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).

Abstract: A container (10) for the preservation of products under vacuum, comprising a lid (20) which is housed on an opening (14) of a containing element (12), wherein said lid (20) comprises a plate (22) equipped with an internal cylindrical structure (30), connected to the inside of the container (10), with respect to which a piston or cap (24) can be moved, said piston or cap (24) being externally activated and above said plate (22), once it is situated on said internal cylindrical structure (30); a closing element (42) is attached to an end of said internal cylindrical structure (30), forming with said piston (24) a chamber having a varying volume (A), there being at least two unidirectional valves (57, 58, 60, 64) which, on the one hand (in 60, 64), connect said chamber (A) to the inside of the container (10), and, on the other (in 57, 58), to the outside air, together with a washer (28) between said opening (14) and a portion (in 26) of said plate (22).

Abstract: A moulding method, carried out by a mould for a conventional injection press, suitable for cost-effectively realising a piece in one or more injectable materials, the mould comprising a mobile part and a fixed part, on such mobile and fixed parts being realised respective impressions, which define, when the mobile part is closed against the fixed part, recesses suitable for receiving the injectable materials in at least two successive injection steps; the method comprises a step of housing a sliding element in at least a first recess, a first injection step in such a first recess, after which a first part of the piece remains fixed on a surface integral to such a sliding element, a displacement step of such a first part of the piece in a second recess and then a second injection step in such a second recess.