Abstract: The piston (1) has a ball receptacle (14) for the rod head (4) of the piston rod (2) of a swash plate compressor. For absorbing particularly high pressures the rod head (4) has a relatively large diameter, so that the ball receptacle (14) extends close to the circumference of the piston (1). The piston wall (15) laterally surrounding the rod head (4) has a circumferential indentation (21) which, in the inwards direction, forms an uninterrupted undercut enclosing the spherical rod head (4).

Abstract: A method and device for electrically connecting enameled wire ends with contact surfaces. The enameled wire is stripped and pressed against the contact surface. The wire is charged with at least one of an electromagnetic and an acoustical energy. The enamel layer of the wire end is destroyed with the first energy in a first step. This is accomplished by charging the region with at least one of a first electromagnetic energy and a first acoustical energy. The enamel layer of the wire end is only partially destroyed in the first step through the pressing of a region of the wire end against the contact surface with a first pressing force. The wire is permanently connected to the contact surface with a second energy in a further step. The same region of the wire is pressed against the contact surface with a second, lower pressing force in the subsequent process step. It is charged with a second energy and connected to the contact surface so as to conduct electricity.

Abstract: A method for controlling a variable turbine geometry of an exhaust gas turbocharger which supercharges an internal combustion engine for driving a motor vehicle. The turbine geometry is set as a function of the operating load of the internal combustion engine between the opening position in idling and the closed position in full load operation. The turbine geometry is brought into an operating position predetermined for the prevailing load point. To improve the non-steady-state operating performance of the exhaust gas turbocharger and the internal combustion engine, in particular during long acceleration phases of the motor vehicle, the turbine geometry is guided during a switching pause for changing gear levels of the motor vehicle into a switching pause position which is independent of the operating load. In the switching pause position a reduced flow cross section of the turbine for the exhaust gas stream is set.

Abstract: The invention concerns a cooling body having at least one cooling duct for receiving a cooling medium which is fed to the cooling duct at a predetermined speed, the cooling duct comprising a plurality of stall centers.

Abstract: A track-guided transport system with power and data transmission and used for conveying goods. The transport system is provided with a transport element having drive and track-guide elements; storage, input and output units for goods; and a data processing and transmission unit. The transport element is provided with a transmission head as a secondary element for transferring power from a primary circuit laid along the track, the transmission head is mounted on the vehicle comprising a ferrite core and a secondary winding surrounding the core and magnetically is coupled to the primary circuit. An adjustable and controllable drive unit may be provided for forward motion; and a device may be provided for the forward motion for low-friction compensation of gravity and to ensure low-friction sliding along a track, as well as track-guide elements.

Abstract: The present invention is directed to a profile for a truck floor, particularly for a bridge or troughed floor, that comprises at least one web with a lateral surface facing toward the load, whereby at least a region of the profile adjoining the lateral surface is particle-reinforced, and is also directed to a dumpster floor formed therefrom.

Abstract: A new vehicle electrical system has a first lower voltage level and a second higher voltage level. The new vehicle electrical system comprises an ignition switch, a generator having an exciter circuit and a voltage controller, and a multi-chopper having several chopper stages. The voltage controller supplies energy to the exciter circuit via the ignition switch in order to adjust the first lower voltage level to a rated level of U1. The multi-chopper is connected between the battery and the generator, thereby adjusting the second higher voltage level to a rated level of U2 based on the number of chopper stages and their actuation.

Abstract: The invention relates to a cooling body comprising a heat-conducting insulator and having lugs that are attached in the interior of the cooling body.

Abstract: A two-wheeled running gear for a track-guided vehicle comprising a running gear frame; a wheel carrier; first and second wheels coupled to opposite sides of the wheel carrier; first and second vertical pivot pins, the first vertical pivot pin coupled to the first side of the wheel carrier and movably connected to the first side of the running gear frame, the second vertical pivot pin coupled to the second side of the wheel carrier and movably connected to the second side of the running gear frame, the first and second wheels located between the first and second vertical pins; and means for controlling a movement of the first pivot pin relative to the running gear frame such that, during a curved track drive, the first pivot pin can be held substantially in place relative to the running gear frame while the second pivot pin can move relative to the running gear frame so that the line connecting the centers of the wheels is maintained substantially parallel to the radius of curvature of the track.

Abstract: The apparatus is an electromagnetically actuated lock which has a movable part, which is prevented from rotation or displacement by a barring bolt that extends into a recess of the movable part. Locking pins extend into the barring bolt and which locking pins positively lock the bolt in the withdrawn or retracted position when access is authorized and which locking pins also positively lock the bolt in the extended position when access is unauthorized.

Abstract: In a vehicle having an automatically actuatable clutch arranged in the drive train between engine and transmission, the clutch is released or maintained released in the event of a brief interruption in the power supply to the clutch control device while activation of the clutch control device still exists.

Abstract: A process for manufacturing a ceramic metal composite body in the case of which a dimensionally stable and porous sacrificial body is produced from ceramic initial products and is filled at a filling temperature with a softened metal, particularly under an increased pressure. The filled sacrificial body is heated to a reaction temperature and the metal to be filled in, BMe, is reacted with a metal of the ceramics. KMe, forming the ceramic metal composite body which has a ceramic phase having KMe.sub.m B.sub.x and/or KMe.sub.n C.sub.y and/or KMe.sub.o CN and BMe.sub.p O.sub.3 and has a metallic phase having an intermetallic compound which is formed of KMe and BMe, the filling temperature being lower than the reaction temperature and higher than or equal to the softening temperature of the metal.

Abstract: The invention relates to a semiconductor device which includes a packaged electrical component such as an IC chip, wherein terminal posts are realized within the chip area without additional wafer surface being required beyond the chip edge. A direct feedthrough of the individual electrical connections by way of downwardly extending terminal posts that are connected to bonding pads at the top of the chip results in a small lead length and thus lesser parasitic influences, which in turn results in optimum conditions for use at super-high frequencies. Furthermore, a process for making the semiconductor device offers the option of forming deep vertical trenches on the chip edge and to thus implement separation etching for dicing. During this process, the coverage of the side surface with encapsulating material effects a passivation on the chip edge without further outlay. Expensive rewiring of the connections on the bottom side of the chip is not necessarily due to the terminal posts.

Abstract: This invention relates to a polymerizable phosphazene derivative with a general structural formula.brket open-st.NP(A).sub.a (B).sub.b).brket close-st..sub.xwherein the groups A and B are bonded to phosphorus atoms through --O--, --S--, --NH--, or --NR-- (with R=C.sub.1 -C.sub.6) alkyl), and wherein A stands more precisely for a vinyl ether group or a styrene ether group, and B stands more precisely for a hydrocarbon group. The invention also relates to procedures for synthesizing such phosphazene derivatives. The phosphazenes derivatives of the invention can be cured by a process that is initiated cationically, which leads to a large number of advantages. The phosphazene derivatives of the invention can, in particular, be used as curable binders for paints, coatings, fillers, mastics, adhesives, moldings, or films. Paints or coatings comprising the phosphazene derivatives of the invention show especially high mechanical resistance and scratch resistance.

Abstract: The invention concerns heterostructure field effect transistors (HFET's) with high charge carrier concentration in the two-dimensional charge-carrier gas. The n-HFET of the heterostructure layer sequence contains several zones with formed 2DEG while the p-HFET contains several zones with formed 2DHG, which can be gate-controlled with a transistor gate, without mutually screening each other. At the same time, more charge carriers n.sub.s with high mobility are available through several channels. Higher transconductances for transistors are obtained with this, resulting in the promise of shorter switching times, especially for integrated circuits. In addition, other characteristics that are critical for the high-frequency technology, such as transit frequency and maximum operating frequency, can also be increased.