Patent application number | Description | Published |
20090243955 | Antenna for compact satellite terminal - An antenna for a compact satellite terminal. Antenna is a rigid parabolic structure of metal matrix composite capable of disassembly into segments affording a high degree of portability such as for man-packable satellite terminals and the like. A shallow feed horn assembly is joined to an orthomode transducer by a common hub, the hub also serving as the attachment point for a plurality of antenna segments, where a quick release means joins the segments to the hub. The feed horn, hub, orthomode transducer and antenna segments are designed for extremely compact stowability in a variety of applications. | 10-01-2009 |
20110221101 | Resin-based molding of electrically conductive structures - A method for resin-based molding of electrical structures which possess desired properties of electrical conductivity, radio frequency (RF) energy reflectivity, and electromagnetic interference (EMI) shielding, while still retaining the basic physical and structural properties of the base (plastic) material. | 09-15-2011 |
20130063325 | Dynamically reconfigurable microstrip antenna - A dynamically-reconfigurable antenna having a microstrip patchwork radiating surface wherein individual radiating patches can be connected to and disconnected from each other via photoconductive interconnections between the radiating patches. Commands from software alternately turn light from light emitting sources on or off, the light or lack thereof being channeled from an underside layer of the antenna so as to enable or disable the photoconductive interconnections. The resultant connection or disconnection of the radiating patches will vary the antenna's frequency, bandwidth, and beam pointing. | 03-14-2013 |
20130249751 | Dynamically reconfigurable feed network for multi-element planar array antenna - A dynamically-reconfigurable feed network antenna having a microstrip patchwork radiating surface wherein individual radiating patches and elements of a stripline feed structure can be connected to and disconnected from each other via photoconductive interconnections. Commands from software alternately turn light from light emitting sources on or off, the light or lack thereof being channeled from an underside layer of the antenna so as to enable or disable the photoconductive interconnections. The resultant connection or disconnection of the radiating patches to each other and to the stripline feed structure will vary the antenna's frequency, bandwidth, and beam pointing. | 09-26-2013 |
20130309396 | Thermoplastic/Fiber Composite-Based Electrically Conductive Structures - A low-cost method for thermoplastic injection molding of thermoplastic/fiber composite structures which are imparted with the desired properties of electrical conductivity, radio frequency (RF) energy reflectivity, and electromagnetic interference (EMI) shielding, while also possessing the basic physical and structural properties of the same part produced by traditional resin/fiber composite means such as expoxy/carbon fiber lay-up or infusion. | 11-21-2013 |
Patent application number | Description | Published |
20110126713 | AIR FILTRATION DEVICE - Air filtering devices are disclosed that contain a first filter cartridge having a cartridge inlet and a cartridge outlet and a curved filter bed having a concave surface disposed such that air to be filtered passes through the inlet, the curved filter bed, and the outlet. The air filtering devices also contain a blower assembly having a blower inlet in fluid communication with the cartridge outlet and a blower outlet, the blower assembly includes a motor proximate to the concave surface of the curved filter bed. The motor has a rotational axis such that the rotational axis is adjacent to the center of curvature of the curved filter bed. The air filtering device may be used in powered air purifying respirators. | 06-02-2011 |
20110283505 | METHOD OF MAKING FILTER CARTRIDGE HAVING ROLL-BASED HOUSING SIDEWALL - A method of making a filter cartridge, which method includes: (a) providing first and second filter media layers that each contain active particulate that is bonded together and that each comprise a perimeter; (b) stacking the filter media layers in a spaced apart relationship; and (c) securing a roll based housing sidewall to at least a portion of the perimeter of each filter media layer. The resulting filter cartridge is light in weight but has increased volume that provides an improved service life. The cartridge has a very good service life to weight ratio. | 11-24-2011 |
20110284006 | FILTER CARTRIDGE HAVING CENTRAL PLENUM AND HOUSING SIDEWALL - A filter cartridge | 11-24-2011 |
20110311400 | REFILLABLE FILTER SYSTEM - A radial flow filtration system includes a housing and one or more generally cylindrical filter cartridges including a filter cartridge shell and a filter section. The filter cartridge is removable with respect to the housing and the filter section in removable with respect to the filter cartridge shell. | 12-22-2011 |
20130125896 | SIDE PLUG-IN FILTER CARTRIDGE - A respirator | 05-23-2013 |
20130139818 | SPLIT FLOW FILTERING DEVICE - A filtering device 10, 10′ that has a fluid inlet 12, a plenum 14, first and second filter layers 16 and 18, first and second fluid outlets 20 and 22, and a housing 24. The plenum 14 receives air that passes through the fluid inlet 12, and the first and second filter layers 16 and 18 are located on opposing sides of the plenum 14. The first and second fluid outlets 20 and 22 are located downstream to the first and second filter layers 16 and 18, respectively, on a side of each filter layer 16, 18 opposite the plenum 14. The housing 12 supports the first and second filter layers 16, 18 on opposing sides of the plenum 14. Very good distribution of fluid through the device 10 may be achieved because the plenum 14 and the filtering layers 16, 18 maintain their original relative positioning throughout use. Complex shapes can be produced, which enable the filtering device to accommodate devices of various configurations. Thicker filter media beds may be used on each side of the plenum to improve filtration performance and service life. | 06-06-2013 |
Patent application number | Description | Published |
20090183950 | LUBRICATION SYSTEM AND METHOD, AND VORTEX FLOW SEPARATOR FOR USE THEREWITH - An aircraft engine lubrication system has a vortex separator, a first pump line having a first pump, an inlet connected to a separated lubricant area at the outlet end of the separator, and an outlet connectable to the engine. A scavenge line is provided for returning lubricant from the engine to an inlet end of the separator. A lubricant tank is connected in fluid flow communication with the separator by a connection line. A second pump line having a second pump has an inlet connected to the lubricant tank and an outlet connected to the separator for pumping lubricant from the tank to the inlet end of the separator. | 07-23-2009 |
20100247297 | ACTIVE TIP CLEARANCE CONTROL ARRANGEMENT FOR GAS TURBINE ENGINE - An active tip clearance control (ATCC) apparatus of an aircraft gas turbine engine is situated within a pressurized core case of the engine. First and second portions of bypass air flow passing through the respective compressed core compartment and the ATCC apparatus, are isolated from one another in order to improve both the ATCC performance and bypass air duct performance. | 09-30-2010 |
20100275572 | OIL LINE INSULATION SYSTEM FOR MID TURBINE FRAME - A gas turbine engine having a mid turbine frame comprising an annular outer case providing a portion of an engine casing; an interturbine duct (ITD) disposed within the outer case, the ITD including outer and inner rings radially spaced apart one from another and being interconnected by a plurality of radially extending and circumferentially spaced hollow strut fairings, the inner and outer rings co-operating to provide a portion of a hot gas path through the engine; a tube for delivering or discharging a lubricant fluid to or from a bearing housing, the tube extending radially through one of the hollow struts; and an insulation structure radially extending through one said hollow strut fairing, the insulation structure surrounding the tube and being spaced apart from the tube and from a hot internal surface of the one hollow strut fairing for shielding the tube from heat radiated from the hot internal surface of the one hollow strut fairing and for preventing the lubricant fluid from contacting the hot internal surface of said one hollow strut fairing when lubricant fluid leakage occurs. | 11-04-2010 |
20110079019 | COOLING AIR SYSTEM FOR MID TURBINE FRAME - A mid turbine frame is disposed between high and low pressure turbine assemblies. A cooling air system defined in the mid turbine frame of a gas turbine engine includes internal cavities for containing pressurized cooling air to cool the inter-turbine duct and the hollow struts, and discharges the used cooling air to further cool respective high and low pressure turbine assemblies. | 04-07-2011 |
20110079020 | AIR METERING DEVICE FOR GAS TURBINE ENGINE - An air metering apparatus for a secondary air system of gas turbine engine includes a metering gap defined between surfaces comprised of one or more metals having one of similar coefficients of thermal expansion or similar thermal expansions at an operating temperature. Provided is an air metering gap which undergoes thermal growth in a way which provides a suitable air metering gap during engine running conditions. | 04-07-2011 |
20110314830 | OIL SUPPLY SYSTEM WITH MAIN PUMP DEAERATION - An oil supply system for a gas turbine engine with a centrifugal air/oil separator in fluid communication with the scavenge system to receive the used oil mixture and extract oil and air therefrom, a supply pump in serial connection with the main oil outlet of the separator and in fluid communication with the bearing cavities to deliver the oil thereto, an oil tank in fluid communication with the overflow oil outlet of the separator, and at least one make-up pump having an inlet in fluid communication with the tank and having an outlet in fluid communication with the scavenge system. | 12-29-2011 |
20130078080 | AIR SYSTEM ARCHITECTURE FOR A MID-TURBINE FRAME MODULE - A mid-turbine frame is disposed between high and low pressure turbine assemblies. A secondary air system is defined in the mid-turbine frame (MTF) to provide cooling to the turbine section of the engine. The secondary air system may be used to cool and pressurize seals to assist with oil retention in bearing cavities. The temperature gain of the secondary air may be reduced by flowing the secondary air through one or more external lines and then generally radially inwardly through air passages defined in the MTF. | 03-28-2013 |
20140144121 | GAS TURBINE ENGINE WITH BEARING OIL LEAK RECUPERATION SYSTEM - A gas turbine engine having an annular gas path between a radially outer wall and a radially inner wall, leading successively across at least one compressor stage, a combustor section, and at least one turbine stage, a hollow shaft having an internal surface with an oil trap formed therein, and at least one oil recuperation orifice extending out across the hollow shaft from the oil trap; and a bearing cavity formed within the radially inner wall, having at least one bearing therein rotatably supporting the hollow shaft of the gas turbine engine, at least two bearing seals enclosing the at least one bearing in the bearing cavity and separating the bearing cavity from associated buffer air entry points, at least a first one of said buffer air entry points being exposed to the at least one oil recuperation orifice outside the hollow shaft. | 05-29-2014 |
20140144154 | GAS TURBINE ENGINE WITH BEARING BUFFER AIR FLOW AND METHOD - The gas turbine engine has a bleed air aperture formed in the radially outer wall upstream from the combustor and a bearing cavity formed within the radially inner wall, at least two bearing seals enclosing at least one bearing in the bearing cavity and separating the bearing cavity from associated buffer air entry points, an oil supply system including oil paths leading to each of the bearings; a buffer air supply system including buffer air paths leading to each of the entry points. | 05-29-2014 |