Abstract: A self-contained solar powered marking light. The marking light may be utilized to delineate certain predetermined boundaries without effectively illuminating the areas. The marking light automatically illuminates when output power from the photovoltaic cells contained therein fall below a predetermined level and automatically extinguishes when the voltage from the photovoltaic cells reaches a predetermined level. The marking light includes a lens which is closely coupled to a source of light and which includes a textured surface for diffusing the light to cause the lens to appear to glow when the source of light is illuminated. An electrical circuit is coupled between the photovoltaic cells and a battery and includes the source of light and switching means for automatically illuminating the light dependent upon the relative relationship between the voltage of the photovoltaic cells and the battery voltage.

Abstract: Compounds of the general formula I ##STR1## wherein R1 represents --R3, --OR3 or --N(R3).sub.2, in which R3 is alkyl of 1 to about 18 carbon atoms;R2 represents alkyl of 1 to about 18 carbon atoms; andX represents --OR3, halogen, --CN, --SR4 or --N(R4).sub.2, in which R4 is alkyl of 1 to about 5 carbon atoms,which the proviso that at least one of R2 and R3 is a pheromone alkyl chain. Members of this class of compounds have been shown to exhibit outstanding activity in disrupting pheromone-mediated behavior of various insects, in particular moths.

Abstract: A collecting apparatus for the collection of pinworm eggs incorporates a shaft surrounded by an adhesive strip. A tab is disposed at the free end of the adhesive strip. The shaft is attached to a gripping member by a connecting member.The gripping member is preferably a threaded screw cap suitable for use with a storage tube. The shaft and connecting member are placed within the tube and the tube is sealed with the gripping member for transportation and storage of collected eggs. Once a specimen is collected, the tab of the adhesive strip is used as an anchor. Using the gripping member as a tool in a rotating fashion, the entire adhesive strip is rolled onto a microscope slide without disturbing any specimens on the strip.

Abstract: For a raster-scanned, video display apparatus, individual pixel display data is stored in a double image frame buffer. A valid count buffer then holds a count for each pixel. Current valid counts are stored, as at times of image buffer updating which updating includes storing display data changes and a fraction of the total display (background). At times of display, current counts from the count buffer are tested against valid counts as stored for each pixel in the valid count buffer to determine the selection of display data from the image frame buffer or alternate background data. A window frame buffer resolves the display into windows that are accommodated by the system with valid counts for each window.

Abstract: A control valve for limiting the passage of water between a water source and a hot water tank within an automatic control system for water heaters. The control valve contains a sensing means for determining pressure differentials between the hot water tank, the water source and the delivery system. A rod is secured within the control valve housing for limiting the movement of the sensing means when the hot water heater ruptures of leaks. The sensing means also includes a valve seat which acts to control the entrance of water from the water source into the hot water tank. The valve seat defines a leak path which prevents water pressure loss in the hot water tank during a water cooling cycle.

Abstract: A self-contained photovoltaic powered light which is a stand alone unit. The solar cells which power the light are assembled and maintained within the top, or upper, portion of the self-contained unit. The solar cells are encapsulated within a resiliently deformable material to provide for contraction and expansion of the solar cells while at the same time providing protection from the elements for the assembly. A component tray assembly is rotationally secured to the upper portion of the lamp and a lens with decorative disks are rotationally secured to the component tray assembly.

Abstract: A source of infrared radiation or an infrared radiator is disclosed for use in surveillance systems, and the like. The infrared radiator comprises a light source for providing a beam containing infrared radiation and a radiation filter disposed in the path of the beam to selectively pass only the infrared radiation. The light source and radiation filter are disposed within an inner housing which is in heat transfer proximity thereto. The inner housing is configured to contain visible light within the inner housing and permit infrared radiation to exit only through the radiation filter. An outer housing having openings formed therein is disposed about the inner housing such that a portion of the outer housing is spaced from the inner housing to define a path for air between the openings. In a preferred embodiment, a cooling means is located within the outer housing to force exterior air along the path, allowing heat absorbed by the inner housing to be dissipated.

Abstract: A direct drive servovalve wherein rotational motion of a drive motor rotor is converted into linear motion of a spool valve. The drive motor is mounted upon the valve housing through utilization of the outer surface of a bearing which supports the rotor shaft of the drive motor. The bearing fits within a recess provided in the surface of the housing and protrudes above the housing to be received within an additional recess defined within the drive motor.

Abstract: A multipurpose keyboard incorporating an electronic pressure sensing device, a digitizer pad featuring spatial minimization of a pressure contact area capable of locating the leading and trailing edges of the pressure contact area is described. A processor coupled to the electronic pressure sensing device is programmed to sense when various regions on a simple, fully interchangeable template overlay and the underlying electronic pressure sensing device are depressed. The sensed region is associated by the processor with a particular key identification on the template overlay. The variation of the resistance in the digitizer pad enables the processor to detect the actuation of more than one key on the template overlay at the same time, thereby defecting key rollover. A method of fabrication for a multipurpose keyboard is also described.

Abstract: An apparatus and method of maintaining the viability of animal organs, and in particular human organs, by controlling the storage temperature of the organ and providing the organ with sufficient nutrients and oxygen, while also monitoring and maintaining the organ's transmembrane potential within a predefined range.

Abstract: An object is exposed to penetrating radiation at each of a plurality of partial rotations of the object. Radiation transmitted through the object strikes a separate sheet of radiographic film for each exposure to record an entire radiographic image of the object for each angular orientation. The radiographic images are digitized and stored in the memory of a computer. Each digitized image is registered by determining the error of rotation and center of rotation for each digitized image and correcting for the error of rotation by rotation and translation of pixel values. One or more displacement values are selected in correspondence with one or more desired levels of view and the digitized images are displaced according to the selected displacement values. The displaced images are then combined to produce images representative of the selected levels of view. Image planes non-parallel to the film image plane may be selected and interactive image enhancement and manipulation are provided.

Abstract: An infusion pump system comprising means for measuring internal diameter of an associated pump supply tube formed from a flexible material, such as plastic or rubber. The means for measuring internal diameter may comprise an ultrasound system including at least one transmiter and one receiver, as well as an evaluation unit. Alternatively, a mechanical system may be employed in the form of a counterpressure unit arranged perpendicular to the axis of the supply tube and including a movable plunger and an abutment surface for compression of the supply tube to be measured. A measurement and evaluation unit associated with the counterpressure unit determines the distance traversed by the movable plunger. The internal diameter of the tube may be determined by generating a force-displacement diagram. In accordance with one embodiment, the movable plunger is a pumping rod of a linear peristaltic pump.

Abstract: A system D interfaces with a multiplicity of individual terminals T1-Tn of a telephone network facility C, at the terminals callers are prompted by voice-generated instructions to provide digital data that is identified for positive association with a caller and is stored for processing. The caller's identification data is confirmed using various techniques and callers may be ranked and accounted for on the basis of entitlement, sequence or demographics. Callers are assigned random designations that are stored along with statistical and identification data. A break-off control circuit may terminate the computer interface aborting to a terminal for direct communication with an operator. Real-time operation processing is an alternative to stored data. The accumulation of stored data (statistical, calling order sequence, etc.) is variously processed and correlated as with developed or established data to isolate a select group or subset of callers who can be readily identified and reliably confirmed.

Abstract: A flowmeter has an elongated housing with a fluid inlet, a fluid outlet and an axial passage therebetween. The fluid passage contains a flow splitter section and is connected to a flow sensor assembly. The flow splitter section is formed by a surface defining a longitudinal fluid path and a flow splitter secured in the fluid path, so as to form an annular gap between the surface of the fluid path and the flow splitter. The surface of the fluid path defines a tapered calibration bore. The flow splitter has a tapered calibration section comprising the upstream portion of the flow splitter and at least one tapered expansion section comprising the downstream portion of the flow splitter. The taper of the calibration section is substantially parallel to the taper of the calibration bore, and the taper of the expansion section diverges away from the taper of the calibration bore.

Abstract: A method of making group I-III-VI compound semiconductors such as copper indium diselenide for use in thin film heterojunction photovoltaic devices. A composite film of copper, indium, and possibly other group IIIA elements, is deposited upon a substrate. A separate film of selenium is deposited on the composite film. The substrate is then heated in a chamber in the presence of a gas containing hydrogen to form the compound semiconductor material.

Abstract: In an oven having a plurality of heat sources for cooking by heating an object of cooking inside an oven chamber, the capacities of said heat sources are arranged to be capable of independent control. The operating time of the heat sources is arranged to be set by a timer, wherein heat sources not operated or operated at a reduced capacity are operated substantially at their full capacities for a predetermined period of time after a cooking time set by the timer has elapsed.

Abstract: Disclosed is a direct drive servovalve which includes a drive motor mounted upon a housing for a reciprocally disposed spool valve wherein the rotor of the drive motor engages the spool valve. The rotational motion of the rotor is converted into linear motion in the spool-valve. The rotor of the drive motor carries a cam shaped flat washer which has surfaces engaging stop means defined by the valve housing.

Abstract: A direct drive servovalve having a stator and rotor mounted upon a housing within which a spool valve is reciprocally disposed for engagement with the rotor and movement thereby in response to the application of appropriate electrical signals. The stator assembly is adjustable and after appropriate adjustment there is provided a retainer means secured to the closed end of an isolation tube for clamping the stator assembly in place relative to the rotor assembly of the moored motor. The clamping assembly includes an annular member having a downwardly depending skirt which engages the stator. The annular member is held in place by a retainer ring threadably secured to the outer surface of the isolation tube or alternatively behind fasteners which are threadably received by the closed end of the isolation tube. A separate non load bearing housing cover is positioned over the motor.

Abstract: In a railway signalling system, the length of a vehicle or train is computed by on board measurement of the distance travelled between detecting the passage of the front of the vehicle or train past a fixed point and detecting the passage of the rear of the vehicle or train past the same fixed point or a fixed point a known distance from the first.