Abstract: The invention relates to an aluminum alloy strip with improved surface optics, which is fabricated via hot and/or cold rolling, and consists of a type AA 3xxx, AA 5xxx, AA 6xxx or AA 8xxx aluminum alloy. The object of proposing an aluminum alloy strip that is suitable for attractive and precious surface optics despite the elevated percentage of alloy constituents is achieved in that, after degreasing, the finish-rolled aluminum alloy strip exhibits an increase in the luminance value L*(?L) in relation to the rolled-greasy state of more than 5 while measuring the color of the surface in the CIE L*a*b* color space using a standard illuminant D65 and a normal observation angle of 10°, excluding direct reflection in 45°/0° geometry.

Abstract: The invention relates to a method for producing a coated aluminum strip, in which the aluminum strip is unwound from a coil and fed into a unilateral or bilateral extrusion coating arrangement, the aluminum strip is extrusion coated with a thermoplastic polymer and after being extrusion coated, the aluminum strip is reheated to a metal temperature above the melting point of the thermoplastic polymer. The object of providing a method for producing an aluminum strip by which an extrusion-coated aluminum strip can be produced which can be processed at high processing speeds in follow-on composite tools is achieved in that the unilateral or bilateral plastics material coating of the aluminum strip is textured, after being reheated, using rolls which have a superficial structure.

Abstract: The invention relates to a method for producing a coated aluminium strip, in which the aluminium strip is unwound from a coil and fed into a unilateral or bilateral extrusion coating arrangement, the aluminium strip is extrusion coated with a thermoplastic polymer and after being extrusion coated, the aluminium strip is reheated to a metal temperature above the melting point of the thermoplastic polymer. The object of providing a method for producing an aluminium strip by which an extrusion-coated aluminium strip can be produced which can be processed at high processing speeds in follow-on composite tools is achieved in that the unilateral or bilateral plastics material coating of the aluminium strip is textured, after being reheated, using rolls which have a superficial structure.

Abstract: Use of an aluminium composite material consisting of at least one aluminium core alloy and at least one outer brazing layer consisting of an aluminium brazing alloy provided on one or both sides of the aluminium core alloy. Based on this prior art the object of the present invention is to provide a thermal joining process for an aluminium composite material, so that the use of fluxes can be dispensed with, this object being achieved in that the aluminium brazing layer of the aluminium composite material has a pickled surface and the aluminium composite material is used in a fluxless thermal joining process and the joining process is carried out in the presence of a protective gas.

Abstract: The invention relates to an aluminum alloy strip with improved surface optics, which is fabricated via hot and/or cold rolling, and consists of a type AA 3xxx, AA 5xxx, AA 6xxx or AA 8xxx aluminum alloy. The object of proposing an aluminum alloy strip that is suitable for attractive and precious surface optics despite the elevated percentage of alloy constituents is achieved in that, after degreasing, the finish-rolled aluminum alloy strip exhibits an increase in the luminance value L*(?L) in relation to the rolled-greasy state of more than 5 while measuring the color of the surface in the CIE L*a*b* color space using a standard illuminant D65 and a normal observation angle of 10°, excluding direct reflection in 45°/0° geometry.

Abstract: The invention relates to a method for producing a coated aluminium strip, in which the aluminium strip is unwound from a coil and fed into a unilateral or bilateral extrusion coating arrangement, the aluminium strip is extrusion coated with a thermoplastic polymer and after being extrusion coated, the aluminium strip is reheated to a metal temperature above the melting point of the thermoplastic polymer. The object of providing a method for producing an aluminium strip by which an extrusion-coated aluminium strip can be produced which can be processed at high processing speeds in follow-on composite tools is achieved in that the unilateral or bilateral plastics material coating of the aluminium strip is textured, after being reheated, using rolls which have a superficial structure.

Abstract: Recovery collar for pets comprising a disk-shaped flexible base body which comprises an opening, characterised in that the base body in the region of the opening is connected to a resilient soft sleeve, which encloses a portion of the neck of the pet.

Abstract: Recovery collar for pets comprising a disk-shaped flexible base body which comprises an opening, characterised in that the base body in the region of the opening is connected to a resilient soft sleeve, which encloses a portion of the neck of the pet.

Abstract: A laser being tunable in wavelength includes a first reflecting unit and a second reflecting unit, both reflecting units being arranged to at least partially reflect an incident beam of electromagnetic radiation towards each other, an optical path of said beam of electromagnetic radiation within said cavity, which is defined in length by said first and second reflecting unit, a dispersive device, which is arranged, such that a portion of said optical path of said beam of electromagnetic radiation traverses through said dispersive device, wherein said dispersive device comprises a dispersive characteristic representing a functional dependence of an optical path length of said portion with respect to wavelength of said electromagnetic radiation, wherein said optical path length increases with an increasing wavelength of said electromagnetic radiation.

Abstract: A wavelength tunable resonator includes a first reflector for reflecting a beam of electromagnetic radiation towards a second reflector, said second reflector for reflecting said beam back towards said first reflector, said first and second reflector defining a resonator having an optical path length, a gain medium for emitting said beam towards said first and second reflector, a prism, within said optical path, to filter a wavelength of said beam and to redirect a portion of said beam comprising said filtered wavelength towards said second reflector, wherein said second reflector is movable with respect to other optical elements within said resonator for increasing or decreasing said optical path length, and wherein said prism is rotatable about an axis with respect to said other optical elements within said resonator for adapting said filtered wavelength to said increase or decrease of said optical path length.

Abstract: The present invention relates to an electric motor having a high degree of protection against the ingress of foreign particles and moisture, in particular an electronically commutated external rotor DC motor, having a stator (1), having a rotor (2) and having an electronics housing (6) which extends transversely with respect to the motor shaft (3) and accommodates in its interior (4) a printed circuit board (5) having open-loop and closed-loop control electronics and commutation electronics. In this case, connection openings (6c) are located in a base (6b) of the electronics housing (6), connection elements (7), which connect the stator (1) and the printed circuit board (5) to one another, passing through the connection openings (6c), and a seal (8, 8a, 8c, 8e, 11, 12, 18, 24) seals at least the connection openings (6c) in the base (6b) of the electronics housing (6) through which the connection elements (7) pass.

Abstract: An apparatus and method of controlling an optical signal includes superimposing at least one optical reference signal and the optical signal to obtain at least one interference signal having an actual beat frequency, and pre-selecting one or more of the at least one interference signals using a predetermined bandwidth and a filter characteristic that is asymmetric with respect to an actual frequency of the optical signal, to determine a position of the optical signal relative to the at least one optical reference signal.

Abstract: A laser being tunable in wavelength a first reflecting unit and a second unit, both reflecting units being arranged to at least partially reflect an incident beam of electromagnetic radiation towards each other, an optical path of said beam of electromagnetic radiation within said cavity, which is defined in length by said first and second reflecting unit a dispersive device, which is arranged, such that a portion of said optical path of said beam of electromagnetic radiation traverses through said dispersive device, wherein said dispersive device comprises a dispersive characteristic representing a functional dependence of an optical path length of said portion with respect to wavelength of said electromagnetic 6radiation, wherein said optical path length increases with an increasing wavelength of said electromagnetic radiation.

Abstract: The present invention relates to an electric motor having a high degree of protection against the ingress of foreign particles and moisture, in particular an electronically commutated external rotor DC motor, having a stator (1), having a rotor (2) and having an electronics housing (6) which extends transversely with respect to the motor shaft (3) and accommodates in its interior (4) a printed circuit board (5) having open-loop and closed-loop control electronics and commutation electronics. In this case, connection openings (6c) are located in a base (6b) of the electronics housing (6), connection elements (7), which connect the stator (1) and the printed circuit board (5) to one another, passing through the connection openings (6c), and a seal (8, 8a, 8c, 8e, 11, 12, 18, 24) seals at least the connection openings (6c) in the base (6b) of the electronics housing (6) through which the connection elements (7) pass.

Abstract: The invention relates to a method of tuning a laser, comprising the steps of: providing a laser beam (4) in an external cavity (2) having a dispersion element (10) for selecting at least one mode of the laser, varying the wavelength characteristic of the dispersion element (10).

Abstract: A gain chip for a laser includes a stack of layers. The stack has a first layer with light emitting quantum nanostructures of a first center emission wavelength, and a second layer on the first layer with light emitting quantum nanostructures of a second center emission wavelength.

Abstract: The present invention relates to an apparatus and to a method of controlling an optical signal, comprising the steps of determining at least one actual beat frequency derived from a superposition of at least one optical reference signal with the optical signal having an actual frequency, and using the at least one actual beat frequency in order to control the actual frequency.

Abstract: A ski stick for use in particular in cross country skiing and having a sprung ski stick handle, which is fixed on the top end of a ski stick tube. The ski stick handle body is movable on the ski stick tube against a spring means arranged between the ski stick handle body and the ski stick tube in the direction of the ski stick tip.The ski stick handle is designed in such a way that the spring means which are arranged on the top ski stick handle fixing means, are resiliently stretchable rubber or plastic cords which run through the ski stick handle body toward the ski stick tip and are joined to the ski stick handle body at the bottom end thereof.