Abstract: For machining lenses by a CNC lens cutting machine, relevant data in regard to eyes, spectacle frame, and lenses are entered in the computer that compares the optical data of lenses and frame openings. When the lens is too small, it is moved by calculation relative to the shape of the frame edge until it is completely within the lens. The computer checks whether the carried-out movement is within given tolerances and, if not, the lenses are rejected; if the tolerances are met, the computer checks whether the carried-out movement of one lens requires movement of the other in order to meet the tolerances. If this is so, the computer calculates the minimum movement and checks whether this movement is within the tolerances and, if not, the lens pair is rejected. If the tolerances are met, the computer drives the machine for machining the shape of the spectacle lenses.

Abstract: In a method for operating an internal combustion engine, wherein the internal combustion engine has a cylinder in which a combustion chamber is provided that is delimited by a reciprocating piston guided in the cylinder, wherein the piston is connected by a connecting rod to a crankshaft and wherein the internal combustion engine has a device for supplying fuel and a device for igniting the fuel/air mixture in the combustion chamber at least one engine speed value of the internal combustion engine is determined and evaluated. A pre-ignition state of the internal combustion engine is determined based on the result of the evaluation step.

Abstract: A blower apparatus has a blower housing having a blower intake. A motor-driven blower is arranged in the blower housing and takes in air in a flow direction through the blower intake into the blower housing. A device for mechanical clearing of the blower intake is arranged at the blower intake. The mechanical clearing device is driven in rotation during operation of the blower apparatus.

Abstract: The invention refers to a method and an apparatus for gathering flat printed products by selecting a single printed product from each of a multitude of collections of identical printed products and conveying the selected printed products towards a collecting conveyor (10), which runs along a generally straight line in a first direction (11).

Abstract: The absolute crankshaft angle of an internal combustion engine of a hand-held power tool is to be determined. The engine has a cylinder with a combustion chamber delimited by a piston that drives a crankshaft in a crankcase. The crankcase is connected by a transfer passage to the combustion chamber and the transfer port of the transfer passage is piston-controlled. Ignition takes place at an adjusted crankshaft angle. The energy supply unit of the engine is driven by the crankshaft and provides electric energy for ignition. The crankshaft angle is determined in that a signal generator is provided as an energy supply unit and generates an alternating voltage signal caused by a crankshaft revolution. An operating pressure signal of the engine is detected by a pressure sensor. The output signals of the pressure sensor and of the signal generator are linked with one another for determining the absolute crankshaft angle.

Abstract: A portable hand-guided power tool has a housing and a handle having a first leg and a second leg, wherein the handle is secured by the first and second legs to the housing such that the handle is pivotably connected by the first leg to the housing and the second leg is connected to the housing such that a pivoting movement between the handle and the housing is possible. A pressure spring is disposed between the second leg and the housing. A first pressure member is disposed at the handle and a second pressure member is disposed at the housing. The pressure spring is held with pretension between the first and second pressure members. The first pressure member has at least one hook element and, without the handle being mounted on the housing, the first pressure member is positive-lockingly hooked to the housing by engaging a receptacle of the housing so as to form a hook connection.

Abstract: A device for taking powdered substances has a storage receptacle and a supply tube having a first end for dispensing the substances and a pivotably supported second end that has a unitary cylinder wall pivotably mounted on a stationary cylinder body having a through bore. The supply tube is pivotable back and forth between a first position of non-use and a second position of use. In the first position, the substance is air-tightly closed off in the storage receptacle. In the second position, the substance enters the supply tube. The unitary cylinder wall has a through opening. The supply tube has an inner opening. In the first position, the inner opening of the supply tube and the through opening of the unitary cylinder wall do not communicate with the through bore of the cylinder body; in the second position, they communicate with the through bore of the cylinder body.

Abstract: A luminaire, in particular a wall or ceiling luminaire protected against sprayed or splashed water, for receiving at least one elongated gas-discharge lamp, having an enclosure able to be assembled into a closed form from a transparent lower part which can be mounted in a fixed position and which holds electrical gear and a transparent upper part, is so designed, with the aim of achieving a form for the upper part and lower part which is economical and meets the demands of the market and in which the two are matched to one another in relation to thermal stresses, that the lower part and the upper part are produced from the same batches of thermoplastic plastics material.

Abstract: A metallic object has a coating made of a thin metal oxide layer and nucleic acids or nucleic acid derivatives bonded thereto. The nucleic acid compounds have 5?-terminal or 3?-terminal molecule areas that are incorporated stably into the metal oxide layer. The unincorporated areas of the nucleic acid compounds that are not incorporated into the metal oxide layer are freely accessible for subsequent interactions with other molecules such as complementary nucleic acids having active ingredients attached thereto.

Abstract: A hand-held hammer drill has a housing, a tool spindle rotatingly driving a tool, a hammer action percussion-driving the tool, a swash plate drive driving the hammer action, and a countershaft driving as needed the tool spindle and the hammer action. A first bearing and an axial bearing are provided. The hub is rotatably supported in a cantilevered arrangement by the first bearing in the housing and coaxially surrounds the countershaft. The hub has a free cantilevered end and the axial bearing is disposed on the free cantilevered end, wherein the axial bearing axially supports the countershaft and has radial play relative to the countershaft.

Abstract: A safety device for the air in a room has an intake air channel for supplying outside air to the room. A device for air treatment is provided. A detector for air contaminants is arranged in the intake air channel. A safety closure with a drive is arranged in the air intake channel and has an open position and a closed position for airtightly closing the intake air channel or an inlet of the device for air treatment that is arranged downstream of the safety closure. An exhaust air channel is connected to the room and the device for air treatment. When the safety closure is in the open position, a partial recirculating operation occurs. When the safety closure is in the closed position, a complete recirculating operation is present. The device for air treatment, the detector, and the drive are connected to a control device.

Abstract: The furniture leg has a foot from which a lifting column projects transversely that comprises an external tube and an internal tube that is telescopingly movable relative to the external tube. The external tube is attached to a fastening part of the foot. In order to configure the furniture leg in such a way that the foot and the lifting column can be connected to one another such that deposit locations for dirt and the like are not formed, the exterior side of the external tube at least over most of its circumference passes continuously into the exterior side of the fastening part. In this way, at the transition from the foot to the lifting column no deposit location for dirt is formed. The furniture leg is suitable for tables of any kind, chairs, organ benches and the like.

Abstract: An ignition device for a motor unit with an internal combustion engine provided with a piston, a combustion chamber with a spark plug, a crankshaft driven by the piston, an intake port supplying combustion air to the combustion chamber, an exhaust for removing combustion gases from the combustion chamber, a signal generator driven by the crankshaft and emitting for one crankshaft revolution an alternating voltage signal, has an ignition unit that triggers a spark at the spark plug at a preselectable timing. The ignition unit is a module separate from the motor unit. An alternating voltage signal generated by the signal generator is supplied to the ignition unit as an information signal sufficient for operating the internal combustion engine. The alternating voltage signal is supplied to a first unit for energy processing and to a second unit for processing information for control of the internal combustion engine.

Abstract: A walk-in device for growing plants has a shelf system for receiving individual plants. An illumination device for illuminating the individual plants is provided. The shelf system is arranged about the illumination device that is centrally positioned within the shelf system. The shelf system is designed to position the individual plants such that the individual plants are oriented toward the illumination device. The individual segments of the shelf system are movable relative to the illumination device by rollers or on rails.

Abstract: An internal combustion engine has a cylinder with a combustion chamber delimited by a reciprocating piston that drives a crankshaft rotatably supported in a crankcase. The internal combustion engine has an intake passage, an exhaust connected to the combustion chamber, a device supplying fuel, and a control device controlling at least one operating parameter of the internal combustion engine. The internal combustion engine is operated in that a pressure is measured in operation of the internal combustion engine, an adjustable value for at least one operating parameter of the internal combustion engine is deteremined based on the measured pressure, and the determined adjustable value is set for optimized running of the engine.