Abstract: A pump with positive displacement for pumping and entrainment of a fluid in piping (3), includes a cylinder (6) which contains deformable pumping bellows (12) which separate two pumping chambers, a driver (34, 29) which is associated with the pumping unit (12) and has an actuator unit (29) inside the cylinder (6) which is connected to the pumping unit (12), and coils (34) for transmission of drive energy to the actuator (29) from outside the cylinder (6), and a manifold (2) with vortex fluid diodes, which is designed to control the global direction of pumping and flow of the fluid in the piping (3).

Abstract: The invention relates to a pneumatic gripper comprising at least one movable finger of which the clamping force is controlled by the weight of the object handled. Each movable finger includes a pneumatic actuator (1) of which the movable member (2) is solidly joined to a flexible blade (4). A stop member (4) is fastened to the free portion of this blade (4) and will touch the object to be seized. Two potentiometers (9, 11) are located on the sides of this blade (4) and their respective outlets (9b, 11b) are connected to an actuation chamber of the actuator so as to achieve a pressure difference between these chambers (1a, 1b) and hence a clamping force directly related to the blade bending. Each finger furthermore includes proximity sensors (7) for the object to be seized, whereby this object can be approached rapidly without danger of tipping it over when making contact with it.