Abstract: The invention relates to a marking and/or leveling device (1) comprising a light source (4) disposed on a pendulum (3) that can pivot relative to a housing (2). According to the invention, means are provided for accelerating (9) the pendulum (3) and/or a pendulum bearing (8) in a pulsing manner.

Abstract: The invention relates to a striking mechanism of a handheld electric power tool, in particular a percussion drill and/or percussion hammer, having a hammer cylinder, a piston mounted with a guide section inside the hammer cylinder in a longitudinally displaceable manner, and a piston outer guide on which a guide area of the piston is guided in a longitudinally displaceable manner. A piston end located outside the hammer cylinder comprises an overlap for overlapping an end area of the hammer cylinder, and the guide area at least partially belongs to the overlap or is affixed there.

Abstract: A power tool system has a power tool, a replaceable rechargeable battery unit for the power tool, and at least one coupling unit for charging the battery unit while being replaceably connected to the power tool; also a replaceable rechargeable battery unit for a power tool, a charger for charging a replaceable rechargeable battery unit for a power tool, and a power tool with a replaceable rechargeable battery unit are provided.

Abstract: The invention relates to a receiving and guiding device for receiving a work piece and for guiding a cutting tool, consisting of a receiving frame comprising a bearing surface for the work piece and a guide rail for the cutting tool, said guide rail being adjusted between a functional position and a non-functional position. In the functional position, the guide rail is located above the bearing surface in the receiving frame. Said device also comprises a support arm on which the guide rail is supported in the functional position. Said support arm and the guide rail can carry out a relative movement in relation to each other.

Abstract: An impact drill that includes a drive motor located in a motor housing, an impact mechanism, and a tool fitting. The tool fitting and the impact mechanism are components of a swivel device that is located such that the swivel device may swivel relative to the motor housing.

Abstract: The invention relates to a stationary, motor-driven underfloor saw (1), which is designed as a keyhole saw and can be displaced in the direction of the saw blade plane along the bench surface (13) as a trim saw. With respect to the position of the saw blade plane, said saw can be pivoted in relation to the bench (3) about an axis (50) that runs parallel to the intersection of the bench surface (13) and the saw blade plane.

Abstract: A hand-operated reciprocating power saw comprises a saw blade (3) carrying out a working movement and a foot plate (4) connected to the case (2) of the reciprocating saw, the lower side of said foot plate defining a contact area (21) facing the workpiece (13) to be treated. A guide element (5, 24) is integrated into the foot plate and projects beyond the contact surface of the foot plate, the guide element being intended for contact with a guide contour (20) of a template (12). The saw teeth of the saw blade are positioned at least approximately in the center of the guide element or are laterally offset from the center in relation to the longitudinal plane of sawing of the saw blade.

Abstract: A power tool system has a power tool, a replaceable rechargeable battery unit for the power tool, and at least one coupling unit for charging the battery unit while being replaceably connected to the power tool; also a replaceable rechargeable battery unit for a power tool, a charger for charging a replaceable rechargeable battery unit for a power tool, and a power tool with a replaceable rechargeable battery unit are provided.

Abstract: The invention is based on a handheld power saw, having a coupling means (10) for retaining and driving a saw blade (12), and having a guide assembly (14) for guiding an oscillating motion (16) of the saw blade (12). It is proposed that the guide assembly (14) includes at least one lateral bracing means (18, 18?) for shielding the coupling means (10) from shear forces acting on the saw blade (12).

Abstract: The invention is based in particular on a replaceable rechargeable battery unit (10) for a power tool having a coupling unit (12, 50) for charging it. The coupling unit (12, 50) is provided for charging the replaceable rechargeable battery unit (10) in the mounted state on a power tool (14).

Abstract: A stationary power drill has a drill unit disposed in a tool housing is connected to a base vertically adjustably via a guide column and is vertically adjustable along the guide column by means of a drive unit. The drive unit includes a rotating drive shaft, and a compensation spring element engaging the drive shaft and braced on the other end on the tool housing.

Abstract: An impact drill that includes a drive motor located in a motor housing, an impact mechanism, and a tool fitting. The tool fitting and the impact mechanism are components of a swivel device that is located such that is may swivel relative to the motor housing.

Abstract: The invention is based in particular on a replaceable rechargeable battery unit (10) for a power tool having a coupling unit (12, 50) for charging it, It is proposed that the coupling unit (12, 50) is provided for charging the replaceable rechargeable battery unit (10) in the mounted state on a power tool (14).

Abstract: A hand power tool has a housing, and a pistol-shaped handle which is supported on the housing displaceably substantially in a direction of a longitudinal axis of the hand power tool.

Abstract: A hand power tool has a housing provided with air inlet and/or air outlet openings, the openings are arranged in various regions of the housing and have different directions, and a cover is movably supported on the housing so as to close a part of the openings.

Abstract: Process for the preparation of 3-aminoalkanoic acid esters of the general formula: in which R is C1-6-alkyl and R1 is hydrogen, C1-6-alkyl or phenyl, or their salts, by catalytic hydrogenation of the corresponding 3-amino-2-alkenoic acid esters of the general formula: in which R and R1 have the above mentioned meanings. The hydrogenation is carried out in the presence of a strong acid and the salt of the 3-aminoalkanoic acid ester (I) and the strong acid formed is optionally converted into the free 3-aminoalkanoic acid ester (I) or into another salt in a manner known per se.

Abstract: A hand power tool has a housing, and a pistol-shaped handle which is supported on the housing displaceably substantially in a direction of a longitudinal axis of the hand power tool.

Abstract: A process for preparing 2-cyno-2-alkoxyacetamides of the formula: 1

Abstract: A method for producing alkoxy malonic acid dinitrites of general formula (I), wherein R1 means C1-6-alkyl or halogen-substituted C1-6-alkyl. The method involves converting the corresponding alkoxy malonic acid diamides of general formula (II), wherein R1 has the aforementioned meaning, by means of a dehydrating agent. The intermediate products of general formula (III), whereby the products are formed during dehydration.

Abstract: 1 The invention relates to a method for producing alkoxy malonic acid dinitriles of general formula (I), wherein R1 means C1-6-alkyl or halogen-substituted C1-6-alkyl. The method is characterised in that the corresponding alkoxy malonic acid diamides of general formula (II), wherein R1 has the aforementioned meaning, are converted by means of a dehydrating agent. The invention also relates to the intermediate products of general formula (III), whereby said products are formed during dehydration.