Abstract: A coating composition for the piston of an internal combustion engine comprises 10-30 wt. % of phenolic resin, 10-30 wt. % of epoxy resin, 10-30 wt. % of at least one solid lubricant selected from the group consisting of graphite, MoS2, WS2 and BN, and 5-30 wt. % of Fe2O3 particles.

Abstract: A steel piston for an internal combustion engine includes an amorphous phosphate layer in at least one region thereof. On account of this layer the adhesion of an antifriction coating is improved.

Abstract: The invention relates to a coating composition for the piston of an internal combustion engine. The composition comprises 10-30 wt. % of phenolic resin, 10-30 wt. % of epoxy resin, 10-30 wt. % of at least one solid lubricant selected from the group consisting of graphite, MoS2, WS2 and BN, and 5-30 wt. % of Fe2O3 particles.

Abstract: Disclosed is a coating for reducing or preventing hot-gas oxidation of the piston in an internal combustion engine. Said coating comprises a polysilazane-based polymer.

Abstract: Cutting insert made of hard metal, cermet or ceramic substrate body with multi-layer coating applied thereto by CVD methods. The coating has a total thickness of 5 to 40 ?m and, starting from the substrate surface, has one or more hard material layers, an alpha aluminum oxide (?-Al2O3) layer of a layer thickness of 1 to 20 ?m and optionally at least portion-wise over the ?-Al2O3 layer one or more further hard material layers as decorative or wear recognition layers. The ?-Al2O3 layer has a crystallographic preferential orientation characterized by a texture coefficient TC (0 0 12)?5 for the (0 0 12) growth direction. The ?-Al2O3 layer has an inherent stress in the region of 0 to +300 MPas, and the substrate within a region of 0 to 10 ?m from the substrate surface has an inherent stress minimum in the region of ?2000 to ?400 MPas.

Abstract: Cutting insert made of hard metal, cermet or ceramic substrate body with multi-layer coating applied thereto by CVD methods. The coating has a total thickness of 5 to 40 ?m and, starting from the substrate surface, has one or more hard material layers, an alpha aluminium oxide (?-Al2O3) layer of a layer thickness of 1 to 20 ?m and optionally at least portion-wise over the ?-Al2O3 layer one or more further hard material layers as decorative or wear recognition layers. The ?-Al2O3 layer has a crystallographic preferential orientation characterised by a texture coefficient TC (0 0 12)?5 for the (0 0 12) growth direction. The ?-Al2O3 layer has an inherent stress in the region of 0 to +300 MPas, and the substrate within a region of 0 to 10 ?m from the substrate surface has an inherent stress minimum in the region of ?2000 to ?400 MPas.

Abstract: A hand held communications device is provided. The device includes: a circuit board including electronic components; display coupled to the circuit board; a housing substantially surrounding the circuit board and electronic components, wherein the housing includes a base element covering a bottom side of the circuit board and electronic components and a housing element attached to the base element covering a top side of the circuit board and electronic components, wherein the housing element includes a display aperture with the display partially projecting therethrough; and a cover removably connected to the housing by a connection, wherein the cover and the base element substantially enclose the housing element therebetween.

Abstract: An electronic radiotelephone comprising: a first housing; a second housing releasably attachable to the first housing to meet with the first housing around the periphery of the radiotelephone; and retaining means comprising a cover for holding the electronic components of the radiotelephone to the first housing when the second housing is released from attachment with the first housing.

Abstract: A hand held communications device is provided. The device includes: a circuit board including electronic components; display coupled to the circuit board; a housing substantially surrounding the circuit board and electronic components, wherein the housing includes a base element covering a bottom side of the circuit board and electronic components and a housing element attached to the base element covering a top side of the circuit board and electronic components, wherein the housing element includes a display aperture with the display partially projecting therethrough; and a cover removably connected to the housing by a connection, wherein the cover and the base element substantially enclose the housing element therebetween.

Abstract: An electronic radiotelephone comprising: a first housing; a second housing releasably attachable to the first housing to meet with the first housing around the periphery of the radiotelephone; and retaining means comprising a cover, for holding the electronic components of the radiotelephone to the first housing when the second housing is released from attachment with the first housing.

Abstract: Electronic organiser (10) with a calendar (11) in which appointments at least according to date, time and an individual description, for example a person to be visited, are variable. If the organiser (10) is provided with an interface (22) which can exchange data in respect of the appointments with an interface (22) existing on another device (21), the data recorded in the calendar (11) can be used to run the other device or the electronic organiser (10) can be controlled by the other device. Thus for example data recorded in the calendar (11) can be used by a navigation system for faster input of the destination, or for example departure appointments can be changed by the other device according to the traffic or other situations.

Abstract: An optical spectrometer comprises at least two coupling apertures with different mode field diameters, a means for dispersing the light beams exiting each of the coupling apertures along a dispersion axis and at least two decoupling apertures on which the dispersed light beams are imaged and whose mode field diameters each correspond to the mode field diameters of the associated coupling apertures. Due the enlarged mode field diameter, a larger spectral fraction of dispersed light beams, i.e., light of a larger spectral bandwidth, can be coupled into the decoupling aperture than into the decoupling aperture.

Abstract: The invention relates to an electronic device having a housing (1) which has a housing wall (5) with openings (7) for control elements (8) and/or display elements (9, 10). Attachment means (11) for detachably connecting to the housing (1) an external wall element (14) which at least partially covers the housing wall (5) being present on the housing (1), the external wall element (14) having openings (7?) which are aligned with the openings (7) in the housing wall (5). As a result, by using different external wall elements (14) the external appearance of the electronic device can be easily modified.

Abstract: In a light waveguide, the one end of which comprises a flat entering area for the light to be coupled into the core of the light waveguide, the entering area is narrower than the core diameter of the light waveguide and, around the entering area, the end of the light waveguide is laterally sloped up to the entering surface. Only the light which impinges on this entering area passes into the core and is guided therein.

Abstract: An optical spectrometer comprises at least two coupling apertures with different mode field diameters, a means for dispersing the light beams exiting each of the coupling apertures along a dispersion axis and at least two decoupling apertures on which the dispersed light beams are imaged and whose mode field diameters each correspond to the mode field diameters of the associated coupling apertures. Due the enlarged mode field diameter, a larger spectral fraction of dispersed light beams, i.e., light of a larger spectral bandwidth, can be coupled into the decoupling aperture than into the decoupling aperture.

Abstract: An optical spectrum analyzer of novel design, in which several different spectra can be measured and analyzed simultaneously. A measuring signal is used as a reference signal for calibrating the optical spectrum analyzer. The light rays are admitted via a coupling device with several coupling apertures arranged in a line; and via a separate decoupling device comprising respective decoupling apertures arranged in a line, the light rays are decoupled. Height offset is realized by a 90° deviation prism. The arrangement makes possible simultaneous analysis of several optical lines with little retroreflection as well as uninterrupted calibration of the measuring process.

Abstract: A cradle that secures a removable device, a body, two side surfaces and two face surface are provided on one face surface, and a movable hook is provided on the other face surface. At least one of the surfaces which has a different designation than the surfaces on which the tabs and hook are located, is equipped with a button, one end of which is equipped with a first slide surface. A slider is provided whose one end has at least one second slide surface and whose other end engages the movable hook(s).

Abstract: In an optical spectrum analyzer, the respective wavelength bandwidths of the optical spectrum analyzer are determined at the wavelengths of the reference lines and used as calibration data for determining measurement tolerances by means of reference lines of known wavelength and known wavelength bandwidths from the known wavelength bandwidths of the reference lines and from the wavelength bandwidths of the reference lines measured with the optical spectrum analyzer

Abstract: An electronic radiotelephone comprising: a first housing; a second housing releasably attachable to the first housing to meet with the first housing around the periphery of the radiotelephone; and retaining means comprising a cover, for holding the electronic components of the radiotelephone to the first housing when the second housing is released from attachment with the first housing.

Abstract: The invention relates to an electronic device having a housing (1) which has a housing wall (5) with openings (7) for control elements (8) and/or display elements (9, 10). Attachment means (11) for detachably connecting to the housing (1) an external wall element (14) which at least partially covers the housing wall (5) being present on the housing (1), the external wall element (14) having openings (7′) which are aligned with the openings (7) in the housing wall (5). As a result, by using different external wall elements (14) the external appearance of the electronic device can be easily modified.