Saes Getters S.p.a.

Gruppo Rold S.p.a.

Marco Citro

Stefano Alacqua

Salvatore Coco

Davide Frigerio

Michele Scarlata

Giorgio Vergani

Paolo Barbatelli

Stefano Mattia Franceschinis

Francesco Butera

Luca Fumagalli

Gaetano Cascini

Matteo Zanella

An asymmetric bistable shape memory alloy inertial actuator capable of preventing accidental actuation caused by environmental temperature variations but preserving temperature-related safety features and its use in devices.

Asymmetric bistable shape memory alloy inertial actuator

Bistable shape memory alloy inertial actuator capable of preventing accidental actuation caused by environmental temperature variations, its method of operation and its use in devices.

Bistable shape memory alloy inertial actuator

A fluidic valve having a first zone and a second zone separated by an aperture that is sealed by a deformable element, where: in the first zone, there is a shape memory alloy (SMA) wire secured to a stationary surface and the SMA acts on a first surface of the deformable element either directly or through a piston; in the second zone, there are at least two ports and a plunger connected to a second surface of the deformable element, opposite to the first surface, and suitable to close one of the ports; and there is a bypass channel that permanently connects the first zone to the second zone through a first end aperture positioned in the first zone and a second end aperture positioned in the second zone.

Balanced pressure two-zone fluidic valve with shape memory alloy control element

The present invention relates in a first aspect to an actuator subassembly comprising a shape memory alloy wire (), a biasing spring () and magnetic responsive elements (') to couple the movement of a first movable element () and a second movable element () provided with a terminal (), and in a second aspect to a fluidic valve comprising a plunger whose terminal part controls its opening and closing and where the plunger movement is controlled by the action of a shape memory alloy wire, a biasing element and magnetic responsive elements.

Shape memory alloy actuator subassembly with magnetic elements and fluidic valve incorporating the same

Actuator assemblies comprising a core made up of a shape memory alloy wire and a coating containing a distribution of Phase Changing Material (PCM) particles with a given weight ratio between said particles and said shape memory alloy wire, and active cloths incorporating one or more of said actuator assemblies.

Actuator assemblies comprising shape memory alloy wires and a coating with phase changing materials particles

The present invention relates to linear actuators comprising an electrically-controlled shape memory alloy coil spring () suitable to provide linear displacements in valves, switches, lock systems and provided with a crimped terminal at each extremity, each of said crimped terminals comprising a crimping component () and an engaging member () suitable to mount the spring () into the linear actuator. The invention further discloses the use of said spring () with particular geometrical characteristics and crimping system assuring the maximization of the available stroke and fatigue life, structural simplicity, low electrical power requirements and thermal inertia, small size.

Linear actuator comprising a shape memory alloy coil spring operating at low electrical power

Thermostatic shape memory alloy torsional actuator comprising a torsional shape memory alloy wire () connecting a stationary element () with a rotatable element () so as to move the latter between a rest position and an operating position, and a return element () acting on the rotatable element () so as to move the latter between said operating position and said rest position, and fluid control thermostatic valves comprising such torsional actuator.

Shape memory alloy wire thermostatic torsional actuator and valve including it

The present invention relates to a heat shielding composite cloth () comprising at least one pair of layers () movably connected to each other by one or more Shape Memory Alloy (SMA) wires (). The invention also relates to garments incorporating such heat shielding composite cloth ().

Heat shielding composite cloth

An airbag module comprises a control unit, a source of electric current managed by the control unit, a container wherein a gas is stored under pressure, and a hollow body with an inlet duct, in which an outlet of the container sealed by a pierceable membrane is tightly fitted, and an outlet duct on which an inflatable bag is tightly assembled. The airbag module further comprises an actuator assembly configured to pierce open the membrane sealing the container, said actuator assembly comprising a piercing member movably restrained to the body and at least one linear shape memory alloy wire actuator member that is electrically connected to the source of electric current and operably restrained to the piercing member so as to cause it to move beyond the pierceable membrane.

Airbag module

The present invention relates to a shock absorbing device incorporating a plurality of wavy shaped elements made of a superelastic material arranged in a crossing pattern, wherein pairs of crests or troughs of said wavy shaped elements made of a superelastic material are restrained to each other in a locking manner by way of connecting elements.

Shock absorbing device

A shock-absorbing devices comprising a plurality of slender metallic structures having a slenderness ratio equal to or higher than 10 is described. Systems and/or components using such devices are also described.

Shock-absorbing device

A ballistic protection structure has a first ballistic layer made of a textile of synthetic fibers and a second ballistic layer comprising a first holding element on which slender metallic structures in the form of flat sheets and/or straight filiform elements are restrained. The metallic structures are restrained at different points of the first holding element and protrude therefrom generally perpendicularly. The free ends of the slender metallic structures are restrained to the first textile layer.

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Varese, Italy

Marco Citro