Abstract: A method for operating a hydraulically operated hand-held device is provided. The hand-held device includes a hydraulic pump, a moving part, a fixed part and a return valve with an associated valve seat. The moving part can be displaced into a working position by a build-up of hydraulic pressure produced by filling a hydraulic chamber with hydraulic medium from a storage chamber using the hydraulic pump. The moving part can be automatically moved back from the working position into an end position by opening the return valve, if a predetermined working pressure is reached. The hydraulic pressure acting upon the return valve for triggering a movement of the moving part into the end position is increased independently of reaching the predefined working pressure.

Abstract: A method of operating a hydraulically or electric motor operated tool includes providing a device shaft having electrical contacts; providing an accumulator having an adapter comprising a wall thereon; latching the adapter to the device shaft by a latching part; and engaging a tool with the latching part thereby detaching the adapter from the device shaft, whereupon during engagement of the tool with the latching part, the wall of the adapter is destroyed. When the device shaft and adapter are engaged, walls of the device shaft and adapter form an internal cavity and the latching part is positioned entirely therewithin such that the latching part is completely hidden from view. A hydraulically or electric motor operated tool is also disclosed.

Abstract: A method of operating a motor-actuated handheld pressing unit includes actuating a switch to initiate a pressing operation whereby one or more pressing jaws are moved from a starting position to a closed pressing position; automatically releasing the one or more pressing jaws by using a pressing piston when a prescribed pressing force has been reached, the pressing piston being actuated hydraulically by a hydraulic medium; and checking the reaching of the prescribed pressing force by using a pressure sensor to detect the pressure of the hydraulic medium. In an embodiment, the release of the pressing jaws may be interrupted. In an embodiment, a motor moves the jaws from the starting position to the closed pressing position. In an embodiment, the pressing force is continuously measured on intervals of less than one second.

Abstract: The invention relates to a method for producing a nut which is rotationally connected to a flat part connecting section of a cable shoe, wherein the flat part connecting section has a passage opening, the nut has a sitting face which is at the bottom in the connected state, and a holder section extends on the nut from the sitting face further downward, wherein a tapered portion of the passage opening is formed by a holder material section which is preliminarily curved into the passage opening by deformation, and the holder material section is produced by a recess which is made in the flat part connecting section so as to surround the passage opening on a top side of the flat part connection section, which top side is associated with the sitting face.

Abstract: A handheld hydraulically actuatable crimping device includes a hydraulic piston that can be displaced in a cylinder against the force of a spring. The piston is connected to a crimping part by a piston rod in order to carry out a crimping operation. The piston includes first and second partial pistons with first and second partial application faces which can be acted upon with hydraulic medium that has the same hydraulic pressure. Both partial pistons are respectively connected to a first and a second crimping part. The second crimping part can at a greater traveling distance only be acted upon with the second partial piston. The second crimping part can be acted upon with both partial pistons over a first partial traveling distance that is defined by the displacement of the first partial piston from its initial position up to the point, at which it reaches a stop. The first crimping part is axially covered in its entirety by the second crimping part.

Abstract: The disclosure relates to crimping pliers configured to crimp cable lugs onto electrical conductors. The crimping pliers includes two crimping jaws which can be swiveled towards one another. In each crimping jaw, a crimping matrix configured with a plurality of different crimping dies over a circumference is rotatably mounted with respect to an axis of rotation. The crimping matrices are permanently coupled to each other via the gearing independently of a swivel position of the crimping jaws.

Abstract: A portable tool having a working head that is actuated by an electric motor and/or a hydraulic medium and has a working part. The working part is displaceable in a displacement direction and the working head is rotatable together with the working part in the circumferential direction with respect to the displacement direction. The working head is rotatable together with the working part hydraulically and by the motor. The working head has a segment mounted therein, the segment having a largest extension in the circumferential direction by a first angular amount, and that the rotation of the working head and the working part takes place in the circumferential direction by a second angular amount, wherein values of the first and the second angular amounts are different. Moreover, a method for operating a portable tool is provided using first and second hydraulic pistons.

Abstract: A motorized manually operated pressing tool, in particular a crimping tool, with a fixed holding part, in which at least one pressing jaw is pivotably mounted about a pivot axis. The pressing jaw forms a working area and an impingement region extending in the longitudinal direction of the pressing jaw. In order to carry out a pressing operation the impingement region can be acted upon with an impinging part that is movable relative to the impingement region. The impinging part is movable in the longitudinal direction of the impingement region by exertion of manual force and by a motor.

Abstract: A cutting device includes a mounting head, cutting tools and a bracing element. Each tool has a cutting edge having a recess with a substantially semi-circular contour for accommodating a portion of a workpiece. An engaging protrusion extends into each recess and has a foot circumferential angular range from 20 to 90 degrees. The engaging protrusions project into the recess by ? to 9/10 of its radius. The bracing element extends from one tool and has a surface for supporting the workpiece.

Abstract: An adapter is used to mount the cylinder to a fluid channel. The adapter is formed of a unitary wall including a first portion adapted to mount to the fluid channel, a second portion adapted to be engaged with a tool extending from the first portion, and a third portion extending from the second portion and seated within an inlet passageway of the cylinder. The third portion includes locking features for locking the adapter to the cylinder, and a sealing feature for sealing the adapter to the cylinder. The sealing feature is distal to the second portion such that when a torque is applied to the adapter, the sealing feature does not cause the adapter to shear. The cylinder and fluid channel may be capable of being swiveled relative to each other around the adapter, such swiveling may be up to 360 degrees and may be 360 degrees.

Abstract: An assembly includes a first punching jaw, a second punching jaw pivotally connected to the first punching jaw, a punching stamp provided on one of the punching jaws and a punching opening provided on the other of the punching jaws, and a handheld apparatus connected to the jaws. When said handheld apparatus is actuated, the first ends of the jaws move toward each other to effect a punching process.

Abstract: A motorized manually operated pressing tool, in particular a crimping tool, with a fixed holding part, in which at least one pressing jaw is pivotably mounted about a pivot axis. The pressing jaw forms a working area and an impingement region extending in the longitudinal direction of the pressing jaw. In order to carry out a pressing operation the impingement region can be acted upon with an impinging part that is movable relative to the impingement region. The impinging part is movable in the longitudinal direction of the impingement region by exertion of manual force and by a motor.

Abstract: The invention relates to a jaw pair for punching out holes or recesses, preferably in sheet metal parts, the jaw pair being connectable to a device (23) to be operated preferably hydraulically and being designed, for example, as a pivoting jaw pair, wherein a punch (8) is formed on one jaw and a punching opening (6) is formed on the other jaw. To provide an advantageous jaw pair for punching out holes or recesses, preferably in sheet metal parts, it is proposed that a stripper part (10) which is situated outside of an outer contour of the punch (8) in the punching direction is formed in the jaw having the punch (8) and is movable in relation to the punch (8).

Abstract: A cable lug or functional part in combination with a nut is provided. The cable lug or functional part has a tubular receiving portion for a cable, an integrally formed flat part connecting portion connected to the tubular receiving portion, the flat part connecting portion having a hole therethrough defined by a wall said hole having a central axis. The nut includes a body having an undercut. The nut is held captively and rotatably on the flat part connecting portion. The nut does not pass through the flat part connecting portion is held by a reshaped holding material portion of the flat part connecting portion which projects into the undercut. The reshaped holding material portion is accommodated in the undercut, and an axial clearance is provided between the reshaped holding material and the wall which defines the hole.

Abstract: A method for milling a cutout using a milling cutter in a workpiece is provided. A longitudinal axis of the milling cutter is positioned in a first orientation relative to the workpiece to contact a first side of the workpiece. An enveloping cylindrical surface of the milling cutter is then used to cut a cutout which has a plurality of peripheral edges and rounded corners. The milling cutter is then placed in a second orientation which is angled relative to the first orientation. Thereafter, the enveloping cylindrical surface and an enveloping axial surface of the milling cutter are used to further cut the rounded corners of the cutout to form sharp corners.

Abstract: The invention relates in first instance to a nut having a first part (11) which has a first through opening (O1), and having a second part (12) which has a opening (O2) having an opening contour, the parts (11, 12) being connected so as to be rotatable about a rotational axis (A) which passes through the openings (O1, O2), and the openings (O1, O2) being aligned with one another, in addition, the first opening (O1) on its inner face having a profile which extends in the peripheral direction and which is interrupted in the peripheral direction. In order to provide a nut which is quickly mountable on a threaded bolt, and which has a simple design that allows greater security against the nut coming off the threaded bolt, it is proposed that the opening contour of the second opening is non-circular. The invention further relates to a combination of a bolt (4) having a cross-sectional area with a nut (10).