Abstract: A tool head for a pressing machine and a pressing machine for plastically deforming a tubular workpiece are described. In many applications, the tubular workpiece is a fitting. The tool head includes a base body, a fixed press jaw and a linearly movable press jaw. A spring element is arranged to preload the movable press jaw against a workpiece without plastically deforming the workpiece.

Abstract: A pressing machine is described comprising a drive with an output shaft for generating a rotational movement. The machine also comprises a transmission which is connected on the input side to the output shaft of the drive. The transmission is connected on the output side with a swash plate. The machine also comprises a pin which is in contact with the swash plate, so that the pin during a rotational movement of the output shaft of the drive, performs a stroke movement.

Abstract: Systems and methods are described for governing and monitoring operations of tools. The systems include a registration and control computer, one or more mobile devices, and one or more tools. The tools include electronic locking provisions which upon activation selectively enable tool operation.

Abstract: A hand-held pressing device is described. The pressing device can be used for crimping or cutting workpieces. The device has a housing and a tool holder for receiving a tool. A movably configured actuator is driven by an electric motor to actuate the tool. The device includes a planetary gear assembly for coupling an electric motor and the actuator.

Abstract: A pressing machine is described for plastically deforming a tubular workpiece, in particular a fitting. The pressing machine has a motor, and pressing jaws which are driven by the motor and can apply a force to the workpiece during operation. The pressing machine also has a power transmission unit coupled to the motor and the pressing jaws for transmitting power from the motor to the pressing jaws. The pressing machine also has at least one sensor unit for measuring at least one pressing parameter P and a controller which receives the currently measured value of the pressing parameter P from the sensor unit and determines therewith the pitch or slope of a press parameter curve K of the press parameter P. The controller terminates a pressing operation before reaching a maximum possible pressing force Pmax when the pitch or slope of the press parameter curve K of the press parameter P satisfies a shutdown criterion. Also described is a corresponding method for operating a pressing machine.

Abstract: A coupling is described for connecting an interchangeable tool head to a machine part of a pressing device. The machine part features a receptacle region (A) for accommodating a shaft section of an interchangeable tool head, which can be axially displaced in the receptacle region (A), and the shaft section comprises an end face (S) and at least two engaging elements. The at least two holding elements are arranged in the receptacle region (A) and a guide groove is respectively formed between two adjacent holding elements. Also described are tools such as pressing devices utilizing the couplings and related methods.

Abstract: A hand-held hydraulic assembly includes a work tool having a hydraulic cylinder or main body, a ram piston disposed in the hydraulic main body and a spring or other biasing member mounted on the ram piston. An interchangeable work head is selectively engaged to the ram piston of the work tool. The ram piston is axially displaceable in the main body for actuating the work head. A quick release coupling mounted to the work tool releasably connects the interchangeable work head to the work tool.

Abstract: Systems and methods are described for governing and monitoring operations of tools. The systems include a registration and control computer, one or more mobile devices, and one or more tools. The tools include electronic locking provisions which upon activation selectively enable tool operation.

Abstract: A hand-held hydraulic assembly includes a work tool having a hydraulic cylinder or main body, a ram piston disposed in the hydraulic main body and a spring or other biasing member mounted on the ram piston. An interchangeable work head is selectively engaged to the ram piston of the work tool. The ram piston is axially displaceable in the main body for actuating the work head. A quick release coupling mounted to the work tool releasably connects the interchangeable work head to the work tool.

Abstract: A vascular catheter for cannulating arterial or venous vessels, for example in the fermoral region, or the vena cava and/or the right auricle of the heart, comprises a flexible tube having blood passage orifices in the nature of holes at its anterior and insertion end to be inserted in the vessel or the auricle, which tube is directly or indirectly connectable at its other open end to a conduit or appliance. A piston-like closure member is movable to and fro in the tube in lengthwise direction thereof, such that it covers and thereby closes at least same of the blood passsage orifices in one position in the tube and clears these orifices in other positions. Preferably, the closure member is so fashioned that in its closure position, it covers all blood passage orifices in the insertion end of the cathether tube.