Robert Boschgmbh

Richard Wolf Gmbh

Marko Liebler

Ulrich Wieduwilt

Sascha Bach

Lukas Oehm

Andre Gerlach

Peter Kimmich

Rainer Riedlinger

Karl Bendel

Johannes Henneberg

Markus Hinterkausen

Siegfried Ginter

Thomas Dreyer

Bernd Scheufele

An acoustic transducer, in particular for an ultrasonic sensor, is proposed. The acoustic transducer has a functional group, the functional group encompassing a diaphragm cup and at least one electroacoustic transducer element. The acoustic transducer furthermore has a housing. The diaphragm cup encompasses a vibration-capable diaphragm and an encircling wall, as well as at least one electroacoustic transducer element, the transducer element being embodied to excite the diaphragm to vibrate and/or to convert vibrations of the diaphragm into electrical signals. The diaphragm cup is constituted from a plastic material, the at least one transducer element being integrated into the vibration-capable diaphragm, the transducer element having an electrically active polymer.

Sound transducer, having a transducer element integrated in a vibration-capable diaphragm including an electrically active polymer

The invention relates to a cross seam joining device for a flexible packaging having at least one ultrasonic applicator (-), which is rotatably mounted on a shaft () and can be rotated about an axis () of the shaft () arranged longitudinally to the cross seam (). The ultrasonic applicator (-) is designed to produce and bundle ultrasounds in a frequency range of 0.1 MHz-0.5 MHz, preferably from 0.5 MHz-2 MHz.

Cross seam joining device for joining a sealing seam for a flexible packaging

The invention relates to a method for joining a sealing seam of a tubular bag packaging by means of an ultrasonic applicator (), characterized in that said ultrasonic applicator () generates ultrasonic waves at a frequency of between 0.1 MHz and 5 MHz, preferably between 0.5 MHz and 2 MHz. The invention also relates to a longitudinal seal joining device of a tubular bag machine for use with said claimed method.

Method for joining a sealing seam of a tubular bag packaging by means of an ultrasound applicator and longitudinal seal joining device for use with said method

A vehicle which is operable by a motor and/or muscular energy, in particular an electric bicycle, which includes an electric motor, a crankshaft drive having a first crank, a second crank, and a crankshaft, a torque sensor for detecting a torque applied by a rider at the crankshaft drive, and a control unit, which is set up to actuate the electric motor based on at least the values acquired by the torque sensor to drive the vehicle, the torque sensor being situated at the crankshaft drive and the torque sensor including at least one surface acoustic wave sensor.

Vehicle which is operable by a motor and by muscular energy and has an improved torque sensor

Local tissue areas should be thermally destroyed when using ultrasound thermotherapy. Traditionally, mono-frequency continuous wave ultrasound signals are used to this end. These lead to a non-optimal distribution of heat or to a non-optimal localization of the heating inside the tissue. In practice, the following dosage problem arises: the prevention of unwanted tissue damage in the tissue located in front of the target area while simultaneously having a sufficiently high damaging effect in the target area. The aim of the invention is to optimize the distribution of heat or to increase the localization of the heating. To these ends, modified transmitted signals (e.g. multi-frequency signals) are used that are adapted to a specific utilization of the non-linear ultrasound propagation and attenuation properties inside the tissue. This enables, while limited to the target area, a non-linear heating yield caused by non-linear ultrasound effects to be achieved that drastically improves the localization of the heating. Due to this optimization, the problem of dosage is substantially eased, and it is possible to thermally destroy even deep-lying tumors without unwanted burning of the tissue located in front of the tumors. This results in both improving the practical usability of ultrasound thermotherapy and in further reducing the side effects thereof.

Method for effecting local increases in temperature inside materials, particularly body tissue

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Bretten, Germany

Marko Liebler