Abstract: A switchable gear in a handheld power tool has at least two gear stages which are to be engaged via an adjustable switching member, the switching member being in a latched position via a retaining element fixedly held against a housing in a first gear stage. Furthermore, a spindle for receiving a tool may be driven via an axially spring-loaded gear wheel, the gear wheel being axially supported on the retaining element on the side opposite the switching member.

Abstract: In a hand-held machine tool, having a tool holder for holding at least one first tool, which has a tang having a first coupling contour that is able to be connected to the tool holder and having a striking mechanism for the striking drive of the first tool connected to the tool holder in the axial direction of the tool holder in a striking operation associated with the hand-held machine tool, a chuck adapter is provided to hold at least one second tool, which has a tang provided with a second coupling contour, which is able to be connected to the chuck adapter in a torsionally fixed manner.

Abstract: Coated catalysts comprising a catalytically active multimetal oxide comprising molybdenum. The coated catalyst comprises a support body, a first layer and a second layer. The first layer comprises a molybdenum oxide or a precursor compound which forms molybdenum oxide. The second layer comprises a multimetal oxide comprising molybdenum and at least one further metal.

Abstract: A method and system for managing a large number of servers and their server components distributed throughout a heterogeneous computing environment is provided. In one embodiment, an authenticated user, such as a IT system administrator, can securely and simultaneously control and configure multiple servers, supporting different operating systems, through a “virtual server.” A virtual server is an abstract model representing a collection of actual target servers. To represent multiple physical servers as one virtual server, abstract system calls that extend execution of operating-system-specific system calls to multiple servers, regardless of their supported operating systems, are used. A virtual server is implemented by a virtual server client and a collection of virtual server agents associated with a collection of actual servers.

Abstract: A switchable gear drive for a handheld power tool has two gears which are to be engaged via an adjustable switching member, the switching member being in a locked position with a retaining ring which is fixedly held on a housing in a first gear and being in an unlocked position with the retaining ring in a second gear. Furthermore, a spindle for accommodating a tool is drivable by an axially spring-loaded gear wheel supported in the housing, the gear wheel being axially supported on the retaining ring on the side diametrically opposed to the switching member. The retaining ring is designed as a circumferential, closed ring.

Abstract: A device for fastening an electronic module on a mounting rail and an electronic module fastened with the device on a mounting rail are provided. The device has a displaceable nose, encompassing a profile of the mounting rail together with a stationary nose provided on the back of a housing of the electronic module. The displaceable nose is configured as a clamping profile of a slide. By plugging in mechanical anchorings, the device is mounted in recesses of the housing on the back of the electronic module. The device has a spring mechanism provided to support the electronic module on the housing. A clamping force of the device on the mounting rail results from a force to the slide applied by the spring mechanism. An end of the slide opposite of the displaceable nose protrudes beyond the housing of the electronic module for the manual displacement of the displaceable nose.

Abstract: A hand-held power tool protective device (10a-d) for a hand-held power tool (12a-d) with a drive unit and a tool (26a-d) includes an operating element (14a-d, 16a-d) which can actuate an electrical switch for activating the drive unit and a shut-off unit (18a-d) have a shut-off mechanism (24a-d). The shut-off unit (18a-d) brings about a shut-off during a deactivation of the operating element (14a-d, 16a-d) and therefore, a deactivation of the drive unit via the at least one shut-off means (24a-d). An emergency shut-off unit (28a-d) enables an emergency shut-off of an operation of the tool (26a-d) when the operating element (14a-d, 16a-d) is activated. The shut-off unit (18a-d) and the emergency shut-off unit (28a-d) are at least partially formed integrally.

Abstract: The invention relates to a flow limiter for a fluid flowing in an aspiration branch of a surgical system, which fluid is a surgical fluid and has emulsified particles in a surgical intervention, with a limiter element that comprises at least one flow channel arrangement with at least one main channel and at least one subsidiary channel that opens into the main channel at an angle of greater than or equal to 90°. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: A method and system for executing and undoing distributed server change operations for a collection of server objects across multiple target servers in a transaction-safe manner is provided. In one embodiment, server change operations for a collection of server objects, such as files and configuration file entries, are specified in a transaction package. The target servers to which the specified change operation are directed are also identified in the transaction package. Parameter values for each of the identified target servers are specified through a parameter file in the transaction package. The transaction package is sent to the identified target servers, which execute the change operations on the target servers in a transaction-safe manner using these parameter values.

Abstract: The invention relates to a phacoemulsification device, comprising: —a hand piece having a cutting tip for emulsifying a lens, wherein the tool holder is provided with piezoelectric elements for deflecting the cutting tip, —a regulator, the input of which is electrically connected to the tool holder, for receiving an actual value that is proportional to the voltage induced on the piezoelectric elements of the tool holder that is constantly oscillating on the natural frequency thereof, said regulator being suitable for comparing the actual value with a predetermined target value, thus determining an actuating variable, —a power amplifier, the input of which is connected to the regulator in order to receive the actuating variable, and the output of which is connected to the tool holder, wherein the tool holder may be actuated simultaneously with the receipt of the actual value and a power output to the tool holder being able to occur, such that a direct feedback coupling may be attained, thus enabling the tool h

Abstract: A power tool, in particular a hand-held power tool, preferably embodied as a cordless screwdriver, is equipped with a torque limiting unit in which the release torque is settable by way of a locking brace that is equipped with a spring brace for locking elements that abut axially against parts of a planetary drive, in particular the ring gear thereof or the planet carrier thereof as a last gear stage, the spring elements of the spring brace and the locking elements being located with a radial offset from one another.

Abstract: A hammer mechanism is described as having a snap die, a tool chuck drive shaft, and an impact generating shutoff unit, which has a blocking element, which is provided for the purpose of preventing an axial displacement of the snap die. The blocking element acts on the snap die in parallel to at least one force of the tool chuck drive shaft, at least during a drilling operation.

Abstract: Disclosed is a machine tool having a spindle driven by a drive device, the spindle having a receiving device on its free end for a tool or a tool holder, an input part being provided in the drive train of the drive device, the input part transferring a torque having a defined play in the direction of rotation via drivers to an output part which is joined in a rotationally fixed manner to the spindle, while a torque acting from the spindle in the direction of the drive device and exceeding a torque on the input side is supported on the housing of the machine tool via clamping surfaces on the periphery of the output part, via clamping elements and via a locking ring having a hollow cylindrical surface. The output part is a driving profile having two or more axially parallel planes, of which a first part acts as clamping surfaces and a second part acts as driving surfaces which cooperate with the drivers of the input part.

Abstract: A method for making a mesoporous or combined mesoporous/microporous inorganic oxide includes reacting a source of inorganic oxide with a complexing agent at a complexation temperature to provide a complex; decomposing the complex to provide a porous material precursor having an inorganic oxide framework containing at least some organic pore-forming agent; and removing the organic pore forming agent from the inorganic oxide framework by solvent extraction and/or calcination.

Abstract: A hand-held machine tool device, in particular, for a screwdriver (12a-h), having a locking device (14a-h) for locking a power take-off unit (16a-h), and having a rotational bearing device (18a-h) of the power take-off unit (16a-h). It is provided that at least part of the locking device (14a-h) and the rotational bearing device (18a-h) be formed in one piece.

Abstract: A switchable gear in a handheld power tool has at least two gear stages which are to be engaged via an adjustable switching member, the switching member being in a latched position via a retaining element fixedly held against a housing in a first gear stage. Furthermore, a spindle for receiving a tool may be driven via an axially spring-loaded gear wheel, the gear wheel being axially supported on the retaining element on the side opposite the switching member.

Abstract: A method for making a mesoporous or combined mesoporous/microporous inorganic oxide includes reacting a source of inorganic oxide with a complexing agent at a complexation temperature to provide a complex; decomposing the complex to provide a porous material precursor having an inorganic oxide framework containing at least some organic pore-forming agent; and removing the organic pore forming agent from the inorganic oxide framework by solvent extraction and/or calcination.

Abstract: The invention relates to a device for reducing pressure variations in a fluid flowing in an aspiration branch of a surgical system, which pressure variations are generated by a pump that delivers in a non-continuous manner in the active operating state, with a diffuser arrangement which is arranged, in the aspiration branch, upstream of the pump in the direction of flow of the fluid. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.

Abstract: A method for carrying out eye surgery comprises a comparison of images recorded before surgery with images recorded during surgery in order to generate a marker which represents a target orientation of an intraocular lens or a difference between a current orientation and the target orientation of the intraocular lens. An eye surgery system respectively comprises an imaging system which is used during a surgery and has a camera, and a diagnostic system which is used before surgery and which also has a camera. The imaging system used during surgery comprises an image processing device in order to perform a computation based on the recorded images, and in order to determine a respective orientation value, from which a representation of a marker representing the target orientation of the intraocular lens is obtained.

Abstract: A surgical system (1) for controlling a fluid includes an irrigation line (3), which is connected at one end to a first fluid vessel (2) for holding irrigation fluid (21) and is connected at another end to a surgical handpiece (4). The irrigation fluid (21) can be delivered at a first pressure (p1) to the handpiece (4). The surgical system further includes an aspiration inlet line (7), a second fluid vessel (15) for holding irrigation fluid (22), an aspiration venting line (14), which connects the second fluid vessel (15) to the aspiration inlet line (7), a venting valve (17), which is provided in the aspiration venting line (14) and which can switch in dependence on the fluid pressure in the aspiration inlet line (7) and/or irrigation line (3). The second fluid vessel (15) is connected to a pneumatic pressure system (23) with which the fluid (22) in the second fluid vessel (15) can be subjected to a second pressure (p2) that is higher than the first pressure (p1) in the first fluid vessel (2).