape selected from a thread, a tapping and a plurality of traction grooves, said fastener being made of a beta-metastable titanium alloy. The alloy has a microstructure (40) made up of a matrix (42) and alpha phase nodules (44) distributed in said matrix, the matrix being made up of beta phase and groups (46) of alpha phase lamellae (48) oriented in the same direction.

Abstract: An inflation valve having a tubular core surrounded with an elastically deformable sleeve with a bulb widening toward the internal longitudinal end of the valve and bearing a sealing groove on its outer contour, the groove being adapted for receiving an edge of the orifice of the rim in its interior. There is a cavity between the bulb and the tubular core, having an oval-shaped outer periphery and a first spacing taken in a first direction radial to the tubular core that is greater than a second spacing taken in a second direction perpendicular to the first direction, a cross section of the inflation valve taken at the position of the cavity exhibiting symmetry with respect to the first and second directions.

Abstract: An inflation valve having a tubular core surrounded with an elastically deformable sleeve with a bulb widening toward the internal longitudinal end of the valve and bearing a sealing groove on its outer contour, the groove being adapted for receiving an edge of the orifice of the rim in its interior. There is a cavity between the bulb and the tubular core, having an oval-shaped outer periphery and a first spacing taken in a first direction radial to the tubular core that is greater than a second spacing taken in a second direction perpendicular to the first direction, a cross section of the inflation valve taken at the position of the cavity exhibiting symmetry with respect to the first and second directions.