Abstract: A heat sink/heat spreader structure utilizing thermoelectric effects to efficiently transport thermal energy from a variety of heat sources including integrated circuits and other electronic components. A method for manufacturing the heat sink/spreader is also disclosed.

Abstract: The relay system obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.

Abstract: An apparatus and method for inspecting and sorting articles such as fruit and vegetables in which the articles are presented, on a conveyor, under a viewing device and classified. A take-off position is determined from the classification and the article is removed by means of an independently actuated ejector mechanism.

Abstract: The apparatus which is located separately from the RTD includes means for measuring the resistance of a plurality of RTDs present at a selected site, the RTDs being those of a number of different RTD types. The module includes means for storing the resistance/temperature map for each of the plurality of RTDs and for determining the temperatures associated with said resistances from the resistance/temperature maps. The resulting plurality of temperatures for each RTD, respectively, is then transmitted in a known order to a remote protective relay which determines the correct temperature for each RTD connected to the module.

Abstract: The error compensating system and method is used in electric power monitoring systems, e.g. protective relays, and includes a test unit for applying a test signal to the front end of a data acquisition section of the power monitoring system and a phase reference module which converts the test signal to a square wave having falling and rising edges corresponding to transitions between the positive and negative portions of the test signal. A programmable logic device determines the zero crossings of the sampled digital signal from the data acquisition system and then determines the time difference between a falling edge of the module output signal and the zero crossing of the sampled digital signal. The time difference is representative of the phase shift produced by the data acquisition components. A compensation circuit adjusts the digitally sampled signals with the amount of the determined phase shift.

Abstract: A method utilizing gray-tone exposure of a class of thick negative photo-sensitized epoxy resists from the substrate side of a transparent substrate and development methods that rely upon a physical distinction between polymerized (solid) and unpolymerized (liquid) photoresist at elevated temperatures may be used to fabricate 3-D structures in the photo-sensitized epoxy. Such structures may exhibit smoothly-varying topographic features with thicknesses as great as 2 mm.

Abstract: The system includes a plurality of protection application elements to accomplish various power system protection functions, including for example line protection, line fault location, current direction determination, breaker protection and synchronism check, among others. The system includes local sources of current and voltage information for the protective functions as well as a receiving section for receiving such current and voltage values from a remote source, such as another protection device, as well as other necessary input information for the protective functions. A selection logic section is responsive to the output of the protective function elements, as well as the local and remote data to determine whether the primary or local sources are to be used. The outputs of the protective function elements are used by an output section to control circuit breakers and the like and are also transmitted, with the local and remote source quantities, to other protective devices.

Abstract: The system for automatically dispensing medications or other medical elements includes several groupings, i.e. vaults, of storage members, each vault containing approximately 100 individual cartridges, which each contain packages of unit-of-use doses of a given medication or other medical supply, such as syringes. Each storage member includes an ejector which ejects selected medications/supplies to a supply trough. The packages in the trough are moved to a central collator, which dispenses them to a bin receptacle which has been moved underneath the collator and which is typically identified with a particular patient. Information concerning medications/supplies for a particular patient is stored in a system database and used to determine the particular medications/supplies dispensed into a given bin. Bar coding is used to maintain control over the bins, and the medications, forming a closed information/control system.

Abstract: The system obtains the three phase voltages on the power line VA, VB and VC, either from a local primary or local alternative source. The selected local source voltages are then applied through switches, respectively, which are normally closed but are open in the event that the associated pole of each voltage phase is open. The voltages from the closed switches are applied to a calculating circuit which produces a composite of the three voltages in accordance with a preselected formula. The composite voltage output is then normalized and applied to a conventional frequency determination (estimating) circuit. This output is an accurate system frequency for use by the protective relay.

Abstract: In a three terminal power line current differential protection system, all three phase current values (IA, IB and IC) are obtained from all three terminals. The current values for each phase are processed in three successive processing operations, using in turn the current values from each terminal as local current values and the combination of the other two terminal current values in each case as the remote current values. The resulting local and remote current values are then processed against preselected values which establish a restrain region in the current ratio (alpha) plane. Current values for each set of local and combined remote currents which result in the ratio being within the restrain region result in a blocking signal while current values which result in a ratio outside of the region result in a tripping signal. If the outputs of the three processing operations agree, then that signal is the system output.

Abstract: An emergency breathing apparatus for breathing under water particularly when using a kayak (1) comprising a single flexible tub (4) having an internal volume which is less than normal lung capacity and having an inlet adjacent one end of said tube which is arrange to be maintained above water level and open to ingress of air and adjacent the other end of said tube in close proximity a mouthpiece an a valve means operable by a user to inhibit flow of water into the breathing means in a closed condition and to permit breathing when in an open condition.

Abstract: The loading apparatus includes a tray assembly which receives radioactive seeds and spacer elements from containers thereof. The seeds and spacers move into a receiving portion of the apparatus. Guide wall assemblies are located between the wells in the tray assembly and a funnel opening which extends through the tray assembly at the front end thereof. Positioned beneath the funnel opening and removably attached to the tray assembly is a visualization and positioning assembly which has a vertical slot therein for receiving seeds and spacers. The seeds and spacers move by gravity through the funnel opening into the slot. A portion of the visualization assembly is transparent, permitting a visual inspection of the seed/spacer lineup in the slot. A control element at the lower end of the visualization assembly releases the seeds and spacers from the visualization member into a hollow needle located therebelow.

Abstract: A stand for elevating the wheel of a motorcycle, which includes a pair of interconnected parallel side plates, including substantially coplanar adjacent flat surfaces. A lever moves the stand from a first non-operative position on one flat surface to a second operative position on the second flat surface, elevating the cycle and further stabilizing the stand in this position.

Abstract: A centrifuge rotor including a sample carrier (1) enclosing within an outer housing (7,8) and being rotatable about a principal axis of rotation of the rotor, the sample carrier (1) having a peripheral zone for holding sample tubes (6) in an orientation parallel to the said axis when at rest and the sample carrier being capable of deflecting to enable sample tubes (6) to swing out under the effect of centrifugal force. The swinging out of the tubes (6) is constrained and controlled by the arrangement of the sample carrier (1) and contact between the tubes (6) and outer housing (7,8).