Patent application number | Description | Published |
20080196429 | Pulse Electrothermal And Heat-Storage Ice Detachment Apparatus And Method - Systems and methods for pulse electrothermal and heat-storage ice detachment. A pulse electrothermal ice detachment apparatus includes one or more coolant tubes, and optionally, fins in thermal contact with the coolant tubes. The tubes and/or fins form a resistive heater. Apparatus applies electrical power to the resistive heater, generating heat to detach ice from the tubes and/or the fins. A freezer unit forms a heat-storage icemaking system having a compressor and a condenser for dissipating waste heat, and coolant that circulates through the compressor, the condenser and a coolant tube. The coolant tube is in thermal contact with an evaporator plate. A tank, after the compressor and before the condenser, transfers heat from the coolant to a heating liquid. The heating liquid periodically flows through a heating tube in thermal contact with the evaporator plate, detaching ice from the evaporator plate. | 08-21-2008 |
20080223842 | Systems And Methods For Windshield Deicing - Cost efficient, lightweight and rapid windshield deicing systems and methods are disclosed. The systems utilize step-up converters or inverters, or dual-voltage batteries, to provide a voltage high enough to deice a windshield in less than thirty seconds. | 09-18-2008 |
20120234816 | Systems And Methods For Windshield Deicing - Cost efficient, lightweight and rapid windshield deicing systems and methods are disclosed. The systems utilize step-up converters or inverters, or dual-voltage batteries, to provide a voltage high enough to deice a windshield in less than thirty seconds at ambient temperatures above −10 C. Some of the disclosed systems include sensors for deicing element and ambient temperatures, and in some embodiments windspeed. All embodiments have a controller for limiting deicing time to that sufficient to melt a boundary layer of ice. The controller of embodiments with sensors computes deicing time as a function of ambient temperature. Embodiments interact with wiper systems to enable wipers to clear ice once the boundary layer is melted. | 09-20-2012 |
Patent application number | Description | Published |
20080246577 | Method For Making Magnetic Components With N-Phase Coupling, And Related Inductor Structures - Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core. | 10-09-2008 |
20080280340 | Method and Apparatus for Bacterial Transformation by Electroporation with Waveforms Incorporating Pulsed Rf Between 3 and 125 Mhz - A method and apparatus for electroporation includes placing a mixture of bacterial suspension and transforming DNA into an electroporation cuvette. The resulting sample is subjected through a current-limiting device to a complex 5 waveform including a burst of high-voltage radio-frequency current, which in some embodiments is superimposed on a biphasic high-voltage DC pulse, and in other embodiments on a high-voltage lower-frequency AC burst. The total waveform has at least an initial portion greater than eleven thousand volts per centimeter of electrode spacing, and a later portion in some embodiments is reduced to less than thirty percent 10 of magnitude of the initial portion. Transformed bacteria are selected by culture in selective medium in an embodiment. The high-voltage radio-frequency current is between 3 and 125 MHz, and in an embodiment is 24 MHz. | 11-13-2008 |
20090179723 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 07-16-2009 |
20090188658 | Compact Helical Heat Exchanger With Stretch To Maintain Airflow - A heat exchanger for exchanging heat between gasses such as air and a liquid or gaseous coolant has narrow spacing between exchanger surfaces for high efficiency. To avoid undue obstruction of gas flow due to ice buildup on the exchanger surfaces, the heat exchanger is equipped with sensors to monitor the gas flow and an actuator that widens the spacing between exchanger surfaces such that gas flow remains unimpeded. Embodiments provide for defrosting of the exchanger surfaces when an limit on spacing of exchanger surfaces is reached, and for relaxing the spacing to the original narrow spacing when defrosting is completed. | 07-30-2009 |
20090250449 | System And Method For Deicing Of Power Line Cables - A system and method for deicing power transmission cables divides the cable into sections. Switches are provided at each end of a section for coupling the conductors together in parallel in a normal mode, and at least some of the conductors in series in an anti-icing mode. When the switches couple the conductors in series, an electrical resistance of the cable section is effectively increased allowing self-heating of the cable by power-line current to deice the cable; the switches couple the conductors in parallel for less loss during normal operation. In an alternative embodiment, the system provides current through a steel strength core of each cable to provide deicing, while during normal operation current flows through low resistance conductor layers. Backup hardware is provided to return the system to low resistance operation should a cable overtemperature state occur. | 10-08-2009 |
20110279212 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 11-17-2011 |
20130069755 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 03-21-2013 |
20130113596 | Method For Making Magnetic Components With N-Phase Coupling, And Related Inductor Structures - Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core. | 05-09-2013 |
20130176010 | High-Efficiency Base-Driver Circuit For Power Bipolar Junction Transistors - A system or module has a 3-or-more layer current-controlled switching device, such as a bipolar power transistor, for driving a load and a base driver circuit coupled to drive it. The driver has a buck-converter configuration for efficiently driving the switching device. In an embodiment, the driver has an inductor, the inductor having a first terminal coupled to a base of the bipolar junction transistor, a high-side switching device coupled to drive a second terminal of the inductor; and a rectification device coupled to the second terminal of the inductor. The driver also has a control circuit for providing a sequence of pulses through the high-side switching device when a control signal indicates the bipolar junction transistor is to be turned on. | 07-11-2013 |
20130187737 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 07-25-2013 |
20130222099 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 08-29-2013 |
20130229249 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 09-05-2013 |
20130328165 | MICROFABRICATED MAGNETIC DEVICES AND ASSOCIATED METHODS - A magnetic device includes a semiconductor wafer, a spiral winding, and a magnetic core. The spiral winding forms a plurality of turns and is disposed in a channel of the semiconductor wafer. The magnetic core is disposed at least partially in the channel of the semiconductor wafer and at least partially surrounds the plurality of turns. A width of the spiral winding optionally varies such that a respective width of an edge turn is smaller than a respective width of a middle turn. The channel is formed, for example, by a method including (1) patterning a resist layer on the semiconductor wafer using a mask including angularly extending compensation features, and (2) anistropically etching the semiconductor wafer to form the channel. | 12-12-2013 |
20140240074 | Systems And Methods For Making Radially Anisotropic Thin-Film Magnetic Torroidal Cores, And Radially Anisotropic Cores Having Radial Anisotropy, And Inductors Having Radially Anisotropic Cores - A radially anisotropic toroidal magnetic core is fabricated by a method including providing apparatus having a first magnet for providing a radial magnetic field extending across a cavity from an axial spindle to a surrounding second magnetic element, placing a substrate in the cavity, the substrate having a hole fitting around the head of the spindle; and sputter-depositing a film of ferromagnetic material onto the substrate. An alternative fabrication uses a similar fixture to impose magnetic anisotropy by annealing a previously-formed toroidal core. A particular fixture adapted for deposition by electroplating or for applying anisotropy by annealing pre-formed cores applies magnetic fields symmetrically from above and below the cores. Also described are the radially anisotropic core produced by the method, and an inductor having a coil wound on the radially anisotropic core. | 08-28-2014 |
20140247104 | Method For Making Magnetic Components With M-Phase Coupling, And Related Inductor Structures - An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg. | 09-04-2014 |