Abstract: A dialysis device for performing a dialysis treatment can include a liquid conducting system, which comprises a first section and a second section. A differential pressure sensor can be included for measuring a differential pressure pdiffm between a first pressure (p1) in the first section of the liquid conducting system and a second pressure (p2) in the second section of the liquid conducting system. A monitoring unit is also provided, which is configured to determine an operating status based on the measured differential pressure pdiffm. A control device is also provided, which is configured to interrupt and/or block the dialysis treatment according to the determined operating status. A display device is also provided, which is configured to output a notification based on the determined operating status.

Abstract: A method for the production of a poppet valve which is armoured in at least the region of a valve seat, comprising providing a substantially cylindrical or cup-shaped semi-finished product produced from a valve steel, which is coated with an armouring material, whereupon the coated semi-finished product is formed into an armoured poppet valve.

Abstract: The present disclosure pertains to medical device such as a dialysis device for performing a hemodialysis, and/or hemofiltration and/or hemodiafiltration. The medical device can include a first functional module and a second functional module, wherein an operating hours counter for counting the operating hours is provided in the first functional module, and wherein the first functional module is configured to store an operating hours value determined by the operating hours counter in a first storage of the first functional module. In some embodiments, a second storage is provided in the second functional module, wherein the second functional module is configured to store the operating hours value determined by the operating hours counter of the first functional module in the second storage.

Abstract: A valve rotating device with valve stem seal includes a valve rotating device, with a cylinder head rest and a spring rest intended to bear against a valve spring during operation. The valve rotating device is designed to rotate the spring rest relative to the cylinder head rest during operation. A valve stem seal is attached to the cylinder head rest of the valve rotating device. The valve stem seal being designed to bear against a valve stem and to seal same during rotational and axial movements.

Abstract: A method for the production of a poppet valve which is armoured in at least the region of a valve seat, comprising providing a substantially cylindrical or cup-shaped semi-finished product produced from a valve steel, which is coated with an armouring material, whereupon the coated semi-finished product is formed into an armoured poppet valve.

Abstract: A valve rotating device with valve stem seal includes a valve rotating device, with a cylinder head rest and a spring rest intended to bear against a valve spring during operation. The valve rotating device is designed to rotate the spring rest relative to the cylinder head rest during operation. A valve stem seal is attached to the cylinder head rest of the valve rotating device. The valve stem seal being designed to bear against a valve stem and to seal same during rotational and axial movements.

Abstract: An internally cooled inlet or outlet valve for internal combustion engines, has a valve disc, a valve stem and a cavity inside the valve stem and the valve disc. A coolant is arranged in the cavity, wherein the cavity is provided with at least one guide vane for the coolant.

Abstract: A method for manufacturing a poppet valve or mushroom valve includes providing a mixture of metal powder and a binder, filling and pressing said mixture in a mold, to obtain a green product, removing the binder from the green product, and thermally sintering the green product to a poppet valve blank, by hot isostatic pressing. A poppet valve is also provided that is manufactured with this method.

Abstract: A method for the production for a semi-finished valve product (4), includes casting, forging, deep-drawing, pressing and/or drop-welding of one or several metal material into a semi-finished valve product (4) that corresponds to a circle segment of a valve cut open in the axial direction. A valve is produced by welding together at least two semi-finished valve products (4) into an internally cooled valve, with the weld running in the axial direction of the valve.

Abstract: A poppet valve (2) with a valve body (4) has a cavity (6), a coolant inlet port (8). A coolant outlet port (10). The coolant inlet port (8) and the coolant outlet port (10) are arranged on a valve stem (12) of the poppet valve (2). The cavity (6) extends into the valve stem (12) of the poppet valve (2) and into a valve head (14) of the poppet valve (2), wherein there is provided a coolant conducting element (16) within the cavity (6) and extending into the cavity (6) from the valve head (14) to the valve stem (12), where the coolant conducting element (16) in each case has a cross-section. The coolant conducting element (16) includes a pipe section (18) and a funnel section (20), and the coolant conducting element (16) extends concentrically to the poppet valve (2) in the cavity (6) of the poppet valve (2).

Abstract: A dialysis device for performing a dialysis treatment can include a liquid conducting system, which comprises a first section and a second section. A differential pressure sensor can be included for measuring a differential pressure pdiffm between a first pressure (p1) in the first section of the liquid conducting system and a second pressure (p2) in the second section of the liquid conducting system. A monitoring unit is also provided, which is configured to determine an operating status based on the measured differential pressure pdiffm. A control device is also provided, which is configured to interrupt and/or block the dialysis treatment according to the determined operating status. A display device is also provided, which is configured to output a notification based on the determined operating status.

Abstract: The present invention pertains to medical device (1), preferably a dialysis device for performing a hemodialysis, and/or hemofiltration and/or hemodiafiltration, comprising a first functional module (CPU1) and a second functional module (CPU2), wherein an operating hours counter (2) for counting the operating hours is provided in the first functional module (CPU1), and wherein the first functional module (CPU1) is configured to store an operating hours value determined by the operating hours counter (2) in the a first storage (M1) of the first functional module (CPU1), wherein a second storage (M2) is provided in the second functional module (CPU2), wherein the second functional module (CPU2) is configured to store the operating hours value determined by the operating hours counter (2) of the first functional module (CPU1) in the second storage (M2).

Abstract: A method for manufacturing a poppet valve or mushroom valve includes providing a mixture of metal powder and a binder, filling and pressing said mixture in a mold, to obtain a green product, removing the binder from the green product, and thermally sintering the green product to a poppet valve blank, by hot isostatic pressing. A poppet valve is also provided that is manufactured with this method.

Abstract: A poppet valve (2) with a valve body (4) has a cavity (6), a coolant inlet port (8). A coolant outlet port (10). The coolant inlet port (8) and the coolant outlet port (10) are arranged on a valve stem (12) of the poppet valve (2). The cavity (6) extends into the valve stem (12) of the poppet valve (2) and into a valve head (14) of the poppet valve (2), wherein there is provided a coolant conducting element (16) within the cavity (6) and extending into the cavity (6) from the valve head (14) to the valve stem (12), where the coolant conducting element (16) in each case has a cross-section. The coolant conducting element (16) includes a pipe section (18) and a funnel section (20), and the coolant conducting element (16) extends concentrically to the poppet valve (2) in the cavity (6) of the poppet valve (2).

Abstract: A method for the production for a semi-finished valve product (4), includes casting, forging, deep-drawing, pressing and/or drop-welding of one or several metal material into a semi-finished valve product (4) that corresponds to a circle segment of a valve cut open in the axial direction. A valve is produced by welding together at least two semi-finished valve products (4) into an internally cooled valve, with the weld running in the axial direction of the valve.

Abstract: The invention relates to a cooled inlet or outlet valve (4) for internal combustion engines, comprising a valve disc (6), a valve stem (8), and a hollow space (10) inside the valve stem (8) and the valve disc (6). A coolant (12) is arranged in the hollow space (10). The valve is designed comprising at least two parts and has on a valve disc surface (22) an opening (18) which is closed by a cover (20), wherein the cover (20) is additionally provided with at least one relief groove (34) which relieves a joint (32) between the opening (18) in the valve disc surface (22) and the cover (20).

Abstract: A method and a device for the production of an internally cooled inlet or outlet valve for internal combustion engines, together with the resultant valve includes provision of a workpiece, which has a cylindrical stem and a cylindrical hole and, extends in the axial direction from one end of the valve stem. The method includes reshaping the end of the valve stern by form rolling of the cylindrical stem to a smaller diameter, wherein a diameter of the cylindrical hole is reduced, wherein the cylindrical hole remains. The method further includes reshaping by form rolling the section of the workpiece that is adjacent to the valve stem to form the valve head.

Abstract: An internally cooled inlet or outlet valve for internal combustion engines, has a valve disc, a valve stem and a cavity inside the valve stem and the valve disc. A coolant is arranged in the cavity, wherein the cavity is provided with at least one guide vane for the coolant.

Abstract: The present invention relates to a blood treatment device, in particular a dialysis machine, with at least one adjusting means by means of which the blood pump delivery rate can be adjusted, with detection means for detecting at least two physical attributes, wherein the same each are a physical attribute of a patient to be treated with the blood treatment device, and wherein the blood treatment device is formed such that by means of the adjusting means the blood pump delivery rate can be adjusted and/or limited with reference to the detected at least two physical attributes. Furthermore, the present invention relates to a method for adjusting operating parameters of a blood treatment device.

Abstract: A device for the actuation of a gas shuttle valve in an internal combustion engine that allows an optimization of both engine performance and fuel consumption by providing a variable valve lift. The lift of the gas shuttle valve can be varied by adjusting the effective axial distance of the actuators. As needed, the valve lift is increased or decreased in order to either improve engine performance or fuel consumption.