Abstract: An RFI through-let for screening signals transmitted between different components, for instance circuit boards, of which one component is arranged in a screened space, includes signal-transmission through-let capacitors which are mounted in a screen plate intended to be positioned in a rectangular opening in the side-wall of the screened space. The screen plate is comprised of a front part which includes a rectangular, generally flat plate having tongues or tabs disposed along the sides thereof and also having a central, rectangular hollow, and a holding part which is soldered firmly in the vicinity of the hollow of the front part. The holding part includes a flat plate whose long sides are bent to form guide flanges which extend perpendicularly downwards away from the front part, along a first line corresponding to the long sides of the opening, and along a second line downwardly of the first line are further bent inwardly towards one another.

Abstract: A conveyor coupled to a skid motor vehicle operates to unload bulk granular material from a railroad hopper car. The conveyor has an obtuse configured frame supporting an endless belt extended about an idler roller and a driven roller. A hydraulic motor mounted on the frame supplied with hydraulic fluid under pressure from the hydraulic system of the motor vehicle rotates the drive roller thereby moving the belt relative to the frame and mount thereon. A pair of transverse tubular box members are secured to the bottom of the frame to accommodate forks attached to the skid motor vehicle whereby the skid motor vehicle can lift the conveyor and transport it to another location.

Abstract: The provision of a flash memory, virtual mapping system that allows data to be continuously written to unwritten physical address locations. The virtual memory map relates flash memory physical location addresses in order to track the location of data in the memory.

Abstract: A method for real time message transmission in a token ring network is provided. The method initializes each node in the network, including setting a maximum message transmission time H.sub.i such that ##EQU1## is the transmission time of a message in a message stream, P.sub.i is the period length of the message stream, TTRT is the target token rotation time, and .tau. is the portion of TTRT that is unavailable to transmit messages. The messages are then transmitted when a token arrives at a node for the duration of H.sub.i. Using this method with the timed token protocol, the synchronous messages are guaranteed to be transmitted before their deadlines if the utilization of synchronous messages is no more than 33% of available utilization.

Abstract: A product useful in extinguishing fires and preventing explosions has a continuous sheet of metal foil having discontinuous slits arranged in a specified way, and in particular embodiments comprises magnesium alloys which may be coated with an oleate or an alkaline bichromate.

Abstract: A repeater system in a communication system including a base station and a mobile unit provides a communications link between the base station and the mobile unit when the mobile unit is located in an environment that is substantially closed off to high radio frequency communication between the base station and the mobile unit. The repeater system has a first linear two-way frequency converter including a high frequency port for two-way coupling to the base station and a low frequency port for two-way coupling to a low frequency signal that is capable of distributing radio frequency power through the closed environment. The low frequency port is connected to a cable which propagates and receives low radio frequency power within the closed environment.

Abstract: A combined mobile radio communication system comprises a first mobile radio communication system with a first geographic coverage area and with first base and mobile stations and allocated a first set of radio channels within a first frequency band for transmission from the first mobile stations to the first base stations and a second set of radio channels within a second frequency band for transmission from the first base stations to the first mobile stations. Included is also a second mobile radio communication system with a second geographic coverage area, which at least partially coincide with the first geographic coverage area, and with second base and mobile stations and allocated a third set of radio channels within a third frequency band, which at least partially coincides with the first frequency band, but is different from the second frequency band, for transmission both from the second mobile station to the second base stations and vice versa.

Abstract: A carrier for conveying components of a fuel cell to be sintered through a sintering furnace. The carrier comprises a metal sheet coated with a carbon-based paint, the carbon-based paint comprising an organic binder. The carbon-based paint may be an alcohol or a solvent-based paint or a water-based paint.

Abstract: Several embodiments are shown for a quick connect/disconnect microwave coaxial connector which is held together under magnetic force. In one embodiment, the ends of coaxial cables are provided with annular magnets and the end faces ground flat. A good low SWR coaxial connection is made and held by simply pushing the ends together. In another embodiment, ring magnets are employed to hold standard coaxial ends together while enabling their disconnection by pulling them apart. A magnetic adapter is used to facilitate coaxial connections.

Abstract: A digital multiplex system has a buffer, to which a bitstream arrives at one frequency and from which a bitstream is forwarded at a different frequency. The output bitstream frequency is controlled by a phase locking circuit comprising a phase comparator, a voltage controlled oscillator and a control circuit. The buffer generates control signals indicating the phase of the pulses in the incoming bitstream and the phase of the pulses forwarded therefrom. The phase comparator receives said control signals and delivers a signal representative of the mutual phase position of the pulses in the incoming and the forwarded bitstream, the signal being fed to the control circuit for automatic gain control. The control circuit controls the pulse rate of the voltage controlled oscillator, which generates clock pulses for clocking the pulses of the forwarded bitstream. The control circuit comprises a feed-back operational amplifier.

Abstract: A shopping cart security system assists in preventing the theft of a shopping cart from a parking lot of an establishment where the carts are used. The parking lot has at least one entrance and exit driveway. The system includes a magnet mounted on the shopping cart and an actuator buried below the surface of the driveway for generating a signal in response to passage of the cart with the magnet over the driveway. The actuator extends generally transversely with respect to and substantially completely across the driveway. An alarm issues a warning in response to the signal generated by the actuator. Also, a system for monitoring unauthorized entry into a restricted area having a door, a magnet carried by the door and an actuator controlled by the magnet for signalling opening of the door.

Abstract: Unique methods and apparatus are provided for deformation processing of advanced materials using this invention. Enhanced physico-mechanical properties are obtained by extrusion through a die assembly with two channels having equal cross sectional areas under near frictionless conditions. Also, large work pieces of advanced material can be intensively deformed by simple shear forces in a selected manner to produce the specific desired material characteristics. The results of applying the process to the working of cast metals, structure refinement and ductilization of brittle materials, structure-and texture-formation of the special alloys, and compacting of powder briquettes produces enhanced material characteristics in the finished product.

Abstract: A connector with fluid sealing including a male connector part having a rectangular body containing at least one contact pin. The outer peripheral surfaces of the rectangular body forming a male mating area. The connector further includes a female mating part containing at least one contact receptacle and having a rectangular opening adapted to receive the male connector part within the opening. The inner peripheral surfaces of the female connector part defining the rectangular opening forming a female mating area. A bead extends circumferentially around the entire periphery of one of the mating areas. The other of the mating areas has a groove extending circumferentially around the entire periphery and is adapted to receive the bead to create a fluid seal between the male and female connector parts.

Abstract: A cable connection between a PC and a sewing machine for transmitting data in the form of different voltage levels, wherein the cable connection for connection to the PC has an RS 232 C port and the sewing machine has a TTL port. A level converter is integrated in the cable connection, preferably in the connection jack to the RS 232 C port. The level converter has a switching transistor controllable by the sending pole of the TTL port and a switching transistor controllable by the sending pole of the 232 port for connecting the corresponding receiving pole to a voltage potential which it is able to receive.

Abstract: A method of manufacturing a web of fibers, especially a web of paper. The pulp is uniformly distributed through an outlet over the width of the machine and along a wire or between two wires. Most of the moisture is subsequently extracted from the pulp accommodated on or between the wires at a draining point. Various amounts of retaining agents are added to the pulp at sections across the headbox and the web in order to control the level of retention sectionally.

Abstract: The invention is directed to a sickleless internal gear pump including an internal ring gear and a pinion meshing with the ring gear. The internal ring gear and pinion having a common width and a plurality of teeth extending across the width. Each tooth has a tooth head with an involute profile. Each ring gear tooth includes a tooth head having a slot therein. The ring gear has a plurality of radial ports. A housing rotatably carries the internal ring gear and the pinion, and includes a suction port, a pressure port and an axial expanse corresponding to the teeth width. A plurality of sealing elements are respectively disposed in the ring gear tooth head slots. The sealing elements are radially movably disposed in the slots, and each sealing element defines an end face of the tooth head. The end face has an exterior profile corresponding to the involute profile. Each sealing element comprises a stop surface and a fixed stop.

Abstract: A firearm safety device including a tube assembly which is insertable through the barrel and/or and through a portion of the cartridge chamber. A stop assembly is disposed in the tube assembly. The stop assembly has a locking position and an unlocking position. In the locking position, a portion of the stop assembly extends a distance from an outer peripheral surface of the tube assembly for engaging a portion of the firearm and preventing removal of the tube assembly from the barrel and the cartridge chamber. A plunger is disposed in the tube assembly. One end of the plunger is engageable with the stop assembly for moving the stop assembly to the unlocked position. A blocking device is disposed in the tube assembly for preventing the plunger from engaging the stop assembly and moving the stop assembly to the unlocked position.

Abstract: In a packet switch, which is intended for packets of constant length, and which, between switch ports, is divided into a number of nodes (12) and transmission links (14), where the nodes carry out space selection and the transmission links offer point-to-point transmission between the nodes, link grouping is carded out. More particularly, from multiple parallel physical links coming in the switch, link groups are produced, each in the form of a logical link with a bandwidth that is the sum of the bandwidths of the physical links included in the link group, said logical link being restored to outgoing parallel physical links from the switch. One or more link protocols (G1,G2) are used according to which a label in the packet's header is made to describe a route that holds together the grouped links through the entire switch, such that bits in the label describing the route over a certain transmission link are the same for packets belonging to the same link group.

Abstract: A cam slide retainer for injection molds including an elongated rounded latch groove formed in the cam slide and a corresponding lock in the core retaining plate. The slide retainer is simple to install since the body portion of the lock is circular and is installed by press fitting into the core retaining plate from the back. A shoulder on the body portion is received in a counterbore to properly position the elongated rounded lock plunger head to extend above the inside surface of the core retaining plate. A flat key surface on the shoulder properly aligns the plunger head to extend transverse to the direction of the slide movement. The elongated rounded groove in the cam slide is positioned to matingly receive the elongated rounded plunger head when the slide is moved to the position away from the molded part to releasably lock the cam slide in position.

Abstract: Organic hydroperoxides are decomposed by drying a reaction mixture containing the organic hydroperoxide and an organic solvent and contacting the dried reaction mixture with a metal organic ligand catalyst under hydroperoxide decomposition conditions. An organic co-solvent for the hydroperoxide may also be used.