Abstract: A position display instrument for light spot display on a map of the position of vehicles, in particular aircraft or helicopters. The instrument comprises a flat map holder for accommodating and holding map sheets in an exact position, a light transmitter located below the map holder for producing a light spot on the map sheet and movable in two coordinates by positioning means, a microcomputer to which the grid coordinates of the vehicle position are applied from a navigational computer and by which the positioning means are controlled, a memory for storing map data, said memory cooperating with the microcomputer, and display means which is connected to the microcomputer and by which the map sheet or map field required for the respective grid coordinates is displayed.

Abstract: A portable surface processing apparatus which has two rotors (R.sub.1, R.sub.2) fitted with blades driven in opposite directions by a motor (M). The reaction forces arising in the processing therefore mutually cancel each other.

Abstract: An improved carburetor having a system for precisely metering fuel introduced into an internal combustion engine. The carburetor includes an air passageway and a throttle valve having a throttle opening movable across the air passageway to control the effective cross-sectional dimension of the air passageway. The fuel metering system includes an fuel metering tube extending across the air passageway in registration with the throttle valve. The metering tube is either connected to and movable with the throttle valve, or is stationary and extends through a complementary lateral aperture in the throttle valve such that the throttle valve is slidable upon the metering tube. A longitudinal fuel distribution outlet extends along one side of the fuel metering tube substantially across the width of the air passageway.

Abstract: A data processing network has a plurality of data processing stations which communicate over a bus. Each station is inductively coupled to the bus. Data is transmitted in a binary coded form in which a zero is represented by a pair of oppositely poled pulses and a one is represented by the absence of any pulse. The transmitter circuit includes an energy saving circuit for recovering energy from the backswing of each pulse. Preferably the bus consists of a twisted pair of wires.

Abstract: A device for cleaning the surfaces of a generally flat tape as the tape is wound into a tape cartridge. Spring-loaded jaws engage opposite sides of the tape and each jaw is provided with a scraping edge adjacent the tape to strip debris from the tape as it is rewound into the tape cartridge. The tips of the jaws interlock to prevent inadvertent release of the device from the tape. The device is removable from the tape whenever desired.

Abstract: A display/storage package for flat articles such as computer software discs, and a file for one or more display/storage packages. The display/storage package includes a bottom portion, a top portion complementary to the bottom portion, which, when engaged to constitute a closed package, form an internal compartment. The top and bottom portions are provided with corner assistance to aid in opening the package when closed. A hinge connects the top and bottom portions along one edge thereof and includes a longitudinal channel forming a guideway for a strip bearing indicia identifying the contents of the package. The file comprises a housing and a liner for the housing, with the liner including at least one pair of opposed grooves shaped to guide and retain the display/storage package within the file.

Abstract: An air-to-air guided missile with solid propellant rocket motor is retained by a locking device having a blocking device during a predeterminable delay time after the rocket motor has been fired. Thereby, at high altitude or with a high speed, such a proportion of the propellant can be burnt off that the guided missile is not accelerated to an inadmissibly high speed.

Abstract: An orthodontic device comprises a dental plate from plastic or the like adapted to be fitted to the jaw. One or more wire clamps may be fixed to the dental plate along its side edges and destined to be positioned around and/or between at least a number of molar teeth. An anchor is fixed to the dental plate along its front edge and destined to grip in fitting relation around at least a number of teeth. The anchor is formed from colorless transparent plastic that is connected integrally to the dental plate and fits closely against the front and rear side of all of the teeth of the jaw. At least the cutting faces of the incisors project freely through the anchor.

Abstract: A dental bondable lingual retainer including a plurality of bonding pads or bases interconnected by bar members or links and a method of making same, wherein the retainer is made from a sheet of fused metal foil and mesh, and the connecting bar members or links have the mesh filled with a suitable material for enhancing the strength of the bar members or closed by attaching a foil to the mesh side.

Abstract: A retainer for the laterally moveable slide of a mold for plastic parts. The retainer is positioned to hold the slide in a laterally offset position when the mold is open so that the mold can easily be reclosed without further adjustment of the mold parts. The retainer has a resilient, metal arm, a retention element at one end and a fastener passing through the other end to attach the retainer to a stationary part of the mold. The retention element engages the slide to hold the slide in place when the mold is opened.

Abstract: An unbalance vibrator having a shaft 2, with a flyweight 3 rigidly connected thereto, which shaft 2 is mounted in a bearing housing 1, comprises on both sides of this connecting flyweight movable flyweights 5 with flyweight bodies 6 nearly semicircular in cross section and guiding rings 7 nearly semicircular in cross section. The shaft 2 comprises a radial bore on diametrically opposite sides, into which a dog 8 is screwed, and a blind bore 11, into which a locking member 12 is retracted by action of a spring 17. The radial bore 3 and the blind bore 11 are angularly spaced by 90.degree. with respect to the center plane of the flyweight 3 rigidly connected. When the shaft 2 is rotating, the locking member 12 extends from the blind bore 11, such that the movable flyweights 5 are held between the dogs 8 and the locking members 12. The locking members 12 are subjected to hysteresis and are retracted at a rotary speed, which is lower than the loading rotary speed.

Abstract: An improved locking means for display packages of the vacuum-formed type having a first section closable onto a second section to hold articles in an interior chamber formed therebetween and means for locking the sections in the closed position. The improvement comprises locking means having snap-engaging male and female portions. The male portion is formed integrally with the first section and has a negative or zero draft sidewall that terminates in an outwardly projecting widened collar at its crown. A female portion is formed integrally with the second section and has a zero draft sidewall having a narrowed rim around its receiving opening. The widened collar resiliently snap-engages with said narrowed rim at spaced-apart contact points therebetween. The improved locking means is capable of releasably locking a display package in the closed position.

Abstract: A rotary digester comprises a shell having means at one end for entry of material to be digested and, at the opposite end, a liquids outlet surrounded by a solids outlets. The solids outlet has a screw which assists in preventing egress of unwanted liquid with the solids.

Abstract: It is the object of the invention to give also the non-professional the possibility to apply, by means of this method and a template, mineral plaster in the form of clinker plastering to a wall surface. To this end a template with a network corresponding to joints and made of impregnated cardboard is applied to a continuous carrier film by means of a non-hardening adhesive, and is folded in zig-zag form. The network is removed from the carrier film and stuck to the same extent to a wall surface. Afterwards the mineral plaster is applied to the wall surface. After removing the network a clinker or brick-work like structure is attained. In the spray rendering method embodiment the network is made of paper-thin, tension-resistant material. The network and carrier film are then rolled up in a roll.

Abstract: Two flyweight shafts 12,22 are coupled by means of gears 18,30 each attached to one flyweight shaft 12,22 and two intermediate gears 54,56 each engaging one of these gears 18,30 and mesh with each other. Each of the intermediate gears 54, 56 is mounted on one of the oscillating cranks 32, 34 pivotably mounted on the associated flyweight shaft 12 and 22, respectively. The oscillating cranks 32 and 34 are held parallel to each other and can be pivoted to effect a relative phase displacement of the flyweight shafts 12, 22. The oscillating cranks 32,34 are provided with counterweights 62,64 and are thereby mass balanced to prevent oscillations from becoming effective on the oscillating cranks 32,34 and thus on the adjusting mechanism 60 during vibratory operation due to intertial forces.

Abstract: A bearing including inner and outer concentric races, a cage member disposed between the races and having pockets for receiving rolling elements maintained in rolling engagement with the races, seals for preventing the loss of lubricant, and means between the races for continually directing lubricant from areas of build-up to the rolling elements.

Abstract: A dryer for extracting moisture from wet goods, such as linens, of the type having a tumbler cylinder, an open side of the cylinder through which goods are inserted and removed, and a shell in which the cylinder is housed. The dryer has an external support frame including a portion extending above the shell. The shell is hingedly supported at its top to the support frame and is pivotable about the hinge to permit goods to be removed from the cylinder directly beneath the shell. A door is included for closing the open side of the tumbler cylinder and has a lower door segment which is fixed to the support frame and an upper door segment which is attached to the shell for shifting across the face of the shell to open and close an upper portion thereof.

Abstract: A hydraulic accumulator unit having a volume variable against the force of a spring and a restrictor are provided for eliminating slow pressure fluctuations in a measuring instrument responsive to fluid pressure, through which restrictor the hydraulic accumulator unit is connected to the fluid subjected to the pressure fluctuations. The measuring instrument measures the pressure in the accumulator unit.

Abstract: A data processing system consists of a number of modules such as integrated circuit chips, each of which receives a clock signal. Each module contains a checking circuit producing a failure signal which indicates whether or not the module is operating correctly. The clock signal is used to invert the sense of this failure signal in successive clock periods. Thus, the failure signal normally alternates between two values in successive clock periods, and its phase relative to the clock signal denotes whether or not a failure has been detected. However, if the clock supply to a module fails, or if the checking circuit itself fails, the failure signal from that module no longer alternates, but is frozen at one or other of the two values. This allows failure of the clock supply or of the checking circuit to be detected.