Abstract: The present invention relates to a system for detecting a change in material composition in a product. The system comprises a microwave transmitter emitting a microwave signal at a predetermined microwave frequency composition, and an ultrasonic transmitter emitting an ultrasound signal at a predetermined ultrasound frequency composition into at least a part of said product to create a density displacement within the product. The system further comprises means to receive a microwave signal and/or an ultrasonic signal having passed through at least a part of said product, means to measure the attenuation and/or runtime between each emitted signal and each received signal, respectively, under the influence of the created density displacement, and means to compare the measured attenuation and/or runtime with a previously determined attenuation and/or runtime to determine a change in material composition.

Abstract: The present invention is related to a system for determining characteristics of a material. The system comprises means for sending and measuring microwave radiation, whereby the microwave radiation is used for determining the characteristics of the material 90. The invention is also related to such a method.

Abstract: The present invention relates to an apparatus for determining a dielectric function in an object. The apparatus comprises one transmit antenna (42) for transmitting microwave radiation through said object, and one receive antenna (43) for receiving the transmitted microwave radiation, one ultrasound transmitter for emitting ultrasound radiation through said object to generate a density variation in the object, means to analyse the microwave radiation transmitted through the density variation to determine the acousto-electric interaction ? in the object, and means to calculate the dielectric function in the object from the acousto-electric interaction. The invention also relates to a method for determining the dielectric function in an object.

Abstract: A device for measuring a distribution of selected properties of a material. The device includes an emitter configured to emit electromagnetic radiation at at least a first and second frequency in a selected frequency range through the material, at least one sensor configured to detect electromagnetic radiation transmitted through the material, and an analyzer configured to determine the distribution of selected properties based on the detected electromagnetic radiation at the at least first and second frequency. Further, the distribution of the selected properties is unchanged between the emitted electromagnetic radiation at the first and second frequencies.

Abstract: Disk (1, 11) for a force transmitting aggregate, in particular for wet disk clutch, with a core plate (2, 12) exhibiting a front side (V) and a backside (R), wherein the front side (V) and/or the backside (R) exhibits a friction lining (3v, 3r, 13v) which may be provided with grooves (4a, 4b, 5a, 5b, 5c, 14a, 14b, 15a, 15b, 15c). In accordance with the invention, in the case of a friction lining with an essentially planar surface (O3v, O3r, O13v) at least one surface area (6) is provided which is raised in comparison to this planar surface (O3v, O3r, O13v) and exhibits a spring characteristic. Alternatively thereto, it is envisioned in accordance with the invention that the cross-sectional area of the lining increases or decreases in the radial direction.

Abstract: The present invention relates to an apparatus for determining a spatial distribution of a physical parameter inside an object including at least two transmitters configured to transmit measurement signals, in which each measurement signal is one of an electromagnetic signal and an ultrasound signal, and at least one of the measurement signals induces a propagating change of the physical parameter. The apparatus also includes at least one receiver configured to receive at least one of the measurement signals so as to enable an analysis of the propagating change and determine the spatial distribution.

Abstract: Backing plate (11) of a disk assembly (L) of a force transmitting aggregate, in particular a multi-disk wet clutch (1) or a multi-disk wet brake, wherein the backing plate (11) is essentially ring shaped and in accordance with the invention comprises an essentially ring-shaped core plate (10) and an essentially ring-shaped backing shell (9), wherein the core plate (10) and the backing shell (9) are provided with adjacent surfaces and the backing shell (9) exhibits a profiling (P) about the circumference (UI, UA).

Abstract: The present invention relates to a device for measuring the distribution of selected properties of materials, said device comprises an emitter of electromagnetic radiation and furthermore at least one sensor of a first type. The emitter emits electromagnetic radiation in a selected frequency range towards said materials and a sensor of the first type detects electromagnetic radiation in a selected frequency range coming from said materials. The detected electromagnetic radiation having been emitted by said emitter. The device also comprises means to generate a three dimensional image contour information regarding the said material's position in space, and an analyser which (a) receives information from said sensors and (b) processes this information and (c) generates signals containing information about the distribution of said properties as output. The invention also relates to a system and a method for measuring the distribution of selected properties of materials.

Abstract: The present invention relates to an apparatus for determining a dielectric function in an object. The apparatus comprises one transmit antenna for transmitting microwave radiation through said object, and one receive antenna for receiving the transmitted microwave radiation, one ultrasound transmitter for emitting ultrasound radiation through said object to generate a density variation in the object, means to analyse the microwave radiation transmitted through the density variation to determine the acousto-electric interaction ? in the object, and means to calculate the dielectric function in the object from the acousto-electric interaction. The invention also relates to a method for determining the dielectric function in an object.

Abstract: A device for measuring a distribution of selected properties of a material. The device includes an emitter configured to emit electromagnetic radiation at at least a first and second frequency in a selected frequency range through the material, at least one sensor configured to detect electromagnetic radiation transmitted through the material, and an analyzer configured to determine the distribution of selected properties based on the detected electromagnetic radiation at the at least first and second frequency. Further, the distribution of the selected properties is unchanged between the emitted electromagnetic radiation at the first and second frequencies.

Abstract: The present invention relates to an apparatus for determining a dielectric function in an object. The apparatus includes one transmit antenna for transmitting microwave radiation through the object, and one receive antenna for receiving the transmitted microwave radiation, one ultrasound transmitter for emitting ultrasound radiation through the object to generate a density variation in the object, means to analyse the microwave radiation transmitted through the density variation to determine the acousto-electric interaction in the object, and a device to calculate the dielectric function in the object from the acousto-electric interaction. The invention also relates to a method for determining the dielectric function in an object.

Abstract: Backing plate (11) of a disk assembly (L) of a force transmitting aggregate, in particular a multi-disk wet clutch (1) or a multi-disk wet brake, wherein the backing plate (11) is essentially ring shaped and in accordance with the invention comprises an essentially ring-shaped core plate (10) and an essentially ring-shaped backing shell (9), wherein the core plate (10) and the backing shell (9) are provided with adjacent surfaces and the backing shell (9) exhibits a profiling (P) about the circumference (UI, UA)

Abstract: Disk (1, 11) for a force transmitting aggregate, in particular for wet disk clutch, with a core plate (2, 12) exhibiting a front side (V) and a backside (R), wherein the front side (V) and/or the backside (R) exhibits a friction lining (3v, 3r, 13v) which may be provided with grooves (4a, 4b, 5a, 5b, 5c, 14a, 14b, 15a, 15b, 15c). In accordance with the invention, in the case of a friction lining with an essentially planar surface (O3v, O3r, O13v) at least one surface area (6) is provided which is raised in comparison to this planar surface (O3v, O3r, O13v) and exhibits a spring characteristic. Alternatively thereto, it is envisioned in accordance with the invention that the cross-sectional area of the lining increases or decreases in the radial direction.

Abstract: The present invention relates to a device for measuring the distribution of selected properties of materials, said device comprises an emitter of electromagnetic radiation and furthermore at least one sensor of a first type. The emitter emits electromagnetic radiation in a selected frequency range towards said materials and a sensor of the first type detects electromagnetic radiation in a selected frequency range coming from said materials. The detected electromagnetic radiation having been emitted by said emitter. The device also comprises means to generate a three dimensional image contour information regarding the said material's position in space, and an analyser which (a) receives information from said sensors and (b) processes this information and (c) generates signals containing information about the distribution of said properties as output. The invention also relates to a system and a method for measuring the distribution of selected properties of materials.

Abstract: An annular friction-clutch facing (30) for a multi-disk clutch (10) includes an inner edge (32) and an outer edge (34) defining a width (w) of the facing (30). The facing (30) further includes a first group of grooves (136, 236) formed on the facing (30) and having first cross-sectional area. Each groove of the first group (136, 236) has a first opening (38) at the outer edge (34) and a second opening (40) at the inner edge (32) remote from the first opening (38) and is adapted to direct lubricating agents across the width (w) over a substantial area of the facing (30). The facing (30) further includes a second group of grooves (42) formed on the facing (30) and having a second cross-sectional area smaller than the first cross-sectional area. The second group of grooves (42) includes first and second sets of grooves (44, 46, respectively). The grooves of the first set (44) are disposed in intersecting relationship with the grooves of the second set (46).

Abstract: The present invention relates to an apparatus for detection of foreign bodies in materials, comprising a first antenna device for transmitting electromagnetic signals, the transmitted electromagnetic signals are in the microwave range, the signals comprise at least two signals at different frequencies, a second antenna device for receiving signals originating from the first antenna, where the received signals, at least partially, passes through the materials, device for measuring at least one parameter of the received signals for each frequency, so as to obtain parameter values, device for comparing the parameter value with the corresponding output parameter value of the transmitted signals, so as to obtain a comparison value for each of the frequencies, device for analyzing each comparison value based on a reference value, which reference value is accessible to the apparatus, and device for emitting a signal when the comparison value differs a predetermined amount from the reference value.

Abstract: A multiple-clutch assembly includes a housing and a first clutch having a first drive member rotatably supported within the housing on a drive hub and a first driven member rotatably supported within the housing on a first driven shaft. A first clutch pack is interposed between the first drive and driven members and operable to selectively connect and disconnect the first drive and driven members for transferring and interrupting torque between the first drive and driven members. A second clutch is supported within the housing coaxial with respect to the first clutch and includes a second drive member rotatably supported within the housing on the drive hub and a second driven member rotatably supported within the housing on a second driven shaft. The first and second driven shafts are disposed concentrically relative to one another.