Abstract: A two-phase mixture of at least two fluids which is supplied with subsonic velocity through associated feed lines (4, 3) is accelerated to sound velocity by means of a nozzle (2). Upon the exit from the narrowest cross-sectional area (6) of the nozzle (2) the two-phase mixture is expanded in an expansion chamber (10) to supersonic velocity. The two-phase mixture expanded to supersonic velocity is thereafter brought to ambient pressure substantially as a one-phase mixture after flowing off through a diffuser passage (9) by means of a shock wave built up in an outlet channel (8). The outlet channel (8) has a constant cross-sectional area the hydraulic diameter of which is as great as the hydraulic diameter of the narrowest cross-sectional area (6) of the nozzle (2) or amounts to up to the three-fold of this hydraulic diameter. An outlet (11) provided with a relief valve (22) is connected to the expansion chamber (10).

Abstract: A method of inhibiting fat and oil migration from an oily substrate of a food product into a coating layer of a food product, comprises the steps of mixing a shellac solution and an alcohol together to form a barrier coating solution, coating the oily substrate of the food product with an effective amount of the barrier coating solution to form a barrier coating layer of film surrounding the oily substrate, and covering the barrier coating layer of film with a coating layer of a food product.

Abstract: The fibrinogen concentration of a blood plasma sample is measured and simultaneously the prothrombin time is determined. Potentiophotometric apparatus is used in which the output signal is applied to an analog/digital converter and digital recorder. Digital voltage values are developed and then printed in an array. A computer records digital voltage values produced by the apparatus with a plasma sample in the test tube before injection of thromboplastin. The time of the injection is identified by a substantial change in the recorded voltage values. After a short time delay the digital voltage value is noted and thereafter this voltage value is compared with a second voltage value. A difference of three or more identifies the beginning of clotting. The first of the two voltage numbers is identified x and is compared with the voltage value 60 seconds later, which is identified y. The delta voltage value is y-x.

Abstract: A rotary table assembly apparatus for stuffing a snailed endless ribbon into a ribbon cartridge comprises a rotary table, a mounting plate affixed to the table for mounting and positioning a bottom housing of a ribbon cartridge, a loop tray affixed to the front portion of the mounting plate for holding a snailed loop while it is being stuffed into the ribbon cartridge, adjustable slide panels mounted on the loop tray to create narrow slits with a pin to hold the ribbon upright as it passes through the slits into the ribbon cartridge and to prevent more than one layer of ribbon from passing from the loop tray into the cartridge, and a cover for keeping the ribbon from jumping out of the loop tray as the ribbon is being fed into the cartridge.

Abstract: A semiconductor package includes a lead frame with a die or chip mounted on a die pad, a base made of a thermoplastic material and having a cavity, and a lid made of thermoplastic material ultrasonically welded to the base to cover the cavity and protect the electronic device in the package. The package may include a substrate with conductive traces. A method of attaching a lid to a semiconductor package base includes the steps of providing a semiconductor package base having an open cavity, providing a thermoplastic lid that covers the open cavity, placing the lid on the semiconductor package base so that the lid covers the open cavity, applying pressure to hold the lid and body together, and attaching the lid to the base by ultrasoncially welding them together.

Abstract: A diverter valve has an IN port and first and second OUT ports which are positioned along an arcuate path. A rotor has an external control knob and a stem extending within the cavity of the valve body. Mounted on the stem, at right angles thereto, is a closure pin which extends into the bore of the hub of a mushroom-shaped closure element. The surface of the domed head of the closure element is in contact with an O-ring seal at one of the OUT ports. When the rotor is moved, the O-ring, in contact with the surface of the domed head, cams the closure element inwardly causing the element to slide on the closure pin and causing the closure pin to enter more deeply into a recess in the head of the closure element. When the closure element is in place to close-off one of the OUT ports, the other OUT port is opened and the pressure of the water flowing through the valve exerts a direct pressure on the flat annular undersurface of the head of the closure element.

Abstract: Lead frames for microchips and other integrated circuit dies are produced by a continuous manufacturing method and apparatus in which silver spot plating is done prior to etching away unwanted portions of the lead frame substrate. A flexible substrate of a metal alloy is fed continuously from a reel, then spot plated with silver, coated with a photosensitive material, and exposed to intensive light in an exposure chamber using a photoresist or masking tool of predetermined design. The exposed photosensitive material is developed chemically, etched in acid, and placed in a chemical solution to remove any remaining unwanted material. The strip is then dried, cut to predetermined lengths and boxed for shipment. If necessary, the strip is downset and taped before packaging. In a presently preferred process, the metal alloy substrate is 42 alloy (Fe+Ni), and the selective spot plating is silver 100 to 150 microinches thick.

Abstract: A hollow plastic container for holding water and a candle for use in a luminaria comprises a bottom wall, a top wall, four side walls extending between the bottom wall and the top wall, and a candle securing member for securing the candle in an upright position in the container, the candle securing member including a well formed in the bottom wall into which the candle is inserted, the top wall having an opening above and aligned with the well to permit the candle to be inserted into the well, to permit the candle to extend from the container, and to permit insertion of water into the container. In use, the flame of the candle is automatically extinguished when the candle burns down to the point where the water held in the container contacts the flame.

Abstract: Strip elongation in a continuous annealing furnace is controlled by passing the strip around a first driven roll, then through a portion of the furnace, then around a second driven roll, wherein the elongation of the strip is sensed. One method is to sense the amount by which the peripheral speed of the second roll exceeds the peripheral speed of the first roll. Roll speeds are monitored by precision resolvers. Another method is to utilize a strip width measurement to determine elongation. Mechanisms are used for profiling tension throughout the furnace length.

Abstract: A disposable one-time use, inexpensive, capillary-action safety micro-pipet for obtaining a sample of blood or other liquid comprises a transparent glass tube which is capable of drawing blood or other liquid into the tube by capillary action, and a resilient sheet, with an adhesive layer adhering the resilient sheet in one or more layers around the outside surface of the tube for covering the outside surface of the tube and protecting a user against being cut by any jagged edges of a broken tube.

Abstract: Lead frame workholder and transport apparatus for holding and transporting a strip of lead frames from one station to another, each lead frame having a pad and a locating pinhole, comprises a track having an input station at one end and an output station at the other end with an application station in between, a vacuum loader for loading a strip of lead frames onto the input station, a first transporter for contacting the lead frame strip in the input station by inserting a pin into the locating pinhole and moving the strip along the track to the application station, and a second transporter for moving the strip to the output station and into an exit carrier. A method of applying an epoxy layer to the pads of a strip of lead frames using the apparatus is disclosed.

Abstract: An anti-copying composite film comprising a substratum of paper or synthetic resin film, a metallic foil formed on the surface of said substratum and a colored transparent synthetic resin coating layer applied to the surface of said metallic foil, said anti-copying composite film being characterized in that the color of the coating layer is selected in Munsell color system so that the value may be 9 or less than 9 regardless of the hue, while the chroma is selected so that an index calculated in a formula on the base of the difference of the value and the difference of chroma with respect to those of black may be 20 or more than 20.

Abstract: The invention concerns a gas plug for metallurgic smelting crucibles with a sheet-metal sheathing that comprises at least the gas connection side part of the outer surface and the bottom, with the exception of an area for connecting the gas supply means.

Abstract: A cylindrical roller apparatus for a glass tempering oven comprises a ceramic roller having a first end portion and a second end portion, a flat formed on each end portion of the roller, an end cap having a cylindrical wall mounted on each end portion of the roller, a metal retaining plate positioned on each flat, and a screw threaded through each end cap wall that screws into contact with the retaining plate for securing each end cap to the roller and for pushing the roller flush against the inner surface of the end cap wall. An acess hole can be provided in the end cap for welding together the screw, retaining plate, and end cap. Grooves can also be formed on the inner surface of the end cap, accessible through an opening formed through the end cap, to allow injection of adhesive between the roller and end cap to further secure the two together.

Abstract: A stationary seal ring assembly for a dry gas face seal unit which comprises a face seal ring adapted to cooperate with a rotating mating ring mounted on a shaft, a shroud mounted on the periphery of the face seal ring to prevent the ring from bending or deflecting when subjected to unbalanced gas pressures, and mounting apparatus connected between the face seal and the shroud for mounting the shroud onto the face seal ring, the mounting apparatus comprising a support ring and a retaining ring which, together with the shroud, urge a pair of seals against the opposite faces of the stationary seal ring.

Abstract: A rotary table assembly apparatus for stuffing a snailed endless ribbon into a ribbon cartridge comprises a rotary table, a mounting plate affixed to the table for mounting and positioning a bottom housing of a ribbon cartridge, a loop tray affixed to the front portion of the mounting plate for holding a snailed loop while it is being stuffed into the ribbon cartridge, adjustable slide panels mounted on the loop tray to create narrow slits with a pin to hold the ribbon upright as it passes through the slits into the ribbon cartridge and to prevent more than one layer of ribbon from passing from the loop tray into the cartridge, and a cover for keeping the ribbon from jumping out of the loop tray as the ribbon is being fed into the cartridge.

Abstract: A ribbon cartridge comprises a housing having a bottom wall and a side wall extending upwardly therefrom to form an open top, a cover adapted to fit over the open top of the housing to close the housing to form a ribbon cartridge, an output arm and a take-up arm formed in the cartridge with a print space between the arms, the cartridge being adapted to hold a ribbon stuffed inside and extending between the arms from the output arm to the take-up arm, flexible fingers which are spaced apart from each other and attached at their base portions to the housing, with each finger being positioned in a finger opening in the bottom wall of the housing, whereby when an end tab of a finger meets resistance from a top wall of a correction cartridge, the finger is pushed into the interior of the housing, and when an end tab of a finger does not meet such resistance, it actuates the typewriter switch to actuate the typewriter.

Abstract: A fire extinguishing means based on a combination of various clay minerals, with the clay mineral mixture containing at least a certain amount of smectite, kaolinite as well as clay minerals from the mica group.

Abstract: A faucet with control mechanism for passing water through the faucet or for shutting the water off, which comprises ceramic discs having mating long-wearing highly polished faces that provide a water seal when the discs are in closed position, and have openings therein which provide a water passageway when the discs are in open position for axial flow, wherein the ceramic discs themselves form the passageway or pressure vessel which contains the flow and permits the use of a side-operated handle which attaches to a controller inside the faucet which is open to the atmosphere. A lower body portion has a threaded stem with a pair of opposed flat portions for admitting a split mounting washer without having to thread the washer on the threaded stem all the way from the bottom of the stem.

Abstract: A method of making pull-tabs for the ends of cans of soda or the like in which a strip of aluminum having a top surface and a bottom surface is fed into a progressive die, a substantially non-volatile lubricant composition is deposited onto the top and bottom surfaces of the strip as it is being fed into the die so as to protect the die from excessive wear during subsequent stamping operations, pull-tabs are stamped out in a progressive fashion in the progressive die, and the amount of lubricant composition deposited is such that it is substantially completely used up so that the tabs are substantially free of lubricant composition when they leave the die, whereby the emission into the atmosphere of volatile organic contents is substantially reduced or eliminated, and unwanted transfer of lubricant from a pull-tab to a can end stacked above it is substantially reduced to avoid contaminating the can end. The preferred lubricant composition is about, by weight, 20 parts butyl stearate and 80 parts mineral oil.