Abstract: A flow meter for a fluid with a pulsating flow includes a piezo transducer for receiving and converting fluid pulses into electrical pulses, a AC/DC converter circuit for cumulatively storing the pulse energies of the electrical pulses in an energy store, a counter for counting the electrical pulses during a time interval, an evaluation device for determining a pulse parameter indicative of the flow rate of at least one of the electrical pulses and for determining a flow value based on the electrical pulses counted within the time interval and the determined pulse parameter, a communication device for the preferably wireless transmission of the determined flow value and a power supply device for the exclusive power supply of the flow meter with the energy stored in the energy store.

Abstract: A flow meter for a fluid with a pulsating flow includes a piezo transducer for receiving and converting fluid pulses into electrical pulses, a AC/DC converter circuit for cumulatively storing the pulse energies of the electrical pulses in an energy store, a counter for counting the electrical pulses during a time interval, an evaluation device for determining a pulse parameter indicative of the flow rate of at least one of the electrical pulses and for determining a flow value based on the electrical pulses counted within the time interval and the determined pulse parameter, a communication device for the preferably wireless transmission of the determined flow value and a power supply device for the exclusive power supply of the flow meter with the energy stored in the energy store.

Abstract: A self-centering support for clamping and/or securing a workpiece on a turning lathe has a housing and three securing members connected in the housing and adjustable in a common plane for securing the workpiece. A first and a second one of the securing members are positioned laterally within the housing and are arranged mirror-symmetrically to one another. Each first and second securing members comprises a pivot bolt for pivotably connected them to the housing. A third securing member is positioned between the first and second securing members and is slidably guided within the housing so as to be radially displaceable relative to the workpiece. The third securing member has a center piece with control surfaces. The first and second securing members each have an end for operating with the control surfaces of the center piece.

Abstract: A foldable, warning triangle includes illuminating and audible alerting indicators to warn oncomers of vehicular accidents and other danger conditions. Flashing lights may be powered from self-contained batteries or from an external source such as an automobile battery and the flashing rate may be set by an internal timing circuit or may be derived from the collision-avoidance lamp of an automobile.