Abstract: A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The first jaw comprises a first engagement section and the second jaw comprises a second engagement section. The press ring comprises a first and a second receiving section for receiving the first and the second engagement section of the press jaws, respectively. A first and a second surface of the first and the second receiving section, respectively, contact the first and the second engagement section, respectively. Each comprise a planar surface. The first and the second contact surface oppose each other for applying a press force F. The first contact surface and the second contact surface each comprise at least one convex surface.

Abstract: A device for in-vitro modelling in-vivo tissues of organs that includes a device for in-vitro modelling in-vivo tissues of organs, the device including an open access chamber, a perfusion channel, and a culturing membrane dividing the access chamber from the perfusion channel, wherein the culturing membrane is porous and flexible and/or elastic.

Abstract: A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The first jaw comprises a first engagement section and the second jaw comprises a second engagement section. The press ring comprises a first and a second receiving section for receiving the first and the second engagement section of the press jaws, respectively. A first and a second surface of the first and the second receiving section, respectively, contact the first and the second engagement section, respectively. Each comprise a planar surface, and the first engagement section comprises a first contact surface and the second engagement section comprises a second contact surface. The first and the second contact surface oppose each other for applying a press force F.

Abstract: A device for in-vitro modelling in-vivo tissues of organs that includes a first body portion with at least one access chamber, a second body portion with at least one culturing chamber, and a culturing membrane dividing the at least one access chamber from the culturing chamber. The device further includes a third body portion with at least one actuation chamber having at least one limitation cavity, and an actuation membrane dividing the at least one culturing chamber from the at least one actuation chamber. With the device, a robust actuation system can be provided that does not depend on the mechanical properties of the actuation membrane material, nor on the pressure, and that allows to mimic three-dimensional deformations of the tissue, in particular of lung alveoli.

Abstract: A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The jaws comprise engagement sections. The press ring comprises receiving sections for receiving the engagement sections of the press jaws. A first and a second surface of the receiving sections, contact the engagement sections. Each of the first and second surface comprises a planar surface. The engagement sections comprise contact surfaces. The contact surfaces oppose each other for applying a press force F. The contact surfaces each comprise at least one convex surface, such that a radius of curvature r of the first and the second contact surface is larger than half a width Wx, Wz, measured perpendicular to an axis of curvature, of the respective first and second contact surface.

Abstract: A press ring (1) for pressing tubular workpieces (35), comprising: at least two movable press jaws (3); and at least one connecting press jaw (5) connecting the movable press jaws (3); wherein the movable press jaws (3) are each hinged at their proximal ends to the connecting press jaw (5) by means of respective bolts (9), so that the distal ends (7) of the movable press jaws (3) can be rotated towards and away from each other to close respectively open the press ring (1) to receive a workpiece (35) therein, and characterized in that the respective bolts (9) are arranged in elongated holes (11), allowing a translational displacement of the bolts (9) in the elongated holes (11) upon rotating the movable press jaws (3).

Abstract: A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The first jaw comprises a first engagement section and the second jaw comprises a second engagement section. The press ring comprises a first and a second receiving section for receiving the first and the second engagement section of the press jaws, respectively. A first and a second surface of the first and the second receiving section, respectively, contact the first and the second engagement section, respectively. Each comprise a planar surface, and the first engagement section comprises a first contact surface and the second engagement section comprises a second contact surface. The first and the second contact surface oppose each other for applying a press force F.

Abstract: A press ring (1) for pressing tubular workpieces (35), comprising: at least two movable press jaws (3); and at least one connecting press jaw (5) connecting the movable press jaws (3); wherein the movable press jaws (3) are each hinged at their proximal ends to the connecting press jaw (5) by means of respective bolts (9), so that the distal ends (7) of the movable press jaws (3) can be rotated towards and away from each other to close respectively open the press ring (1) to receive a workpiece (35) therein, and characterized in that the respective bolts (9) are arranged in elongated holes (11), allowing a translational displacement of the bolts (9) in the elongated holes (11) upon rotating the movable press jaws (3).

Abstract: A tool head for a pressing machine and a pressing machine for plastically deforming a tubular workpiece are described. In many applications, the tubular workpiece is a fitting. The tool head includes a base body, a fixed press jaw and a linearly movable press jaw. A spring element is arranged to preload the movable press jaw against a workpiece without plastically deforming the workpiece.

Abstract: A device for in-vitro modelling in-vivo tissues of organs that includes a first body portion with at least one access chamber, a second body portion with at least one culturing chamber, and a culturing membrane dividing the at least one access chamber from the culturing chamber. The device further includes a third body portion with at least one actuation chamber having at least one limitation cavity, and an actuation membrane dividing the at least one culturing chamber from the at least one actuation chamber. With the device, a robust actuation system can be provided that does not depend on the mechanical properties of the actuation membrane material, nor on the pressure, and that allows to mimic three-dimensional deformations of the tissue, in particular of lung alveoli.

Abstract: A device for in-vitro modelling in-vivo tissues of organs that includes a first body portion with at least one access chamber, a second body portion with at least one culturing chamber, and a culturing membrane dividing the at least one access chamber from the culturing chamber. The device further includes a third body portion with at least one actuation chamber having at least one limitation cavity, and an actuation membrane dividing the at least one culturing chamber from the at least one actuation chamber. With the device, a robust actuation system can be provided that does not depend on the mechanical properties of the actuation membrane material, nor on the pressure, and that allows to mimic three-dimensional deformations of the tissue, in particular of lung alveoli.

Abstract: The invention relates to the information transmission between a data-transmitting apparatus and a read- and/or write module, in particular for the use of access control. According to the invention, data to be transmitted is represented as a digital signal by the data-transmitting apparatus, and this signal is converted into an ultra-broadband signal by way of the spread spectrum method, and capacitively and/or resistively transferred via the body of the user to the write- and/or read module.

Abstract: A device (201) for in-vitro modelling in-vivo tissues of organs, comprises: a first body portion (207) with at least one access chamber (213), a second body portion (205) with at least one culturing chamber (221), and a culturing membrane (206) dividing the at least one access chamber (213) from the culturing chamber (221). The device further comprises a third body portion (203) with at least one actuation chamber (220) having at least one limitation cavity, and an actuation membrane (204) dividing the at least one culturing chamber (221) from the at least one actuation chamber (220). With the device according to the invention a robust actuation system can be provided that does not depend on the mechanical properties of the actuation membrane material, nor on the pressure, and that allows to mimic three-dimensional deformations of the tissue, in particular of lung alveoli.

Abstract: A system is provided with a portable device (31) for the transmission of signals to a second device, wherein the portable device (31) is wearable on the body of a user. The portable device (31) includes at least two electrodes (3, 4) and transmitter electronics (7) for applying an electrical signal between the electrodes, in such a way that the signal between the electrodes (3, 4) is able to be coupled into the body of the user and detected by at least one electrode of the second device. The transmitter electronics are an application specific integrated circuit and thus include both means for the production of electrical signals that are dependent upon specified data, as well as means for applying the electrical signal between the electrodes. The means for generating electrical signals that are dependent upon specified data are typically digital circuits for the encoding of specified data that are to be transmitted and for the modulation of the data that are so encoded.

Abstract: A press jaw pair for producing a press fit of fittings on pipes and the like has a first and a second one-piece press jaw lever (1, 2) that are arranged such that they are rotatable about a common axis (x). At least one bearing lug (4, 8) with a bearing opening (5, 9) is integrally formed on each press jaw lever (1, 2), wherein the bearing lugs (4, 8) are arranged coaxially in the fitting state. A torsion spring element (3) with two stop cams (10, 11) can be inserted into the bearing openings (5, 9) in such a way that the two press jaw levers (1, 2) are supported about the common axis (x) in a spring-loaded fashion and held in a mutually captive fashion.

Abstract: A pressing tool having a drive unit, a piston-cylinder unit with a fork-like receiver and an actual clamping pincer. The clamping pincer has a T-shaped mounting which, with a retaining bolt and a retaining bolt receiver, is connected to a fork-like receiver. In the fork-like receiver, a roller holder with two rollers is located. The fork-like receiver is part of the piston-cylinder unit. On actuation of the pressing tool, the piston-cylinder unit is pulled back and thus the roller holder with the rollers is moved forward relative thereto in an axial direction towards the clamping pincer. Thus, the rollers roll on roll flanks of the clamping jaws of the clamping pincer. The clamping pincer is pressed together by the rollers pressing apart the clamping jaws at the rear. Thus, the rollers are supported on a bearing block with sliding bearing surfaces.

Abstract: A press jaw pair for producing a press fit of fittings on pipes and the like has a first and a second one-piece press jaw lever (1, 2) that are arranged such that they are rotatable about a common axis (x). At least one bearing lug (4, 8) with a bearing opening (5, 9) is integrally formed on each press jaw lever (1, 2), wherein the bearing lugs (4, 8) are arranged coaxially in the fitting state. A torsion spring element (3) with two stop cams (10, 11) can be inserted into the bearing openings (5, 9) in such a way that the two press jaw levers (1, 2) are supported about the common axis (x) in a spring-loaded fashion and held in a mutually captive fashion.