摘要:
A vehicle seat comprises at least one passage for a heating or conditioning air flow and a flow deviating device associated to the seat to control the flow of air through such passage. The flow deviating device comprises at least one Coanda effect deviating device. In the case of application to the front seat of a car, the passage internal to the seat for the ventilation air flow has an upstream end communicating with an air supplying duct, and a downstream end communicating with a discharge duct whose outlet opens at the rear of the seat, to ventilate the rear part of the car passenger compartment. Said passage inside the seat is formed on the surface of the seat padding in the area of contact with the user's body, immediately below the cover of the padding. The discharge duct is arranged such that the flow of air through the passage carries out a flushing action of the area of contact with the user's body and is not forced to flow substantially through the cover.
摘要:
A gasket for the cylinder head of a motor-vehicle engine comprises: a body, including a polymeric matrix containing a reinforcement material constituted by a dispersion of microfibres or nanofibres or nanotubes of electrically conductive material, in which each nanotube or nanofibre has a substantially elongated conformation; a uniform distribution of electrodes associated to said body; two layers of electrically insulating material, arranged on the top and bottom surfaces of said body, one on top of and one underneath said polymeric matrix, and designed to insulate electrically said dispersion of nanofibres or nanotubes contained therein; and control and processing means, designed to be connected to any pair of electrodes of said distribution for detecting any variation of electrical resistance across said electrodes and consequently determining any corresponding variation of load applied in the axial direction to the gasket, in such a way that the gasket functions as integrated load sensor.
摘要:
A sealing ring is set between the engine block of an internal-combustion engine and a cylinder head fixed to the engine block, within a seat set concentrically around a cylinder of the engine. The sealing ring has a composite structure, with an external hollow annular body made of superelastic material, and an internal hollow annular body including a shape-memory alloy.
摘要:
A locking device for preventing the rotation and/or the axial movement of a pin includes a coil spring wound around at least a portion of the pin and having one end rigidly connected to a support structure. In its undeformed condition, the spring has an internal diameter smaller than the diameter of the pin, whereby in its resting condition the spring is tightened around the pin to prevent a rotation thereof at least in a direction or an axial movement in any direction. The device includes shape memory means for causing the unwinding of the turns of the spring for the purpose of temporarily releasing the pin.
摘要:
A lock (1) comprises at least a bolt (7) actuated by means of a flexible shape memory element (14), which can take an extended and a shortened configuration as a result of heating. Constraint means (P, 10, 17) cause the arrangement of at least an intermediate portion of the shape memory element (13), within which portion said element is associated to the bolt (7); the constraint means (P, 10, 17) are in such relative positions that said intermediate portion of the shape memory element (14) takes a substantially V-shaped arrangement at least when the first controlled element (7) is in its operating position.
摘要:
An assisted manual actuating device includes a controlled member, which can be displaced from a first position into a second position, a control member, which is designed to actuate the controlled member, and a mechanical transmission, which connects the control member to the controlled member. The mechanical transmission includes a shape-memory element, which is supplied by electrical-supply means that can be activated when the control member reaches an actuation position. The assisted manual actuating device includes an activation device having anchoring means for constraining the mechanical transmission when the control member reaches the actuation position of the device in such a way as to enable the mechanical transmission to move only in the direction useful for bringing the controlled member into the second position.