Abstract: A hydraulic machine is provided comprising a cylinder unit (3) having a plurality of cylinders (4a, 4b) which are located on a circle line around an axis of rotation of said cylinder unit (3), a valve plate (6) located at an axial end of said cylinder unit (3) and having a through-going opening (8) for each cylinder (4a, 4b), and a port plate, said valve plate (6) and said port plate resting against each other in sliding contact at a contact face, wherein a pressure in each cylinder (4a, 4b) acts on a pressure area on a side of said valve plate (6) opposite said port plate. In such a hydraulic machine the risk of leaking should be kept small. To this end said pressure area (17) deviates from a circular form.

Abstract: A hydraulic machine is provided comprising a cylinder unit (3) having a plurality of cylinders (4a, 4b) which are located on a circle line around an axis of rotation of said cylinder unit (3), a valve plate (6) located at an axial end of said cylinder unit (3) and having a through-going opening (8) for each cylinder (4a, 4b), and a port plate, said valve plate (6) and said port plate resting against each other in sliding contact at a contact face, wherein a pressure in each cylinder (4a, 4b) acts on a pressure area on a side of said valve plate (6) opposite said port plate. In such a hydraulic machine the risk of leaking should be kept small. To this end said pressure area (17) deviates from a circular form.

Abstract: The present invention relates to a multi-orientational cooling system with a bubble pump for generation of a circulating flow of cooling fluid. The cooling system is a closed cooling system comprising at least one hollow member facilitating flow of the cooling fluid, comprising a first heat-receiving part, a heat-emitting part, and a tubular first part adapted for functioning, in a first angular orientation of the system, as a first bubble pump for generation of a fluid flow in the system and being positioned down-stream the first heat-receiving part, and a tubular second part adapted for functioning, in a second angular orientation of the system, as a second bubble pump for generation of a fluid flow in the system and being positioned downstream the first heat-receiving part.

Abstract: A device for cooling, in particular for cooling electronic components, in particular a processor unit, having an evaporator for absorbing heat in a coolant, in particular through evaporation, having a gas cooler for cooling the coolant, in particular through condensation, having a first coolant conduit for the communicating connection of an evaporator outlet to a gas cooler inlet, and having a second coolant conduit for the communicating connection of a gas cooler outlet to an evaporator inlet, the first coolant conduit is plugged onto the evaporator outlet and/or is plugged into the gas cooler inlet with an excess length, and in that the second coolant conduit is plugged onto the gas cooler outlet and/or is plugged into the evaporator inlet with an excess length.

Abstract: A device for cooling, in particular electronic components, in particular of a processor unit, having an evaporator for the absorption of heat in a coolant in particular by means of evaporation; a gas cooler for cooling of the coolant in particular by means of condensation; a first coolant conduit for communicating connection of an evaporator outlet with a gas cooler inlet; a second coolant conduit for communicating connection of a gas cooler outlet with an evaporator inlet; a filling device for filling of the device with coolant; and the filling device is arranged on the evaporator or on the gas cooler.

Abstract: The present invention relates to a closed system for cooling without moving mechanical parts and at a low noise level, one or more heat-emitting elements. The system comprises a first heat-receiving part that is adapted to receive heat from the at least one heat-emitting element, a cooling fluid for absorption of heat by heating and evaporation, a bubble pump for generation of a fluid flow in the system, the bubble pump being positioned downstream the first heat-receiving part and moving the cooling fluid towards a radiator emission of heat from the cooling fluid in liquid form to the surroundings, and a condenser for condensing of evaporated cooling fluid and emission of the heat of condensation.

Abstract: Hydraulic vane machine with a rotor having several radially movable vanes, and with a stator having a stator bore, in which the rotor is arranged rotatably, and whose internal wall is made as a guiding contour on which the vanes bear, and with a sideplate arrangement on each axial front side of rotor and stator, which define the vane cells together with the rotor, the vanes and the stator. In such a machine an improvement of the operation behaviour is desired. For this purpose, the sideplate arrangements are fixed on the rotor and rotate together with the rotor in relation to the stator.

Abstract: A hydraulic axial piston machine (1) is disclosed, having a cylinder drum (3) with at least one cylinder (4), in which a piston (5) is arranged to move back and forth, which piston bears by way of a slider shoe (7) against a swash plate (8), wherein a pressure plate (9) is provided which holds the slider shoe (7) in contact with the swash plate (8) and is supported against the cylinder drum (3) by way of a ball-and-socket joint (10) comprising a ball-like body (12) and a counterpart (13). In such an arrangement, one would like to avoid weakening the pressure plate by the ball-and-socket joint. To that end, a part of the ball-and-socket joint (10) is provided with a supporting surface (17) which extends substantially parallel to the surface of the pressure plate (9) and by means of which this element (12) lies in face-to-face contact with the pressure plate (9).

Abstract: A piston with a slide shoe for a hydraulic piston engine, where the slide shoe comprises a ball socket, and where the piston is arranged with a corresponding ball head, whereby these are joined in a ball-and-socket joint, and where at least partially the ball head is constituted of a spherical surface of a friction reducing material moulded onto and retained in relation the piston. As a consequence of the subsequent shrinking of the moulded-on, friction reducing material, a possibility is obtained of good fixation of the ball head on the piston, while at the same time a gap can be created between the ball socket and the ball head.

Abstract: A piston with a slide shoe is described for a hydraulic piston engine, where the piston is designed with a ball socket, and where the slide shoe is provided with a corresponding ball head, whereby these are connected in a ball-and-socket joint, and where the ball head of the slide shoe is designed as a unit moulded into the ball socket in friction reducing material so that the ball head is captured in the ball socket. Hereby an improved fixation of the moulded-on all head on the slide shoe is achieved.

Abstract: A hydraulic axial piston machine is disclosed, having a cylinder drum which is mounted for rotation relative to a housing (1), with a bearing (3) having a slide face (4) being arranged between the circumference of the cylinder drum and the housing (1). It is desired that such a machine shall be capable of operating also with fluids that are not such good lubricants as hydraulic oil. For that purpose the slide face (4) is formed by a friction-reducing plastics material and has at least one recess (5, 6, 7) communicating with at least one end edge of the slide face (4).