Patent application number | Description | Published |
20080314447 | Single P-N Junction Tandem Photovoltaic Device - A single P-N junction solar cell is provided having two depletion regions for charge separation while allowing the electrons and holes to recombine such that the voltages associated with both depletion regions of the solar cell will add together. The single p-n junction solar cell includes an alloy of either InGaN or InAlN formed on one side of the P-N junction with Si formed on the other side in order to produce characteristics of a two junction (2J) tandem solar cell through only a single P-N junction. A single P-N junction solar cell having tandem solar cell characteristics will achieve power conversion efficiencies exceeding 30%. | 12-25-2008 |
20090173373 | Group III-Nitride Solar Cell with Graded Compositions - A compositionally graded Group III-nitride alloy is provided for use in a solar cell. In one or more embodiment, an alloy of either InGaN or InAlN formed in which the In composition is graded between two areas of the alloy. The compositionally graded Group III-nitride alloy can be utilized in a variety of types of solar cell configurations, including a single P-N junction solar cell having tandem solar cell characteristics, a multijunction tandem solar cell, a tandem solar cell having a low resistance tunnel junction and other solar cell configurations. The compositionally graded Group III-nitride alloy possesses direct band gaps having a very large tuning range, for example extending from about 0.7 to 3.4 eV for InGaN and from about 0.7 to 6.2 eV for InAlN. | 07-09-2009 |
20100095998 | LOW RESISTANCE TUNNEL JUNCTIONS FOR HIGH EFFICIENCY TANDEN SOLAR CELLS - A semiconductor structure comprises a first photovoltaic cell comprising a first material, and a second photovoltaic cell comprising a second material and connected in series to the first photovoltaic cell. The conduction band edge of the first material adjacent the second material is at most 0.1 eV higher than a valence band edge of the second material adjacent the material. Preferably, the first material of the first photovoltaic cell comprises ln].χAlχN or lnt_yGayN and the second material of the second photovoltaic cell comprises silicon or germanium. Alternatively, the first material of the first photovoltaic cell comprises InAs or InAsSb and the second material of the second photovoltaic cell comprises GaSb or GaAsSb. | 04-22-2010 |
20120031491 | Single P-N Junction Tandem Photovoltaic Device - A single P-N junction solar cell is provided having two depletion regions for charge separation while allowing the electrons and holes to recombine such that the voltages associated with both depletion regions of the solar cell will add together. The single p-n junction solar cell includes an alloy of either InGaN or InAlN formed on one side of the P-N junction with Si formed on the other side in order to produce characteristics of a two junction (2J) tandem solar cell through only a single P-N junction. A single P-N junction solar cell having tandem solar cell characteristics will achieve power conversion efficiencies exceeding 30%. | 02-09-2012 |
Patent application number | Description | Published |
20100037867 | System for Metering a Fuel Supply - A system for metering fuel to an engine. The system includes a fuel metering valve having a throttled inlet and a throttled outlet. The system also provides regulation of redundant pump supplies of fuel to the engine. The throttling of the inlet to the fuel metering valve is provided by a valve that also functions to selectively couple a second fuel pump to the fuel metering valve. | 02-18-2010 |
20100037961 | Flow Compensated Proportional Bypass Valve Combined With a Control Valve - A common regulator valve is provided for a variable displacement pump fuel metering scheme in which the common regulator valve both controls working output to a pump actuator to control displacement of the variable displacement pump and also to control bypass of excess fuel flow. The regulator valve also includes a differential piston which generates a compensation force off of the bypass flow in order to compensate for changes in spring force and flow reaction force at different system pressures and operational states. As a result, errors in the metered fuel flow can be either eliminated or substantially reduced. | 02-18-2010 |
20110162724 | Dual-Pump Supply System With Bypass-Controlled Flow Regulator - A dual-supply fluid distribution system includes a first pump having an inlet and an outlet. The first pump is configured to supply a first fluid flow. A second pump has an inlet and an outlet, and is configured to supply a second fluid flow. A check valve is coupled between the first and second pump outlets. The check valve is configured to combine the second fluid flow with the first fluid. A bypass valve is coupled to the outlet of the first pump. The bypass valve has an integral pilot valve and is configured to permit fluid flow from the pump outlets in excess of the fluid demand to recirculate back to the first and second pump inlets. The bypass valve and integral pilot valve are configured to cause the check valve to open when the flow of fluid through the bypass valve is below a threshold amount. | 07-07-2011 |
20130323050 | Electrohydraulic Propeller Governor - A propeller governor for controlling blade pitch of a variable pitch propeller has a hydraulic control circuit coupled to the propeller to change blade pitch in response to hydraulic pressure. The hydraulic control circuit has a first pressure path configured to adjust blade pitch within a first range of blade pitch, and a second, different pressure path configured to adjust blade pitch within a second range of blade pitch. An electrohydraulic servo valve of the governor is configured to adjust hydraulic pressure in the first pressure path to adjust blade pitch within the first range and to adjust hydraulic pressure in the second pressure path to adjust blade pitch within the second range. | 12-05-2013 |
Patent application number | Description | Published |
20150363726 | APPARATUS AND METHOD FOR AUTOMATICALLY ALLOCATING THE TIME OF ASSETS - A method for automatically allocating the time of an asset is disclosed. Such a method includes tracking proximity of a first asset relative to a second asset. The first asset may include, for example, a work order or one or more individuals. The second asset may include, for example, a piece of equipment, a room, or a work area. The method determines a duration of time the first asset is deemed to be proximate the second asset. In accordance with the duration of time, the method automatically allocates time of the second assert to at least one of the first asset, an entity associated with the first asset, and a project associated with the first asset. A corresponding system and computer program product are also disclosed herein. | 12-17-2015 |
20150363727 | APPARATUS AND METHOD FOR AUTOMATICALLY ALLOCATING THE USE OF ASSETS - A method for automatically allocating use of an asset is disclosed. Such a method includes tracking proximity of a first asset relative to a second asset and determining when the first asset is proximate the second asset. The method further senses use of the second asset while the first asset is proximate the second asset. Sensing use may include sensing vibration of the second asset, temperature of the second asset, electrical current drawn by the second asset, or the like. The method automatically allocates use of the second assert to at least one of the first asset, an entity associated with the first asset, and a project associated with the first asset. A corresponding system and computer program product are also disclosed herein. | 12-17-2015 |
20150363740 | APPARATUS AND METHOD FOR AUTOMATICALLY ALLOCATING THE TIME OF INDIVIDUALS - A method for automatically allocating the time of an individual to a project is disclosed. Such a method includes associating a project with a location, such as the location of an asset, and tracking proximity of an individual to the location. A “project” may include work associated with a particular client, work order, assignment, or the like. A “location” may include a stationary or changing location. The method further determines an amount of time that the individual is deemed to be proximate the location. The method automatically allocates time of the individual to the project during the time the individual is proximate the location. In certain embodiments, the method further enables the individual to manually adjust the time that is allocated to the project during the time the individual is proximate the location. A corresponding system and computer program product are also disclosed. | 12-17-2015 |
20150363844 | APPARATUS AND METHOD FOR FACILITATING TRANSACTIONS BETWEEN A NETWORK OF BUSINESSES - A method for facilitating transactions between a network of businesses includes determining, for a given time period, a first invoice directed from a first business to a second business, and a second invoice directed from the second business to the first business. The method further includes aggregating the first and second invoices to determine a net payment needed to pay both the first invoice and the second invoice. The net payment is transferred between the first business and the second business. The method further includes updating an accounting platform for each of the first business and the second business to indicate that the first invoice and the second invoice have been paid. | 12-17-2015 |