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A preloading axle clamp for a wheel bearing includes an axle adapted to receive a wheel bearing and a connecting fork. A bushing is positioned about a first end of the axle. A fastener having a first flange is coupled to the first end of the axle, wherein a portion of the fastener is inserted into the first end to retain the connecting fork on the axle. A nut is threadedly coupled to the bushing, wherein rotation of the nut on the bushing causes a preloading force on the wheel bearing.


Patent
North Technologies | Date: 2017-01-09

An aircraft includes a fuselage including a plurality of frame members disposed at predetermined intervals in a longitudinal direction of the fuselage and a plurality of stringers extending substantially linearly in the longitudinal direction. The fuselage defines an aircraft interior. A compartment is located in the interior of the fuselage. The compartment defines an interior area. A first window assembly is mounted to an upper portion of the fuselage for introducing daylight into the interior area. The first window assembly is flanked by adjacent frame members of the plurality of frame members and adjacent stringers of the plurality of stringers. The first window assembly includes a window pane, an inner cover and a retainer. The inner cover introduces daylight from the window pane into the interior area. The retainer secures the window pane and the inner cover to the fuselage.


Patent
North Technologies | Date: 2016-10-26

A compressor assembly for a pulsejet engine. The pulsejet engine including a burner positioned within a combustion chamber of the pulsejet engine. The compressor assembly includes a compressor coupled in fluid communication with the combustion chamber. The compressor is adapted to intake a first volume of air and to release a volume of compressed air. The burner is configured to receive the volume of compressed air and release a volume of a burned compressed air and fuel mixture. An active valve is operatively coupled between the compressor and the combustion chamber. The active valve is adapted to control entry of the volume of compressed air into a first end of the burner. A standing wave is formed inside the compressor to compress the first volume of air during operation of the pulsejet engine.


A method of encapsulating PbS quantum dots is provided that includes depositing, using atomic layer deposition (ALD), a first layer of TiO_(2 )on a substrate, depositing, using ALD, a first layer of PbS quantum dots on the first layer of TiO_(2), and depositing, using ALD, an encapsulating layer of the TiO_(2 )on the first layer of TiO_(2 )and the first layer of PbS quantum dots, where the first layer of PbS quantum dots are encapsulated and separated by the first layer of TiO_(2 )and the encapsulating layer of TiO_(2).


Patent
North Technologies | Date: 2014-03-12

A process for treating feedwater with a microfiltration or ultrafiltration membrane unit and a downstream reverse osmosis unit. An aluminum salt coagulant is added to the feedwater upstream of a membrane separation unit. The aluminum salt coagulant is mixed upstream of the membrane separation unit. A sufficient amount of the aluminum salt coagulant is mixed with the feedwater for a sufficient residence time to control the concentration of the aluminum in the permeate emitted by the membrane separation unit.


A method of recovering oil from an oil-bearing formation including recovering an oil-water mixture from the oil-bearing formation and separating produced water from the oil-water mixture. The produced water includes phosphonate anti-scalant compounds. An oxidant is mixed with the produced water to deactivate the phosphonate anti-scalant compounds, thereby permitting dissolved solids in the produced water to precipitate. After deactivating the phosphonate anti-scalant compounds, the produced water is directed into a ceramic membrane which filters the produced water, producing a permeate stream and a retentate stream having suspended solids and precipitants therein.


Patent
North Technologies | Date: 2014-05-12

An aircraft includes a fuselage including a plurality of frame members disposed at predetermined intervals in a longitudinal direction of the fuselage and a plurality of stringers extending substantially linearly in the longitudinal direction. The fuselage defines an aircraft interior. A compartment is located in the interior of the fuselage. The compartment defines an interior area. A first one window assembly is mounted to an upper portion of the fuselage for introducing daylight into the interior area. The first window assembly is flanked by adjacent frame members of the plurality of frame members and adjacent stringers of the plurality of stringers. The first window assembly includes a window pane, an inner cover and a retainer. The inner cover introduces daylight from the window pane into the interior area. The retainer secures the window pane and the inner cover to the fuselage.


A method of recovering oil from an oil well includes recovering an oil-water mixture from the oil well and separating produced water from the oil-water mixture. Thereafter, the produced water is directed through a ceramic membrane that removes free oil and emulsified oil from the produced water. The method or process further includes cleaning the ceramic membrane in online and offline modes. In the offline mode, cleaning is achieved by periodically backflushing the ceramic membrane with an aqueous media having a pH of 13 or greater and a temperature of 60 C. or greater. Further, the ceramic membrane is cleaned in the offline mode by applying the following operations. In one or more clean-in-place operations, an aqueous alkaline media at a pH of 13 or higher and a temperature of 60 C. or higher is directed through the ceramic membrane. In one or more clean-in-place operations, the ceramic membrane is also cleaned with an aqueous acidic media that contains dissolved citric acid. Finally, in one or more clean-in-place operations, a liquid hydrocarbon is directed through the ceramic membrane.


A process for recovering oil is provided. The process entails recovering an oil-water mixture from an oil-bearing formation. Next, the process entails separating oil from the oil-water mixture and producing produced water having hardness and other scale-forming compounds, suspended solids, free oil and emulsified oil. A pre-treatment process is undertaken to remove hardness and other scale-forming compounds. This entails precipitating hardness and other scale-forming compounds. After the precipitation of hardness and other scale-forming compounds, the produced water is directed to a membrane separation unit for filtering the produced water and producing a retentate having suspended solids, hardness and other scale-forming compounds, free oil and emulsified oil. The membrane separation unit also produces a permeate stream substantially free of hardness and other scale-forming compounds, suspended solids, free oil and emulsified oil. Thereafter, the permeate stream is chemically treated to enhance the recovery of oil in the oil-bearing formation. After treating the permeate stream from the membrane separation unit, the treated permeate is injected into the oil-bearing formation.


Patent
North Technologies | Date: 2015-10-14

A shut-off valve for a hydraulic system for an aircraft, which system includes a brake operation device, a pressure supply, a reservoir, the shut-off valve, and a wheel brake. The shut-off valve (20) is in fluid communication with and is disposed between the pressure supply and the brake valve. The shut-off valve includes a poppet (158), a first valve seat (182) and a second valve seat (190) . Movement of the poppet is controlled by operation of the brake operation device. The poppet is movable between a first position where the poppet acts against the first valve seat and a second position where the poppet acts against the second valve seat. In the first position, fluid flow is blocked between the pressure supply and the brake valve through the shut-off valve. In the second position, fluid flow is allowed between the pressure supply and the brake valve through the shut-off valve. The wheel brake is in fluid communication with and downstream from the shut-off valve.

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