Abstract: A switch module for a communication network switch comprises first and second switching units each for communicating with one or more network communication interfaces, and a switch interface connected to each of the first and second switching units and having a pair of communication ports for enabling data to be transferred on to a local communication path which is connected between the local communication ports.

Abstract: In a holding arrangement (101) for a medical-optical instrument (103), an electric motor is provided in a rotational joint (111, 119) to compensate a load torque occurring in this rotational joint. This electric motor is supplied with current in correspondence to a detected position of the rotational joint (111, 119). A current control curve required for this purpose is stored in a memory. This current control curve can be determined in that the rotational joints are deflected with the electric motor into predetermined positions and the current demand needed therefor is detected.

Abstract: A medical procedure includes providing a prosthesis which includes (i) a body portion having a rear surface and a bearing surface, and (ii) an anchor peg including a shaft extending from the rear surface of the body portion, wherein the anchor peg includes a plurality of outwardly extending fins secured to the shaft, and further wherein the plurality of outwardly extending fins each possesses a first diameter. The medical procedure further includes creating an anchor hole in a natural bone, the anchor hole possessing a second diameter which is less than the first diameter. In addition, the method procedure includes positioning the anchor peg within the anchor hole so that each of the plurality of outwardly extending fins deforms so as to possess (i) a concave side which faces an open end of the anchor hole, and (ii) a convex side that faces a closed end of the anchor hole.

Abstract: A microscopy system method for inspecting a retina of an eye comprises generating an inverted intermediate image of the retina using an ophtalmoscopic lens; detecting a left image of the intermediate image from a left viewing direction and detecting a right image of the intermediate image from a right viewing direction; and displaying an inverted representation of the detected left image to a right eye of a user and displaying an inverted representation of the detected right image to a left eye of the user.

Abstract: In a holding arrangement (101) for a medical-optical instrument (103), an electric motor is provided in a rotational joint (111, 119) to compensate a load torque occurring in this rotational joint. This electric motor is supplied with current in correspondence to a detected position of the rotational joint (111, 119). A current control curve required for this purpose is stored in a memory. This current control curve can be determined in that the rotational joints are deflected with the electric motor into predetermined positions and the current demand needed therefor is detected.

Abstract: A microscopy system allows to superimpose a light optically generated microscopic image of an object with an electronically generated image. The electronically generated image is composed of two input images, one of which is independent of optical settings of an ocular tube, such as a rotational position and a magnification thereof, and the other input image is dependent of the optical setting.

Abstract: A web winding apparatus comprises one or more wind mandrels (3) each supported for rotation about its central axis, and a core forming apparatus (1) for forming a core on the or on each mandrel (3) in turn from a continuous web (5) of gummed material. The core forming apparatus (1) comprises means (6) for presenting the free end of the continuous web (5) to a winding mandrel (3), means for rotating the winding mandrel about its central axis to cause the web (5) to wrap around the winding mandrel (3), means (10) for applying water to the web (10) to activate the adhesive and thereby bond together the layers of paper wrapped on the winding mandrel (3) and means for cutting the continuous web from the core when the core has reached a predetermined diameter.

Abstract: A switch module for a communication network switch comprises first and second switching units each for communicating with one or more network communication interfaces, and a switch interface connected to each of the first and second switching units and having a pair of communication ports for enabling data to be transferred on to a local communication path which is connected between the local communication ports.

Abstract: A pivot mounting assembly is provided including a pivot arm (5) hinged to a pivot base (3) for mounting a load in a vertically adjustable manner. A first force-providing device (13) is hinged with its first operative end to the pivot arm and is supported with its second (17) operative ends on the pivot base for providing an antitorque moment to at least partially compensate for a torque imparted by the load on the pivot arm. The pivot base is provided with a support surface (27) in which the support location (49) for the second operative end is shiftable. A second force-providing device (36) is provided for generating a shifting force the second operative end of the first force-providing device.

Abstract: A pivot mounting assembly is provided including a pivot arm (5) hinged to a pivot base (3) for mounting a load in a vertically adjustable manner. A first force-providing device (13) is hinged with its first operative end to the pivot arm and is supported with its second (17) operative ends on the pivot base for providing an antitorque moment to at least partially compensate for a torque imparted by the load on the pivot arm. The pivot base is provided with a support surface (27) in which the support location (49) for the second operative end is shiftable. A second force-providing device (36) is provided for generating a shifting force the second operative end of the first force-providing device.

Abstract: A stand for a device, which is to be movably arranged, has a first stand part and a second stand part, which is movable relative to the first stand part, and which includes a pivot arm, pivotable around a pivot axis (A2) and jointed to the first stand part. An energy storage device is provided, which exerts at a fixed point of action of the pivot arm a force directed to an abutment point of the energy storage device on the first stand part. The pivot axis (A2) and the abutment point define a vertical plane, the abutment point being spatially fixed relative to the first stand part during a pivoting of the pivot arm. A cord parallelogram coupling the motion of a first stand arm and a second stand arm includes a closed cord length running around two deflecting rollers, and has a rod section between the deflecting rollers. A linear slide and pivot unit is arranged between a mounting arm and the movably arranged device and makes possible displacements of the center of gravity of the movably arranged device.

Abstract: The invention is directed to a temperature measuring head for rapidly measuring the temperature of a workpiece on a coordinate measuring apparatus. To rapidly measure the temperature of the workpiece, the coordinate measuring probe element is exchanged for a temperature measuring head which operates pursuant to the principle of a switching probe head. The measuring head supplies a contact signal after contact with the workpiece takes place. From this time point on, the temperature variation is measured by the temperature measuring head and the determined values are stored in the computer of the coordinate measuring apparatus. The temperature of the workpiece is extrapolated via a numerical evaluation method from a specific measurement interval. After the necessary measurement interval, the temperature measuring head is exchanged for the needed probe element combination. The invention is also directed to a temperature measuring head for carrying out the method of the invention.

Abstract: The invention is directed to an electromagnetic holding device which includes one or more permanent magnets and an electromagnet. The holding device releases and pulls in units which are held thereon. During an exchange operation, the field of the electromagnet is superposable on the field of the permanent magnet either in the same direction or in the opposing direction and thereby intensifies or neutralizes the holding force. In order to provide the smallest possible assembly volume and lowest weight with the highest possible holding force, the permanent magnet is disposed ahead of the electromagnet when viewed with respect to the exchange face. When the exchange part is pulled in, the field lines of the electromagnet run in a completely closed flux-conducting part which is not interrupted at any location by an air gap.

Abstract: To overcome friction in the mount of the switching-type probe head, a probe (5/6) displaceably mounted therein is transiently excited in oscillation for a predetermined time after each contacting process. The same piezoelectric element (17) as that which produces the initial work-contact signal in the probe head can additionally be used to stimulate the oscillations.

Abstract: The invention contemplates a pneumatically driven piston as a preloading device, continuously urging the movable part (11) of a probe head into precise seating engagement with its fixed bearing (10), (12) in the housing of the probe head. The piston is movable in a cylinder (4) that is supplied with variable regulated pressure determined by a controlled regulating valve (16). Different contacting forces can be automatically and rapidly adjusted by the control system (18) of a coordinate-measuring machine to which the probe head is mounted, and the probe head can be tared to compensate for the different individual weights of successively different probe pins that are used in a given program of multiple-point coordinate measurements on a workpiece.

Abstract: For a horizontal orientation of a switching-type probe head, force developing device is provided to compensate for a component (F.sub.1) of the gravitational weight vector (F.sub.g) of the deflectably movable part (11) of the probe head, the compensating force being perpendicular to the direction of loading the movable part (11) into its at-rest (undeflected) null position in the probe head. This force-developing device is illustratively a magnetic bearing (5, 6) which is operative without involving any added mechanically contacting action within the probe head.