Abstract: A heat sink including a first face in contact with electronic components generating heat to be removed and a second face in contact with the medium into which to dissipate the heat generated by the electronic components, including: at least one device for enhancing the thermal conductivity including a dome-shaped surface, a pin and a lateral section of revolution about the pin, the dome-shaped surface being connected to one end of a pin and to the lateral section of revolution, the dome-shaped surface being arranged on the second-face side, the free end of the pin being arranged on the first-face side.

Abstract: The invention includes a lighting device with a signaling module that can move in at least a first direction and a lighting module that can move in a second direction different from the first direction. The movable lighting module being able to take a position that is invisible and a position that is visible from outside the lighting device. The lighting device further including a controller designed to control a movement of the lighting module such that: in a first mode, called daytime mode, the lighting module assumes the invisible position; in a second mode, called nighttime mode, the lighting module assumes the visible position. The controller moves of the signaling module such that at least one part of the signaling module moves in the first direction in order to authorize a movement of the lighting module in the second direction from the invisible position to the visible position.

Abstract: The invention includes a lighting device with a signaling module that can move in at least a first direction and a lighting module that can move in a second direction different from the first direction. The movable lighting module being able to take a position that is invisible and a position that is visible from outside the lighting device. The lighting device further including a controller designed to control a movement of the lighting module such that: in a first mode, called daytime mode, the lighting module assumes the invisible position; in a second mode, called nighttime mode, the lighting module assumes the visible position. The controller moves of the signaling module such that at least one part of the signaling module moves in the first direction in order to authorize a movement of the lighting module in the second direction from the invisible position to the visible position.

Abstract: A pyrotechnic cut-off device includes: a pyrotechnic igniter, a conductive portion and a movable piston, the piston being able to be displaced in a cavity along a direction of displacement following the actuation of the pyrotechnic igniter between a first position of passage of the current in the conductive portion and a second position of cut-off of the current, wherein the piston defines a first sealing portion having a narrowing of section along the direction of displacement, and the cavity has a wall defining a second sealing portion which extends on either side of the conductive portion and which has a narrowing of section along the direction of displacement, the first sealing portion being in contact with the second sealing portion along a contact surface extending on either side of the conductive portion when the piston is in the second position.

Abstract: A pyrotechnic cut-off device includes: a pyrotechnic igniter, a conductive portion and a movable piston, the piston being able to be displaced in a cavity along a direction of displacement following the actuation of the pyrotechnic igniter between a first position of passage of the current in the conductive portion and a second position of cut-off of the current, wherein the piston defines a first sealing portion having a narrowing of section along the direction of displacement, and the cavity has a wall defining a second sealing portion which extends on either side of the conductive portion and which has a narrowing of section along the direction of displacement, the first sealing portion being in contact with the second sealing portion along a contact surface extending on either side of the conductive portion when the piston is in the second position.

Abstract: A heat sink including a first face in contact with electronic components generating heat to be removed and a second face in contact with the medium into which to dissipate the heat generated by the electronic components, including: at least one device for enhancing the thermal conductivity including a dome-shaped surface, a pin and a lateral section of revolution about the pin, the dome-shaped surface being connected to one end of a pin and to the lateral section of revolution, the dome-shaped surface being arranged on the second-face side, the free end of the pin being arranged on the first-face side.

Abstract: A heat sink device including a body and at least one main cold plate in contact with the at least one casing of an electronic device, the electronic device furthermore being provided with at least two pins for connecting to a printed circuit board and generating heat when it is activated. At least one secondary cold plate is in contact with the printed circuit board in the vicinity of the connecting pins.

Abstract: A pyrotechnic short-circuiter has a body including a first chamber in communication with a pyrotechnic initiator; a second chamber having present therein a support in the form of a slide having present thereon two conductive parts, the support defining a housing, each conductive part having a deformable end portion, and a piston having a fitted conductive element, the pyrotechnic initiator being configured to cause the piston to pass from a first position in which the conductive element is disengaged from the end portions to a second position in which the conductive element is inserted in the housing and is in contact with each deformable end portion, the deformable end portions, in the second position, being deformed and exerting a holding force serving to block the conductive element in position in the housing.

Abstract: A fin for a surfboard, having a main body which comprises a first edge which is in contact with the board when the fin is secured to the board, a leading edge at the front and a trailing edge at the rear, a rear curve connecting the leading edge and the trailing edge, the trailing edge comprising a forwardmost front tip. The main body is extended rearwards by an arm which extends from a straight line which is perpendicular to the first edge and passes through the front tip of the trailing edge, as far as the rear curve, the arm having a length greater than approximately 8 cm.