Abstract: A device for machining the ends of pipes, having a clamping device (6) for clamping the pipe in place, having an outer ring (9) and a shaping insert (11), in which the shaping insert has two half-rings (12, 13), which are releasably and resiliently connected to one another by means of at least one screw (34) and at least one spring (35). The tool is particularly compact, clean, safe and easy to handle.

Abstract: A device for preventing the unintentional restarting of motors or machines is proposed, it being possible to control the supply of energy to the motor or to the machine by means of a control valve with a mechanically adjustable control element and it being possible to connect the control valve non-detachably to the motor or to the machine, the energy for the motor being generated by means of compressed air, and in that a pneumatic piston, to which the primary air pressure prevailing upstream of the motor and upstream of the control valve can be applied, being arranged as a restarting inhibitor between the control valve and the motor, and in that, in order to apply the primary air pressure, a connecting line being arranged between the motor and the piston.

Abstract: A portable apparatus for machining pipe ends comprising a base plate for putting the apparatus on any desired base, an accommodating housing which is connected to the base plate and is intended for accommodating a drive arrangement and a gearing arrangement for driving a cutting tool and for accommodating a feed arrangement for feeding the cutting tool in the direction of a pipe end to be machined, a clamping device for clamping a pipe to be machined, a coupling arrangement for coupling the apparatus to a drive source, and a feed control device for controlling the feed of the cutting tool, a clamping lever being arranged such that it can be fastened in the clamping device so as to be movable from a first unclamped position into a second clamped position, and the clamping lever having an eccentric contour.

Abstract: A throttle valve for hydraulically or pneumatically operated tools is proposed, comprising a valve housing which receives a throttle part and is arranged between the tool and the power fluid line, a first and a second apparatus being arranged to be in operative connection with the valve housing, the second apparatus being arranged to be actuatable to regulate the drive only after an intentional actuation of the first apparatus to prevent inadvertent or unauthorized actuation, the first apparatus having at least a first release mechanism for initial unlocking and a second release mechanism for further unlocking, the release mechanisms being movable in two directions (x, y) extending perpendicularly to one another, and the second apparatus for regulating the drive being arranged to be movable in a direction of rotation (z) extending parallel to the x direction.

Abstract: A pipe cutting apparatus comprises at least one work-holding fixture and a cutting device pivotable about the axis of the pipe to be cut and having a cutting tool and drive. The cutting device is movable manually and/or by means of at least one transmission gearing for the feed of the tool about the pipe to be cut. The transmission gearing has a spur gear interacting with a crown gear.

Abstract: A pipe end machining unit (1) is provided with a housing (2) which is composed of two parts (2a, 2b). The clamping device (13) and the tool support (9) are supported in the upper housing part (2a). The lower housing part (2b) is of modular design and accommodates at least those components (18) which are relevant for controlling the motor. With a pipe end machining unit (1) designed in such a manner, conversion from an electrical drive to a pneumatic drive, or vice versa, is possible in a simple manner and within a very short time. Furthermore, the essential parts can be standardized, which results in major advantages from the manufacturing point of view.

Abstract: There is proposed an apparatus for machining pipe ends having a motor, a gearing assembly, and a clamping means for clamping a pipe end to be machined on the apparatus, the apparatus having a hollow rod, a tool support with a tool holder, characterized by the fact that the motor and the gearing assembly are arranged alongside of each other and that all units with the exception of the tool support are surrounded by a housing and thus form a compact and handy arrangement, and that the housing has a bottom surface which serves as standing surface and simplifies the handling of the device. The tool holder is provided with a cutting plate which is developed as turnable tip which has at least two active cutting edges.