Abstract: A check valve assembly includes a first flapper, a second flapper, an internal passage formed by the first flapper and the second flapper, and a nozzle disposed within the internal passage and configured to generate an internal flow in the internal passage. In response to a fluid flow through the check valve assembly, the first flapper and the second flapper are configured to move between an open position allowing the internal flow through the internal passage and an outer flow outside the internal passage, and a closed position preventing flow through the internal passage. When the first flapper and the second flapper are operably in the open position, the internal flow has a lower pressure than the outer flow outside of the internal passage, such that the first flapper and the second flapper are maintained in the open position.

Abstract: A check valve assembly includes a first flapper, a second flapper, an internal passage formed by the first flapper and the second flapper, and a nozzle disposed within the internal passage and configured to generate an internal flow in the internal passage. In response to a fluid flow through the check valve assembly, the first flapper and the second flapper are configured to move between an open position allowing the internal flow through the internal passage and an outer flow outside the internal passage, and a closed position preventing flow through the internal passage. When the first flapper and the second flapper are operably in the open position, the internal flow has a lower pressure than the outer flow outside of the internal passage, such that the first flapper and the second flapper are maintained in the open position.

Abstract: A gripping device for manipulating flexible elements includes a main rack and a plurality of gripping elements coupled in the main rack by respective operating mechanisms for gripping a flexible element. The gripping device includes at least four gripping elements for gripping the flexible element. At least one gripping element is a multiposition gripping element independently displaceable by a displacement system assembled in the main rack and a vertical operating mechanism. At least two of the other gripping elements are independently displaceable in any direction by respective two-way additional displacement systems assembled in the main rack. The gripping elements are automatically adjustable in their respective positions such that they are arranged in one and the same plane for capturing the flexible element in a flat two-dimensional configuration and movable to generate a three-dimensional configuration in the flexible element without generating stretching forces on the flexible element.

Abstract: Disclosed is a device for preparing preforms of carbon fiber-reinforced components including a preforming mold that can be immobilized on a work bench in an electrically insulated manner, and provided with at least two electrodes in positions in which they contact opposite end areas of the preform to generate a resistive electrical circuit through the carbon fibers to activate a binder present in the preform by heating, a leak-tight elastically deformable compacting membrane capable of adapting to the outer geometry of a preform arranged on the mold, and a pneumatic connection means connected to the compacting device to force the membrane to exert a compacting force on the preform.

Abstract: The invention relates to a gripping device for manipulating flexible elements, coupleable to a robot arm as an end effector, comprising a main rack (14, 15, 17, 18, 19, 20, 24, 25) and a plurality of gripping elements (1-9) coupled in the main rack by means of respective operating mechanisms (1a-1f; 2a-2e; 3a-3f; 4a-4g; 5a-5d; 6a-6g; 7a-7f; 8a-8e; 9a-9f) for gripping a flexible element (10), characterized in that it comprises at least four gripping elements (1-9) for gripping the flexible element (10); at least one gripping element (5) is a multiposition gripping element independently displaceable with respect to the other gripping elements (1-4, 6-9) in at least one direction parallel to the plane defined by the other gripping elements (1-4, 6-9) by means of a displacement system (16, 38, 39, 40, 41, 42, 45) assembled in the main rack (14, 15, 17, 18, 19, 20, 24, 25) and in a perpendicular direction (Z) to said plane by means of a vertical operating mechanism (5b); at least two of the other gripping eleme

Abstract: Disclosed is a device for preparing preforms of carbon fiber-reinforced components including a preforming mold that can be immobilized on a work bench in an electrically insulated manner, and provided with at least two electrodes in positions in which they contact opposite end areas of the preform to generate a resistive electrical circuit through the carbon fibers to activate a binder present in the preform by heating, a leak-tight elastically deformable compacting membrane capable of adapting to the outer geometry of a preform arranged on the mold, and a pneumatic connection means connected to the compacting device to force the membrane to exert a compacting force on the preform.