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: A power drill having percussion drilling function, drilling function and screwing function has a gearing for transmitting the drive motion of a drive unit to a tool spindle. Furthermore, two latching elements are provided which, in the percussion drilling function, are in latching engagement and in the drilling or screwing position are in the disengaged state. A mode setting device has a rotatable supporting ring and a thrust ring, coupled to the supporting ring in a torsionally fixed manner which, in the screwing position is held on the gear housing in an axially displaceable manner.

Abstract: A hand-held power tool having hammer-drilling, drilling and screwing modes, including a mode-setting device having an actuating element, a setting element, and a gear unit for driving an output shaft, in which the actuating and setting elements are interconnected in a rotatably fixed manner, and, in an operating mode(s), the setting element is coupled to a transmission element supported at a coupling housing assigned to the gear unit and axially displaceable at the coupling housing in a screwing position associated with the screwing mode and is axially fixed in position at the coupling housing in hammer-drilling and drilling positions of the corresponding modes; the transmission element is connected to the coupling housing in a rotatably fixed manner, a predefined operating mode being settable by rotating the setting element; the setting and transmission elements being rotatable relative to one another, the setting element embracing at least sections of the transmission element.

Abstract: A hand-held power tool is provided which includes a clutch housing of a torque clutch, and a planetary gear, situated in a gear housing, for transmitting a torque which is generated by a drive motor to a drive shaft. The clutch housing cooperates with the planetary gear via a pressure plate. The pressure plate is displaced in the axial direction in order to disengage the torque clutch. The axial relative motion of the pressure plate causes an axial relative motion between a switching element and an associated optical sensor, via which the drive motor may be switched off.

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: The hydroisomerization of a paraffinic hydrocarbon feedstock obtained from renewable sources is effectively achieved by passing the feedstock in the presence of hydrogen over a hydroisomerization catalyst comprising a crystalline metal silicate molecular sieve, in which a portion of the crystalline framework contains iron.

Abstract: In a handheld electric tool having a tool housing in which is disposed a gearbox for transferring a torque, generated by a drive motor, to a drive spindle with which a spindle locking apparatus is associated, the drive spindle being rotatably mounted in the tool housing at at least two bearing points, the at least two bearing points are provided in the tool housing in a region downstream from the gearbox, and the spindle locking apparatus is disposed between the two bearing points in an axial direction of the drive spindle.

Abstract: A hammer mechanism has a clamping chuck and a snap die provided for the direct striking of an inserted tool. The snap die includes a coupling element for transmitting a rotary motion to the clamping chuck.

Abstract: A hammer mechanism having at least one impact-generation unit and a clamping chuck drive shaft is provided. The impact-generation unit includes a spur-gear transmission stage for translating a rotational speed of the clamping chuck drive shaft into a higher rotational speed for impact generation.

Abstract: A control arrangement for an ophthalmic surgical system for phacoemulsification of an eye lens includes an optical system for generating an image of an object region. At least part of the eye lens to be emulsified and part of a needle of a phacoemulsification handpiece can be arranged in the image. An image evaluation unit evaluates the generated image in such a way that an evaluation variable is generated which is dependent on a property of a particle produced by phacoemulsification of the eye lens or is dependent on a relation of the particle to its surroundings. A control unit generates a control variable in dependence upon the evaluation variable and, with the control variable, the control unit controls an absolute value of ultrasound energy which is supplied to the phacoemulsification handpiece by an energy source for phacoemulsification of the eye lens.

Abstract: The present invention relates to a porous inorganic body comprising pores A having a pore size SA in the range of from 0.005 to 20 micrometer and a total pore volume VA, and comprising pores B having a pore size SB in the range of from more than 20 to 1000 micrometer and a total pore volume VB, wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is VC and wherein the ratio RA=VA/VC is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.

Abstract: A hammer mechanism is provided, which has at least one impact-generation unit which includes a strike element, a clamping chuck drive shaft mounting the strike element in movable manner in the strike direction in at least one operating state, and a coupling unit which is connected to the clamping chuck drive shaft in torsionally fixed manner and provided to drive the impact-generation unit.

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: A control device for a laser system with a laser for introducing a cut into tissue of a human or animal eye, wherein the control device is set up to arrange and move a focal point of a laser beam of the laser within the tissue. The control device includes an actuator configured to move the focal point along a continuous cutting path starting from a starting point arranged within the tissue between the starting point and an outer edge of the tissue in order to dissect the tissue into at least one continuous tissue strand.

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 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 hand-held machine tool includes a gear unit and a torque clutch that has a torque-limiting coupling allocated to the gear unit and that is assigned at least one spring element which is clamped between a limit-transfer element and a spring-holding element, and which is designed to apply a predefined spring force to the limit-transfer element axially in the direction of the torque-limiting coupling. The spring-holding element includes at least one opening, through which the at least one spring element reaches, at least sectionally.

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 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 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.