Abstract: An implantable prosthesis having at least two portions which are displaceable relative to each other, in particular a prosthesis for the upper end of a human upper arm comprising a shaft which can be inserted into a bone passage and a dome-shaped joint head which is to be associated with the adjacent joint head and which can be connected to an end face of the shaft in an eccentric position or a neutral position relative to the center axis thereof by means of an intermediate disk which has a circular periphery and which comprises both in relation to the joint head and in relation to the shaft a respective insert pin or the like peg-shaped portion formed thereon which can be inserted into a bore, wherein the mutually displaceable portions of the prosthesis are arranged steplessly displaceably relative to each other at at least one displacement plane which is determined by the surface of a portion about axes which are determined by the insert pins of the intermediate disk.

Abstract: A motor vehicle door having a door inside part (19), a door outside part (20) and a supporting panel (3) which is connected in a tight-fitting manner to the door inside part (19).

Abstract: A spacer grid for nuclear fuel assemblies is disclosed. This spacer grid has a plurality of side weld supports, that is, main supports, upper sub-supports and lower sub-supports, on its interlaced inner straps, with two flow mixing vanes integrally extending upward from each of the main supports. This spacer grid is fabricated by seam-welding the interlaced first and second inner straps to each other along the upper axial junction lines of the crossing main and upper sub-supports at the top of the intersections, and along the lower axial junction lines of the crossing lower sub-supports at the bottom of the intersections, thus forming side weld lines at the intersections.

Abstract: The present invention relates to a method for preparation of the supersaturated calcium and phosphate ions solution and a method for preparation of the thin film of calcium phosphate crystal on solid surface by using the said solution. Particularly, the lowered temperature and/or the use of suitable buffer system inhibit the nucleation of calcium phosphate in aqueous solution, and thereby highly supersaturated calcium and phosphate ions solution can be prepared. And the thin film of calcium phosphate crystal on solid surface can be prepared with rapidity and good quality of high reactivity and low crystallinity by using the said solution. Also the thin film of calcium phosphate crystal prepared according to the present invention has biocompatibility and can be applied as biomaterials.

Abstract: A process for selective removal of a nickel alloy brazing composition from a nickel-base alloy component includes the steps of providing a brazed assembly including nickel-base alloy components joined by nickel alloy brazing composition; immersing the assembly in an electrolyte; and applying a potential across the electrolyte at a magnitude wherein the nickel-base alloy components are electrochemically passive and the nickel alloy brazing composition dissolves whereby the brazing composition is removed from the components.

Abstract: The present invention relates to a scram jet engine for use with a hypersonic vehicle. The scram jet engine has an upper boundary wall, a lower boundary wall, and a plurality of side walls defining an inner air flowpath. The walls are formed by a plurality of tubular heat exchanger panels. Each of the heat exchanger panels comprises a plurality of structural panels, each having a plurality of cooling passages, joined together. In the scram jet engine of the present invention, fuel may be used as a coolant and supplied to the cooling passage.

Abstract: A spacer grid for use in a nuclear fuel assembly has double-deflected vanes that guide an axial flow of coolant around fuel rods and thereby generate swirl flow. The vanes each have a double bend projecting upwardly from first inner straps and projecting toward one fuel rod. The vanes are sufficiently wide at their bases to prevent inadvertent deformation due to contact with fuel rods during an insertion of fuel rods into the cells. The vanes also make a smooth variation in the cross-sectional area of the coolant channel at the outlet of the spacer grid, thus reducing a loss of pressure during reactor operation.

Abstract: A parenteral catheter apparatus (40) comprises a catheter (18) enclosing a needle (20). The needle (20) and catheter (18) have a first position in which a sharp point (22) of the needle (20) extends from the catheter (18) and a second position in which the sharp point (22) is enclosed within a housing (12). Further, a tubular member (15) is connected to the needle (20). The tubular member (15) has a connection means (17) for connection to a fluid container. Thus, fluid can flow through the tube (15) and the needle (20) and in the reverse direction The needle (20) remains in a fluid pathway of the apparatus at all times.

Abstract: A device for compensating the inertia forces in reciprocating piston machines consists of a balance shaft housing (5) and of balance shafts (6, 7) mounted in the latter in friction bearings (30) and having compensating weights (8), the balance shaft housing (5) being fastened in one part and to the engine block. In order to achieve the highest possible sufficient lubrication along with minimal production costs and simple assembly, a) the friction bearings (30) of the balance shafts (6, 7) are arranged, together with the main bearings (3) of the crankshaft (2), in a plane (9) perpendicular to the crankshaft axis, b) the friction bearings (30) are cylindrical bores in the balance shaft housing (5) which are machined as bearing surfaces (31), c) the balance shafts (6, 7) are cylindrical shafts of essentially constant diameter, on which the compensating weights (8) are fastened individually.

Abstract: The invention relates to a device for controlling an apparatus, for example an aircraft, an aircraft simulator, a robot or the like. Said device comprises a handle which can be rotated about two axes (A, B) that are perpendicular to one another. The handle pivots about a fulcrum (P) which substantially corresponds to a point of intersection (S) of the axes (A, B).

Abstract: The invention relates to a process for production of a sintered oxide ceramic of composition CexMyDzO2-a with dense structure without open porosity or with a predetermined porosity. The first doping element M is at least one element of the group consisting of the rare earths but M≠Ce, alkali and earth alkali metals. The educts are used with a second doping element D of at least one metal of the group consisting of Cu, Co, Fe, Ni and Mn, in the submicron particle size or as a salt solution, and sintered at a temperature in the range of 750-1250° C. into an oxide ceramic with extremely fine structure of a grain size of maximum around 0.5 &mgr;m.

Abstract: The present invention relates to self contained, modular integrated deployment and retrieval system for use with an aircraft such as a helicopter. The deployment and retrieval system comprises a support frame, a winch connected to the support frame, a tow cable wound around the winch, which tow cable is connected to the external load, and a support structure connected to the support frame. The support structure is axially movable relative to the support frame for moving the external load so as to control the center of gravity of the aircraft and so as to deploy and retrieve the external load.

Abstract: A process for monitoring the light intensity of an optical signaling or display device which has a plurality of light sources arranged on the front of a printed circuit board in a rasterized luminous field (F) and a diffusion lens arranged in the main light emission direction of the light sources or a light-collecting intermediate lens and a diffusion lens arranged in sequence, characterized by the process steps of using an at least partly transparent printed circuit board for arrangement of the light sources, arranging of sensors to detect light on the rear of this circuit board, detecting the light beams emitted rearwards towards the printed circuit board by the light sources and/or detection of the light beams reflected at the intermediate lens or, if this is omitted, at the diffusion lens and passing through the printed circuit board, conversing the detected light beams into signals which are passed to an electronic system, and initiating an action such as increasing the electrical power, advance warning

Abstract: A hollow element such as a turbine blade is manufactured by cutting a metallic member into first and second pieces so that each has a cut side and an opposite uncut side. The cut sides are machined to form interior features of the element. The uncut sides are machined to form exterior features of the element. The pieces are assembled with the cut sides facing each other and the assembly is diffusion bonded.

Abstract: A linked microcircuit for providing coolant gas flow through an aircraft part, comprising at least one inlet through which a coolant gas may enter, a circuit channel extending from the at least one inlet through which the coolant gas may flow wherein the circuit channel is formed from the superimposition of a plurality of alternating serpentine circuits, and at least one outlet appended to the circuit channel through which the coolant gas may exit the circuit channel.

Abstract: A spacer grid used for placing and supporting fuel rods in nuclear reactor fuel assemblies is disclosed. The spacer grid of this invention has a plurality of grid springs designed to have an optimal shape of their vertical support parts, thus reducing fretting wear of the fuel rods caused by contact of the fuel rods with the grid springs. The grid spring has a vertical support part and a fuel rod support part. The vertical support part includes upper and lower base parts extending downward and upward from the central portions of the top and bottom edges of an opening formed at the central portion of a unit strip, and two bridge parts branched from the upper base part and extending symmetrically downward until they are united at the lower base part. The fuel rod support part includes a conformal support part brought into surface contact with the external surface of a fuel rod.

Abstract: A method for loading an aircraft (R) with shipping containers (3), the latter being passed on conveyor members (13) into the interior of the aircraft (R) and rotated there in a loading area (8), the position of the shipping container (3) in the loading area (8) is determined and the conveyor members (13) are operated via a control system in accordance with the determined position to rotate the shipping container (3).

Abstract: A parallel, frequency domain filter (50) for providing frequency-dependent phase delay for real data includes a fast Fourier transform (FFT) device (52), a complex multiplier (54), a filter memory (56) and an inverse fast Fourier transform (IFFT) device (58). The FFT and IFFT devices (52) and (58) are shown with two inputs and two outputs each. The filter (50) of the present invention allows for increased throughput by filtering two real signals in parallel, one being applied to the real input of FFT device (52) and the other being applied to the imaginary input of FFT device (52). The filter memory 56 of FIG. 2 is provided with sufficient capacity to store several filter frequency characteristics. The appropriate filter frequency characteristic for the particular digitized rf signal being processed can be selected based on factors such as beam focus depth. The parallel, frequency domain filter (50) allows the use of coded waveforms to improve signal to noise ratio in ultrasound images.

Abstract: A combustor for a gas turbine engine is provided which includes a plurality of liner segments and a support shell. The support shell includes an interior and an exterior surface, a plurality of mounting holes, and a plurality of impingement coolant holes extending through the support shell. Each liner segment includes a panel and a plurality of mounting studs. The panel includes a face surface and a back surface, and a plurality of normal or inclined coolant holes extending therethrough. The back surface of the panel has a surface profile for improving the heat transfer properties of a liner segment without substantial increase in pressure drop across the combustor.

Abstract: A driver's cab of a commercial vehicle is supported by at least one support (8; 9) on a frame (1) by spring struts (10; 20) and, by means of a pair of swinging arms (11; 21), is supported on bearings (15; 16;25; 26) fixed on the frame. One end of the swinging arms are connected in an articulated manner to the support.