Abstract: A panel system for walls, ceilings, and the like is disclosed in which the panels are provided with a flexible surface material which extends into resilient means that operate to press the surface material of adjacent panels into face-to-face contact to provide a closed, neat joint between adjacent panels. Because of the resiliency along the joints, brackets, screws, and the like may be inserted through the joints and secured to the panel supporting frame structure without damage to the panel materials. Subsequently, if the brackets, screws, and the like are removed, the resilient means returns the flexible sheet material into the face-to-face abutting condition, re-establishing the closed joint and concealing the fact that anything had previously been inserted through the joint. In some embodiments, the surface sheet material is provided with a loose flap which is inserted into the resilient means after the panels are installed.

Abstract: Electrochemical generator comprising an anode compartment and a cathode compartment, separated by a semipermeable diaphragm and each containing an active electrode material and an electrolyte, the active electrode material of at least one of the compartments being constituted by an electronically conductive organic polymer, wherein in one of these compartments in which the active electrode material is an organic polymer, the electrolyte of said compartment comprises an electroactive compound, which is soluble in the electrolyte and has a redox potential which is close to that of the organic polymer with which it is in contact.

Abstract: A method and apparatus for forming self tapping threaded fasteners having a cylindrical gripping portion and a tapered end portion with swaging lobes thereon is disclosed. The apparatus includes a pair of flat dies having a flat G-surface formed with thread rolling grooves therein to form the gripping cylindrical portion of the fastener. A rise angle surface having thread forming grooves therein with lobe forming recesses adjacent to the finished end operate to form the tapered point with lobes thereon. The G-surface is wider at the forward end of the die and progressively narrows until a dwell or finished portion is reached adjacent to the finish end of the die. Consequently, the threads along the tapered portion of the blank are not as fully formed as the threads along the cylindrical portion when the blank reaches the finishing end and excess material is available to fill the recesses and produce the lobes.

Abstract: An RF wattmeter is disclosed of the type using an "insertion-type" pick-up element to produce a voltage wave signal corresponding to the measured power in the coaxial transmission line. The induction loop in the pick-up element is connected to a principal detector, and a secondary detector is connected in opposition to the principal detector. Both detectors are located in close proximity to each other and are subject to the same thermal environment. A sine wave generator supplies a wave signal to the secondary detector in opposition to the wave signal supplied to the principal detector from the inductive loop. The d.c. portion of the resulting signal representing the difference between the opposed signals is integrated, and the integrated output is used as the amplitude in the generated sine wave. When the circuit is in balance, the integrated output matches the amplitude of the inductive wave form and can be used as an output indicating measured power in the coaxial transmission line.

Abstract: A method and composition for the release of air bladders during tire construction is disclosed. The method involves the application of a bladder release composition directly upon the expandable air bladder in the tire production machinery. The bladder release composition typically consists of a blend of siloxanes, which when combined, provide significant air bleed qualities.

Abstract: A process for the preparation of porous products containing cobalt fluoride CoF.sub.2 or lead fluoride PbF.sub.2, wherein it comprises thermally decomposing lead fluosilicate or cobalt fluosilicate.

Abstract: A novel and improved, expanded metal is disclosed along with novel and improved products incorporating such expanded metal. The expanded metal is formed from a piece of sheet metal which is lanced in nested arrays so that when the metal is expanded, diagonal legs are connected to the remaining portion of the sheet metal by folds. After the expanding operation, the legs are substantially coplanar with the adjacent portions of the piece of sheet metal, and the only material deformation of the metal occurs along the folds. The illustrated legs and adjacent projections, which are connected to the legs by folds, are curved so that the centers of the legs have a maximum width. The expanded metal is illustrated incorporated into various types of framing members used to position interior panels of building structures, such as drywall studs, floor tracks for drywall construction, and intersection tracks. Also disclosed are grid tees for suspension ceilings and wall molding members for suspension ceilings.

Abstract: Process for producing a semiconductor component by diffusion with prior ion implantation. According to the invention, an impurity of oxygen, fluorine, chlorine or bromine having chemical affinity with the diffusion impurity is implanted in the semiconductor substrate of GaAs or InP before thermally diffusing Zn, Cd or Fe in the substrate. The diffusion is thus limited in depth.

Abstract: A refrigeration compressor assembly includes a motor compressor mounted within a hermetically sealed shell with a sump area at the bottom containing a lubricating oil. An oil stirrer is secured to the crankshaft below the motor components and includes a hub secured to the crankshaft and a conical, smooth, imperforate skirt extending outwardly and downwardly below the oil surface. The oil stirrer is formed of a plastic insulating material which does not permit the formation of eddy currents within the oil stirrer from the motor flux leakage and whose surface is not wetted by the lubricating oil.

Abstract: Responses of a human subject may be by voice, hand or foot movement, or bodily secretions, as examples. A hiatus of such responses may be termed a lapse in the continuity of the response, including a hesitation pause in the voice, a movement of hand or foot on a monitored control of a motor vehicle or vehicle simulator, or pulsatile bodily secretions on a monitored control of an implantable insulin pump. In a voice response, the hesitation pause may be more than about one second in the voice of a subject during a dialogue or monologue. The hiatus rate of such responses is indicated by the present apparatus, as is the average hiatus duration for two or more hiatus rates. The dominant hiatus rate is also determined and indicated. A microprocessor is utilized in such determination. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: The door-mounted water and ice cube dispenser of a refrigerator is supplied with chilled water and electrical power by a water conveying conduit and a plurality of electrical conductors which together pass through a hollow pintle and socket portion of a lower hinge assembly pivotally supporting the refrigerator door. To facilitate removal of the door from the associated refrigerator cabinet, the lower end of the conduit is connected to an end of a chilled water supply line by a union type coupling, the lower ends of the conductors being connected to a plug engageable with an associated power supplying socket fixed to the refrigerator cabinet. The conduit and conductors extend upwardly from the lower hinge assembly to the dispenser location via the interior of an elongated, rigid, tubelike member that isolates the conduit and conductors from any thermal insulating material or other obstructions filling the interior volume of the door.

Abstract: A process for the purification of uranium hexafluoride containing traces of neptunium fluoride and/or plutonium fluoride, wherein the uranium hexafluoride to be purified is contacted with a metal fluoride chosen from the group including lead fluoride PbF.sub.2, uranium fluorides of UF.sub.4+x in which x has a value between 0 and 1 and chromium trifluoride CrF.sub.3, at a temperature such that the plutonium and/or neptunium fluorides are reduced, and wherein the thus purified uranium hexafluoride is recovered.

Abstract: An image memory graphic terminal comprising an image memory constituted by memory planes, each plane incorporating a matrix system of memory points, a sequencer, a graphic display processor, a video signal generator, a video display receiver, a management microcomputer.According to the invention, the terminal also comprises a system for writing or recording in the image memory image texture signals, said system comprising(A) a circuit for processing the access cycle to the image memory, said circuit incorporating:(A.sub.1) a circuit for the transmission, with a time lag, of the signals for controlling the access cycle to the memory,(A.sub.2) a shaping circuit (42),(B) a circuit for the determination of the word to be written into the memory, incorporating:(B.sub.1) an operation parametrization circuit,(B.sub.2) a computing circuit being able to: . calculate two coordinates .alpha.* and .beta.* from addresses x, y and signals .DELTA.X, .DELTA.Y, .DELTA.H, .DELTA.V, off.sub.x, off.sub.y(B.sub.

Abstract: Adjoining strata of pressure-sensitive adhesive are transferred to a package substrate. The two outermost adhesive strata have different adhesion to the substrate. The adhesive strata are used as a reclosable fastener and are intermixed in the course of reclosing and reopening the package, the action being such as to advantageously compensate for contamination occurring at the reseal interface while maintaining the status quo at the permanent interface.

Abstract: An apparatus for forming helically wrapped spine fin heat exchanger tubes is disclosed which includes a rotatable cutter head operable to cut a strip of thin metal to provide a base portion and a multiplicity of spines integrally joined at one end to the base portion. A tube feed is provided to axially feed smooth tubing past the cutter head. As the tube is fed past the cutter head the cutter head operates to helically wind the spine fin material on the tube. A first drive is provided to drive the tube feed and cutter head in time relation to ensure that the tube is fed through a predetermined minimum distance during each revolution of the cutter head. A second drive is provided to increase the distance through which the tube is fed during each revolution of the cutter head to increase the helix angle of the material being wound onto the tube and correspondingly reduce the spine fin density at selected locations along the tube.

Abstract: A pergola having a top comprising a plurality of wooden strips aligned in parallel relationship with a bottom planar face inclined to the mutually parallel side faces so as to provide a support orientation easily determinable and effective to provide differential shading from the sun by reason of the change in inclination of the sun during the seasons of the year.

Abstract: This invention relates to a method of converting a digital signal into an analog signal and a digital-to-analog converter therefor.In the invention, a digital signal having varying pulse width values is converted into a first pulse width signal, with each pulse varying in its pulse width in response to its respective data values and with the center of each pulse width being at a fixed time position within a respective sampling period, while a complement of the digital signal is converted into a second pulse width signal with each pulse varying in its pulse width in response to its respective data value and relative to said center of each respective pulse width. The first and second pulse width signals, after one of them is inverted, are mixed and pass through a smoothing filter to demodulate the digital signal into the analog signal.

Abstract: A tamperproof dispenser end closure includes a base and a rotor pivotally connected to the base by a hub. The base and rotor have webs provided with means defining respective dispensing apertures. The base and rotor are retained in a close superposed relationship to each other by the hub. Frangible means are provided which tear or break when an attempt is made to separate the base from the rotor so that the base and rotor cannot be pivotally connected again by the hub.

Abstract: Process for the preparation of a composite material incorporating an inorganic matrix in which are distributed inclusions of carbon-containing material, where it comprises the following stages:(a) mixing an inorganic powder with a liquid or viscous resin, which can be transformed into vitreous carbon by heat treatment,(b) subjecting the mixture of resin and inorganic powder to a first heat treatment performed under conditions such that the resin is hardened by crosslinking or polycondensation, and(c) subjecting the thus obtained hardened product to a second heat treatment for transforming the resin into vitreous carbon and thus forming said vitreous carbon inclusions.The composite material obtained comprises a copper matrix in which are uniformly and homogeneously dispersed vitreous carbon inclusions, the vitreous carbon content being at the most 8% by weight.The material is used in the production of electric contacts.