Abstract: A pushbutton tuner has a plurality of presettable pushbutton actuator assemblies. Each of the pushbutton actuator assemblies comprises a slide mounted on a support so as to be movable between a forward inoperative position and a rearward operative position and normally biased into the inoperative position, a control member pivotally mounted on the slide and having an upstanding pin mounted thereon and being adjustable positionable relative to the slide, a preset member for releasably locking the control member to the slide, and a pushbutton carried by the preset member and having a forward end of the slide slidably received therein. The pushbutton actuator assemblies are disposed in a direction transverse to a movable part of a tuning element.

Abstract: A real-time ultrasonic imaging system includes a display which is compensated for the non-ideal characteristics of the search beam profile. Echo responsive electrical signals are provided to a preprogrammed computing means for being processed to compensate for the characteristics of the test probe. The processed signals are displayed as being in focus at all distances from the probe, thereby resulting in an image exhibiting improved resolution.

Abstract: A method of driving a liquid crystal display matrix, in which digit drive signals are applied to digit electrodes and segment drive signals are applied to segment electrodes. Each of the digit drive signals has first pulse components of a first pulse width varying at a plurality of voltage potentials in a first predetermined sequence during each cycle, and a second pulse component of a second pulse width having a selected one of the voltage potentials during each half cycle. Each of the segment drive signals has first pulse components of the first pulse width varying at at least two of the voltage potentials in a second predetermined sequence, and a second pulse component of the second pulse width having a voltage potential equal to that of the second pulse component of the digit drive signal.

Abstract: A modular chamber construction for providing ultraviolet light irradiation within a confined space. The chamber comprises a plurality of side panel assemblies mounted on a base member and arranged to form a vertically upstanding enclosure of polygonal configuration. Two of the panels are hinged to provide doors, with the remaining panels being bolted to the base and to each other. Each of the panel assemblies contains a plurality of long, tubular fluorescent lamps and associated ballast circuits, with the lamp vertically oriented and juxtaposed to face the interior of the enclosure. A top member containing filtered ventilating fans and downwardly facing mirror configuration is bolted to the top edges of the stationary side panels by means of a peripheral flange which permits mounting by sliding the top member horizontally onto the enclosure through the door opening.

Abstract: To permit a cook to easily adapt an existing recipe, a calculator includes logic circuitry for calculating and storing the ratio of servings desired to servings stated in the recipe. The calculator also includes a keyboard for entering the quantity of each ingredient stated in the recipe. Desired units of measure and stated units of measure can be entered through marked keys. The calculator converts a stated quantity in the stated units to the amount required for the desired number of servings in the desired units of measure. The results are displayed on a visual display.

Abstract: Improved weather resistant products such as building siding, shutters, roof vents and the like, are made by coextruding or laminating a plasticized vinyl chloride capstock with a substrate of rigid vinyl chloride polymers, chlorinated vinyl chloride polymers, or acrylonitrile-butadiene-styrene polymers. The resulting composites are much improved over rigid PVC, chlorinated PVC, or ABS articles alone for retention of appearance and retention of impact on aging.

Abstract: Norbornadiene and isoprene are catalytically codimerized to an olefinic codimer. Used is a three-component homogeneous catalytic system consisting of cobaltic or cobaltous acetylacetonate, 1,2-bisdiphenylphosphino ethane and an alkyl aluminum chloride. The codimer upon hydrogenation forms .beta.-methyltetramethylene nortricyclane having utility as a diluent for a high energy hydrocarbon missile fuel.

Abstract: Concrete articles to be cured are charged into a kiln. A hot water bath is maintained on the kiln floor and the water is circulated through a heat exchanger and sprayed beneath the level of the concrete articles into the water bath to maintain the water bath at a temperature of 100.degree.-200.degree. F to thereby maintain the internal kiln atmosphere at a humidity greater than 90% and at a sufficiently high temperature to effect hydration and hardening of the cement and due to the closed nature of the kiln, the temperature therewithin can be maintained within 5.degree. F from top to bottom. The sprayed hot water supplies the needed heat energy and the water vaporization within the kiln provides the degree of moisture needed to cure the concrete articles. As water rather than steam is used, less energy is needed to heat the water than required to generate steam so that the overall cost of curing the concrete articles is considerably reduced as compared to steam curing methods.

Abstract: Described is an optical fiber connector in which accurate alignment is achieved by having the fiber enclosed by three parallel inner rods. Two sets of inner rods, and hence two fibers, are aligned by means of a resilient sleeve containing three additional (outer) rods along which the inner rods can glide. In one embodiment the sleeve is a metal tube and the outer rods are affixed to its inner surface, whereas in a second embodiment, adapted for mounting an array of connectors, the sleeve is a rubber-like material into which the outer rods are molded. A plurality of such sleeves are mounted in holes in a rigid support member.

Abstract: A cutting knife assembly for severing a strip of material after it has been wound on a core and the winding operation is to be continued on a new core.

Abstract: A method of making a diode laser in which a pump current confining channel is formed on the substrate side of a diode laser prior to growth of the active or recombination region of the diode laser. The current confining channel is formed by providing, by diffusion, a rectifying junction on a substrate surface and then forming, by etching, a narrow channel completely through a central portion of the diffused layer and the rectifying junction. The remaining layers of the diode laser are then successively grown. The portions of the rectifying junction on both sides of the channel are reverse biased when the primary junction of the diode laser is forward biased whereby pump current flow is confined to a path through the channel.

Abstract: A monitoring circuit for digital circuits is disclosed. The monitor is primarily applicable to digital circuits which operate in a cyclic mode with the digital patterns generated during each cycle being repeated in a predictable manner. A predetermined number of expected bit patterns are stored in a programmable memory. The stored bit patterns correspond on a bit-by-bit basis to the bit patterns generated by the circuit being monitored when this circuit is operating normally. In the self-scan mode each pattern generated by the circuit being monitored is compared to each of the patterns stored in the memory in a sequential manner. Each time a pattern generated by the circuit being monitored is found to identically correspond to a pattern stored in the memory a valid pattern pulse is generated which steps a down counter one count.

Abstract: An improved offshore drilling method and apparatus are disclosed which are useful in preventing formation fracture caused by excessive hydrostatic pressure in a drilling riser. Gas is injected into the riser to provide the lift necessary to return the drilling fluid to the surface and to reduce the density of the drilling fluid. The rate of gas injection overlifts the drilling fluid to the extent that the pressure of the fluid is reduced to less than that of the seawater surrounding the riser. Seawater is permitted to flow into the lower end of the riser in response to the differential pressure between the drilling fluid and seawater so that the pressures of the drilling fluid and the seawater approximately equalize.

Abstract: Certain sulfonamidoquinolines and metal complexes thereof both of which are soluble in essentially water-immiscible organic solvents. The sulfonamidoquinolines have the structural formula ##STR1## where the R, R.sup.1 and R.sup.2 groups and m and n are as defined in the specification and claims hereof. Solutions of the sulfonamidoquinolines and the metal complexes thereof in essentially water-immiscible organic solvents.

Abstract: A printing head assembly for exposing raw stock film with a preprint film in a contact film printer including a dual roller gate assembly. The dual roller gate assembly includes a pair of rollers mounted on a roller frame for engaging the preprint film and raw stock film on opposite sides of the printing aperture for wrapping both the preprint and raw stock film about a segment of the printing sprocket of substantially greater length than the printing aperture. An adjustable biasing spring permits regulation of the tension applied through the rollers to the film runs. The dual roller gate assembly includes a selectively operable retraction device to withdraw the rollers away from the printing sprocket for loading and unloading the film printer. In an alternate embodiment, the dual roller gate assembly is pivotally mounted by an offset shaft which permits pivotal movement of the dual roller gate assembly to provide clearance for loading the film printer.

Abstract: An adjuvant for an elastomeric composition is made by mixing methacrylic acid with a suspension of zinc oxide in a liquid medium (such as water or alcohol) in the proportions required to form basic zinc methacrylate. Removal of the liquid from the reaction product and blending of the finely divided reaction product with an elastomer such as cis-polybutadiene yields a compositon which, when cured (for example with an organic peroxide), is hard yet resilient. Molding of the composition in the form of a golf ball produces a durable solid golf ball which has in large measure the play characteristics of a wound golf ball, and substantially retains such characteristics after extended play.

Abstract: A chewing gum is provided which contains non-dusting colorants in the form of lake colors dispersed in an animal or vegetable type fatty acid or oil vehicle substantially. The gum may also contain artificial sweetners thereof.

Abstract: An analytical apparatus is described having a non-dispersive, multiwavelength photometric analyzer which is adapted to provide simultaneous display of chromatography peaks at a plurality of different analytical wavelengths. In a particular arrangement, the apparatus includes a chromatograph for separating a sample to be examined into components.

Abstract: Thermally crystallizable glass and glass-ceramic compositions, having a narrow critical range of compositions coming within the SiO.sub.2 -Al.sub.2 O.sub.3 -Li.sub.2 O system, consist essentially of SiO.sub.2, Al.sub.2 O.sub.3, Li.sub.2 O, TiO.sub.2 and ZrO.sub.2, contain 18.2-20.3 parts Al.sub.2 O.sub.3 per 100 parts by weight of SiO.sub.2 +Al.sub.2 O.sub.3 +Li.sub.2 O, have Li.sub.2 O to Al.sub.2 O.sub.3 molar ratio of 0.55 to 0.63, and contain 2.8-5 weight percent TiO.sub.2 +ZrO.sub.2. Glass-ceramics of superior static fatigue resistance can be made from such glasses.

Abstract: A flow control device incorporates a flow sensor and a flow control circuit responsive to the output signal of the flow sensor. The flow control circuit operates, via a servo, a flow control valve. The flow sensor incorporates a self-heated thermistor located in the divergent discharge throat of a nozzle in the flow stream. Two unheated thermistors are also located in the fluid, at arbitrary points distant from the nozzle, and incorporated in the control circuit for temperature compensation. The valve controls the flow of fluids therethrough by the distention of an integral seal tube into a cavity formed in an anvil inset into the seal tube. The cavity is conical in shape and the elastomeric seal tube is pressed thereinto by means of a ball. Two orifices issue into the cavity and terminate in the flow channel at the upstream and downstream ends of the valve. With the ball at the inmost limit of its travel, the seal tube blocks the exits of both orifices into the cavity and prevents flow in the channel.