Mcgeoch
Andrew Mcgeoch, Dyce GB
Patent application number | Description | Published |
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20150034329 | Downhole Tool and Method - A downhole tool ( | 02-05-2015 |
20150176373 | Inflow Control Device Having Elongated Slots for Bridging Off During Fluid Loss Control - A sand screen joint screens borehole fluid during production and bridges off loss control fluid during loss control. The joint has a basepipe having a bore and defining at least one elongated slot therein. Filter media is disposed on the basepipe and screens the borehole fluid. At least one flow device is disposed on the basepipe and restricts communication of the borehole fluid from the filter media to the at least one elongated slot. During the production, the at least one elongated slot communicates the borehole fluid from the at least one flow device to the bore. During the loss control, the at least one elongated slot bridges off with particulate from the loss control fluid communicated from the bore to the at least one flow device. | 06-25-2015 |
Andrew Mcgeoch, Loughborough GB
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20150226040 | Leak-Off Assembly for Gravel Pack System - A gravel pack assembly for a borehole has first and second joints and a foil. The basepipes of the joints connect end-to-end, and both of the basepipes having filters for filtering fluid passage from a borehole into bores of the basepipes. Transport tubes are disposed along the first and second joint, and a jumper tube expands across the connected ends of the basepipes and connects the transport tubes together. The foil encloses an area across the connected ends. The foil has an external surface defining an annulus thereabout with the borehole. The foil has end rings abutting the filters of the joints. At least a section of the foil leaks fluid from the borehole to the area enclosed by the foil, and at least a filter portion of the assembly filters the leaked fluid from the area to at least one of the first and second bores. | 08-13-2015 |
Catherine Mcgeoch, Amherst, MA US
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20150269124 | SAMPLING FROM A SET OF SPINS WITH CLAMPING - The systems, devices, articles, and methods generally relate to sampling from an available probability distribution. The samples maybe used to create a desirable probability distribution, for instance for use in computing values used in computational techniques including: Importance Sampling and Markov chain Monte Carlo systems. An analog processor may operate as a sample generator, for example by: programming the analog processor with a configuration of the number of programmable parameters for the analog processor, which corresponds to a probability distribution over qubits of the analog processor, evolving the analog processor, and reading out states for the qubits. The states for the qubits in the plurality of qubits correspond to a sample from the probability distribution. Operation of the sampling device may be summarized as including updating a set of samples to include the sample from the probability distribution, and returning the set of samples. | 09-24-2015 |
David Mcgeoch, Coventry, Warwickshire GB
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20150307084 | HYBRID ELECTRIC VEHICLE CONTROL SYSTEM AND METHOD - The present invention relates to a control system for a hybrid electric vehicle having an engine ( | 10-29-2015 |
Malcolm W. Mcgeoch, Little Compton, RI US
Patent application number | Description | Published |
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20090212241 | LASER HEATED DISCHARGE PLASMA EUV SOURCE - A self-magnetically confined lithium plasma which also may have an applied axial magnetic field is irradiated at sub-critical density by a carbon dioxide laser to generate extreme ultraviolet photons at the wavelength of 13.5 nm with high efficiency, high power and small source size. | 08-27-2009 |
20110089834 | Z-PINCH PLASMA GENERATOR AND PLASMA TARGET - A configuration of two opposed electrodes with conical depressions and symmetry around an axis along which there is an applied steady magnetic field, is supplied with a pulsed voltage and current to create an azimuthally very uniform pre-ionization cylinder of a working gas as a precursor to stable and accurate compression of the working gas into a Z-pinch plasma photon source or plasma target for laser-pumped photon sources. A further compound hollow electrode configuration permits the generation of a cool, dense, core plasma surrounded and compressed by a hot liner plasma. Modulation of the radial density profile within this core can provide optical guiding for a laser-pumped recombination laser. | 04-21-2011 |
20120146510 | PULSED DISCHARGE EXTREME ULTRAVIOLET SOURCE WITH MAGNETIC SHIELD - A magnetically shielded, efficient plasma generation configuration for a pulsed discharge extreme ultraviolet (EUV) light source comprises two opposed convex electrodes mounted with axes parallel to a static magnetic field. A limiter aperture disposed between the electrodes, in conjunction with the field lines, defines a hollow plasma cylinder connecting the electrodes. A high pulsed voltage and current compresses the plasma cylinder and its interior magnetic field onto the electrode surfaces to create a magnetic insulating layer at the same time as propelling the working gas from each side toward the space between the electrode tips. The plasma then collapses radially in a three-dimensional compression to form a dense plasma on the axis of the device with radiation of extreme ultraviolet light. | 06-14-2012 |
20130153568 | INDUCTION HEATED BUFFER GAS HEAT PIPE FOR USE IN AN EXTREME ULTRAVIOLET SOURCE - The succesful use of lithium vapor in an extreme ultraviolet (EUV) light source depends upon an intense localized heat source at the center of conical structures that evaporate, condense and re-supply liquid lithium. Induction heating of a hollow structure with toroidal topology via an internal helical field coil, can supply intense heat at its innermost radius. The resulting slim radio frequency heated structure has high optical transmission from a central EUV producing plasma to collection mirrors outside of the structure, improving EUV source efficiency and reliability. | 06-20-2013 |
20160007433 | EXTREME ULTRAVIOLET SOURCE WITH MAGNETIC CUSP PLASMA CONTROL - A laser-produced plasma extreme ultraviolet source has a buffer gas to slow ions down and thermalize them in a low temperature plasma. The plasma is initially trapped in a symmetrical cusp magnetic field configuration with a low magnetic field barrier to radial motion. Plasma overflows in a full range of radial directions and is conducted by radial field lines to a large area annular array of beam dumps. | 01-07-2016 |
Paul Duncan Mcgeoch, La Jolla, CA US
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20160045733 | METHOD AND SYSTEM FOR ALTERING BODY MASS COMPOSITION USING GALVANIC VESTIBULAR STIMULATION - A device and method are provided for altering body mass composition in a human subject by applying galvanic vestibular stimulation (GVS) using electrodes placed in electrical contact with the subject's scalp at a location corresponding to each of the subject's left and right vestibular systems. The current source include a feedback loop for measuring a resistance across the subject's scalp and adjusting a voltage output to maintain a constant current across the subject's scalp. GVS may be applied for a predetermined period of time at regular intervals. | 02-18-2016 |