Patent application number | Description | Published |
20120021224 | GRAPHENE/GRAPHENE OXIDE PLATELET COMPOSITE MEMBRANES AND METHODS AND DEVICES THEREOF - Methods for making composite membranes (graphene/graphene oxide platelet composite membranes) and methods of aligned transfer of such composite membranes to substrates are shown. Compositions and devices that include such composite membranes are further shown. | 01-26-2012 |
20120273455 | METHODS FOR ALIGNED TRANSFER OF THIN MEMBRANES TO SUBSTRATES - The present invention relates to thin membranes (such as graphene windows) and methods of aligned transfer of such thin membranes to substrates. The present invention further relates to devices that include such thin membranes. | 11-01-2012 |
20140021163 | GRAPHENE WINDOWS, METHODS FOR MAKING SAME, AND DEVICES CONTAINING SAME - The present invention relates to graphene windows and methods for making same. One method comprises selecting a high purity metal foil, growing a layer of graphene on a first face of the metal foil, patterning the second face of the graphene-modified foil with a polymer, wherein the second face of the graphene-modified foil has an exposed region and etching the second face of the graphene-modified foil in the exposed region until exposing the first layer of graphene. | 01-23-2014 |
20140021165 | GRAPHENE WINDOWS, METHODS FOR MAKING SAME, AND DEVICES CONTAINING SAME - The present invention relates to graphene windows and methods for making same. The present invention further relates to devices that include such graphene windows. | 01-23-2014 |
20140124340 | ELECTRICALLY-CONDUCTIVE MEMBRANE SWITCH - An improved electrically conductive membrane switch, such as, for example, an improved graphene membrane switch. The improved electrically conductive membrane switch can be used in applications requiring in excess of 100 volts. | 05-08-2014 |
20140271238 | GRAPHENE-TROUGH PUMP SYSTEMS - The present invention relates to pump systems having graphene or other atomically thin electrically conductive materials supported by trough-shaped cavities. | 09-18-2014 |
20150108872 | Membrane-Based Nano-Electromechanical Systems Device And Methods To Make And Use Same - Nano-electromechanical systems (NEMS) devices that utilize thin electrically conductive membranes, which can be, for example, graphene membranes. The membrane-based NEMS devices can be used as sensors, electrical relays, adjustable angle mirror devices, variable impedance devices, and devices performing other functions. | 04-23-2015 |
20150115767 | Membrane-Based Nano-Electromechanical Systems Device And Methods To Make And Use Same - Nano-electromechanical systems (NEMS) devices that utilize thin electrically conductive membranes, which can be, for example, graphene membranes. The membrane-based NEMS devices can be used as sensors, electrical relays, adjustable angle mirror devices, variable impedance devices, and devices performing other functions. | 04-30-2015 |
20150180372 | Membrane-Based Nano-Electromechanical Systems Device And Methods To Make And Use Same - Nano-electromechanical systems (NEMS) devices that utilize thin electrically conductive membranes, which can be, for example, graphene membranes. The membrane-based NEMS devices can be used as sensors, electrical relays, adjustable angle mirror devices, variable impedance devices, and devices performing other functions. | 06-25-2015 |
Patent application number | Description | Published |
20110099213 | System And Method For Processing A Signal With A Filter Employing FIR And IIR Elements - A system and method for processing a signal with a filter employing FIR and/or IIR elements. The required controller function is decomposed into primary FIR and/or IIR elements and a compensation filter is provided to address the latency in the primary elements, which would result in undesired operation of the filter. Several configurations of suitable filters are discussed, including multi-rate filters and filters with reduced power requirements. | 04-28-2011 |
20120293348 | System and Method For Digitally Correcting Mismatches In Multipath ADCs - A system and method of reducing the effects of nonidealities of ADCs in multipath converters is disclosed. The system and method employs a variety of measure and correction blocks to determine statistical properties of the output stream of the multipath converter and to apply corrections to the operation of the subconverters of the multipath converter based upon differences in the measured statistics and expected target values, either explicit or implicit, for those statistics. A variety of examples of possible measure and configuration blocks are disclosed, as is the cascading of the measure and correction blocks to correct multiple errors in the output of the multipath converter. Feedforward (purely digital) and feedback (analog and digital) solutions are both disclosed. | 11-22-2012 |
20130207822 | System and Method For High Speed Analog to Digital Data Acquistion - An analog to digital conversion system is disclosed which converts an analog signal to a digital representation thereof at a first sampling rate by distributing the analog signal to at least two signal paths, at least one signal path including a limiting mixer to mix the signal with a respective selected square wave and a smoothing (low pass) filter to filter the mixed signal before providing the mixed and filtered signal to a subconverter, the subconverter having a sampling rate less than the first sampling rate, and a digital matrix filter to combine the digital output of each subconverter to form a digital representation of the analog signal as sampled at the first rate. | 08-15-2013 |
20130300592 | Device, System and Method For Digital Pulse-Density Modulation - A novel pulse density modulator is disclosed which includes at least one sigma delta modulator operating at a clock rate selected to provide a pre-selected timing resolution for sampling an input signal. The sigma delta modulator employs a hysteresis element to reduce the average transition rate of the output signal of the sigma delta modulator to reduce switching losses. The novel pulse density modulator can provide at least a two or three level output, as desired. | 11-14-2013 |
20140164459 | SYSTEM AND METHOD FOR PROCESSING A SIGNAL WITH A FILTER EMPLOYING FIR AND IIR ELEMENTS - A system and method for processing a signal with a filter employing FIR and/or IIR elements. The required controller function is decomposed into primary FIR and/or IIR elements and a compensation filter is provided to address the latency in the primary elements, which would result in undesired operation of the filter. Several configurations of suitable filters are discussed, including multi-rate filters and filters with reduced power requirements. | 06-12-2014 |
20150015428 | SYSTEM AND METHOD FOR HIGH SPEED ANALOG TO DIGITAL DATA ACQUISITION - An analog to digital conversion system is disclosed which converts an analog signal to a digital representation thereof at a first sampling rate by distributing the analog signal to at least two signal paths, at least one signal path including a limiting mixer to mix the signal with a respective selected square wave and a smoothing (low pass) filter to filter the mixed signal before providing the mixed and filtered signal to a subconverter, the subconverter having a sampling rate less than the first sampling rate, and a digital matrix filter to combine the digital output of each subconverter to form a digital representation of the analog signal as sampled at the first rate. | 01-15-2015 |
Patent application number | Description | Published |
20090256026 | Tilt Actuation for a Rotorcraft - An aircraft is equipped with hingeless rotors on tilting nacelles, and the tilt angles of the nacelles are controlled using either or both of an actuator and a mast moment generated by a hingeless rotor. An aircraft with two or more rotors on tilting nacelles can achieve control of yaw orientation by differential tilt of its nacelles or masts. Hingeless rotors can be manipulated to control a tilt angle of a mast by changing the rotor blade pitch to produce a mast moment. The rotor and nacelle tilt of a tiltrotor rotorcraft can be controlled and effected in order to manipulate the yaw orientation and flight mode of a rotorcraft such as a tiltrotor. The use of mast moment to control nacelle tilt angle can reduce tilt actuator loads and allows for the control of nacelle tilt even in the event of an actuator failure. | 10-15-2009 |
20100127119 | ROTORCRAFT ENGINE AND ROTOR SPEED SYNCHRONIZATION - Systems and methods are provided in which an electrical control system independently effects acceleration of both driven and driving elements of a clutch to engage each other. In preferred embodiments the clutch is not a friction clutch, but a dog clutch, and forms part of a drive drain of a rotorcraft. A second clutch can be used, along with a mechanical interlock to prevent simultaneous engagement of the clutches. Speeds of the driven and driving elements can be sensed, and altered using at least one of a rotor, a brake, a generator, an electric motor, and a combustion motor. In rotorcraft embodiments, the gearbox can have a neutral condition in which no power is transmitted from the engine to the rotor | 05-27-2010 |
20100150719 | Swashplateless rotorcraft with fault tolerant linear electric actuator - An electric linear actuator is disposed to pitch a blade of a hingeless, swashplateless rotor in rotary motion. This actuator can be equipped with an electric motor advantageously made fault tolerant by winding the motor for at least 4, 5, 6, 8, or even 12 phases. Rotational motion of the electric motor is preferably converted to a translatory linear actuator output motion using a planetary roller screw coupling the rotation of the motor with pitch of the blade. The output link of the actuator can be advantageously coupled to the planetary roller screw using an internal spherical joint providing an isolated load path through the actuator. It is contemplated that a preferred rotorcraft having an electric blade pitch actuator might also be equipped with a controller that could provide the vehicle with individual blade control, in which the pitch of any rotor blade can be controlled independently of the others. | 06-17-2010 |
20140256495 | COMPACT TORQUE-TRANSMITTING GEARBOX WITH HIGH REDUCTION RATIO - A harmonic drive has an outer gear, an elliptical follower hub, and an outer chain coupled to the follower hub, and having teeth that mate with the outer gear. Preferred embodiments further include an inner chain disposed such that the follower hub is functionally interposed between the inner and outer chains. | 09-11-2014 |