Abstract: A locking system for an automobile, comprises an operating key, an operating key receptacle and an associated operating unit. The operating key and the operating key receptacle have first means for transmitting a first coded operating signal from the operating key to the operating key receptacle. In addition, further second means are arranged in the operating key and in the operating key receptacle, for transmitting a second coded operating signal from the operating key receptacle to the operating key. The second operating signal cooperates with the first operating signal in a bidirectional communication in the manner of an alternating code, activation of the operating unit being made possible in the event of successful deciphering of the first transmitted operating signal.

Abstract: The process for producing high-T.sub.c superconductors containing thallium, calcium, barium and copper, possibly also lead and/or strontium, provides for a thallium-free precursor to be produced in a first reaction step and this to be then mechanically triturated, subsequently heated to temperatures in the range from 700.degree. to 950.degree. C. and heat treated for a period of at least 3 hours. The mixture is then cooled to ambient temperature and ground again. Finally, it is heat treated at temperatures of from 400.degree. to 500.degree. C. in a stream of pure oxygen. The thallium-free precursor is then triturated with Tl.sub.2 O.sub.3, if desired shaped into a shaped part and then oxidatively fired in a flowing gas atmosphere.

Abstract: A bus system for sensor modules includes at least one bus for interconnecting the sensor modules and for carrying signals between the sensor modules. Switching control devices are provided, a first one being a bus master device for the at least one bus having bus logic control for controlling the transmission of signals over the at least one bus. A superordinate main bus is provided for connecting the switching control devices together and for transmitting signals between the switching control devices. The at least one bus is connected with the superordinate main bus by the bus master. Binary switching signals transmitted over the at least one bus are detected by the sensor modules, and/or processed by the sensor modules. The sensor modules contain integrated bus logic for converting the binary switching signals into bus signals and vice versa. The at least one bus has a single common data line to which the sensor modules are connected for serial data transmission.

Abstract: Connector box for shielded cables comprising upper and lower base parts and a printed board held between the upper and lower base parts. There is at least one jack and a terminal connector mounted on the printed board are conductively connected to each other by way of the printed board. The connector box is characterized in that the lower base part and upper base part form a housing and are die cast metal parts, and wherein the upper base part is seated by its peripheral edge on the lower base part in an electrically conductive manner. The housing encloses and shields at least the jack and a portion of the printed board. A structure is provided for holding the shielding of a cable on one of the base parts in electrically conductive contact therewith.

Abstract: A method of cleaning and coating water conducting pipes is provided wherein a mixture of water and compressed air is forced through the emptied pipe system to rough clean such system, a pressurized acid is introduced into the pipe system and allowed to react with the interior surface of the pipes for a predetermined period of time. The acid is then drained from the pipes, and the interior of the pipes is dried by compressed air. A pressurized liquid plastic is then introduced into the pipes to coat the pipes with the excess plastic being subsequently drained from the pipe system.

Abstract: A durable, multiple-level, pile height is imparted to at least one surface of terry towelling, terry fabric or cut pile cotton fabric by treating the piles in predetermined areas of the surface with caustic paste and allowing the material to stand, with or without heating, so as to shrink and reduce the height of the caustic treated piles. The viscosity, the penetration period, and the manner of applying the paste are selected such that the ground layer of the material is substantially unaffected. The process is compatible with various dyeing techniques to obtain attractive color effects.

Abstract: Polymer-containing, crosslinked, durable press 100% cotton, high-cotton blend, and other cellulosic fabrics are given a durable pucker without steaming by treatment with a rewetting agent, followed by drying, printing with a caustic printing paste permitting the printed fabric to develop a pucker at room temperature in a substantially tension-free state, and washing. Alternatively, the application of the rewetting agent can be bypassed by adding compatible wetting agents directly to the printing paste. The present process is also compatible with pigment printing processes so that caustic printing and pigment printing can be combined, the cold-puckered fabric being dried and then heated to set the pigment vehicle.

Abstract: A polymer composition comprising a blend of: (a) a graft copolymer of a perfluorinated unsaturated compound, which only reluctantly homopolymerizes, on a backbone polymer, (b) a copolymer of said perfluorinated unsaturated compound with an ethylenically unsaturated comonomer, and (c) oligomers of said perfluorinated unsaturated compound. The polymer composition is made by dissolving a compound of the formula (R.sub.f --A).sub.n --PG wherein n is an integer of 2 or 3, R.sub.f is a perfluoroalkyl group of at least 3 carbon atoms, A is a linking group, and PG is a polymerizable group derived from fumaric and related acids, together with a backbone polymer, a comonomer which copolymerizes with the perfluorinated compound, and a free radical initiator in an organic solvent and polymerizing at 40.degree. C to 120.degree. C for .5 to 24 hours.The resulting stable polymer compositions are useful in imparting soil repellent properties to various substrates, especially textiles.

Abstract: A heat transfer assembly is provided having heat transfer elements which contact end portions of a pressure roller of a fuser assembly. A heat transfer fluid is caused to pass over the elements in response to a signal to remove heat therefrom thereby cooling such portions of the pressure roller in contact with the elements.

Abstract: A heat transfer assembly is provided having heat transfer elements which contact end portions of a pressure roller of a fuser assembly. A heat transfer fluid is caused to pass over the elements in response to a signal to remove heat therefrom thereby cooling such portions of the pressure roller in contact with the elements.

Abstract: A heat transfer assembly is provided having heat transfer elements which contact end portions of a pressure roller of a fuser assembly. A heat transfer fluid is caused to pass over the elements in response to a signal to remove heat therefrom thereby cooling such portions of the pressure roller in contact with the elements.