Abstract: A liquid fuel portable heater (100) comprises: a combustion chamber (101) having a fuel inlet with a nebuliser (13); an electric pump (10) having an inlet (11) for suctioning said liquid fuel from a tank (6), and an outlet (12) connected to said nebuliser (13); a control unit (20) configured so that, when the heater (100) is turned on, said control unit (20) supplies the electric pump with a sequence of pulses (115, 115?) with a non-zero voltage, and pause intervals (116) with a substantially zero voltage alternating with said pulses, wherein the average duration of the pulses (115, 115?) is less than the average duration of the pause intervals (116).

Abstract: An anti-roll structure suitable for blocking rolling objects. The anti-roll structure comprises a first support element and a second support element, which consist in, respectively, a lying surface adapted to be placed on a bearing plane and, parallel to the said bearing plane, and a support surface, opposite to the lying surface and inclined with respect to the said lying surface. A junction element is positioned so that it lies on a plane perpendicular to the lying surface and supporting surface. The first and second support element can be placed at a predefined angle with respect to each other by means of the junction element.

Abstract: A liquid fuel portable heater (100) comprises: a combustion chamber (101) having a fuel inlet with a nebuliser (13); an electric pump (10) having an inlet (11) for suctioning said liquid fuel from a tank (6), and an outlet (12) connected to said nebuliser (13); a control unit (20) configured so that, when the heater (100) is turned on, said control unit (20) supplies the electric pump with a sequence of pulses (115, 115?) with a non-zero voltage, and pause intervals (116) with a substantially zero voltage alternating with said pulses, wherein the average duration of the pulses (115, 115?) is less than the average duration of the pause intervals (116).

Abstract: An anti-roll structure suitable for blocking rolling objects. The anti-roll structure comprises a first support element and a second support element, which consist in, respectively, a lying surface adapted to be placed on a bearing plane and, parallel to the said bearing plane, and a support surface, opposite to the lying surface and inclined with respect to the said lying surface. A junction element is positioned so that it lies on a plane perpendicular to the lying surface and supporting surface. The first and second support element can be placed at a predefined angle with respect to each other by means of the junction element.

Abstract: An automated actuation group (220) for a porthole (10) provided with a frame-shaped structure (11) and a window (14) constrained so that it can move to the frame (11), wherein the porthole (10) comprises actuator means (100) that force the displacement of an arm element (22, 22?) comprising guide means (24, 24?), such guide means (24, 24?) cooperating with the window (14) forcing it to move with respect to the frame (11) during the opening and the closing of the porthole (10).