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公开(公告)号：US20240027342A1
公开(公告)日：2024-01-25
申请号：US18375025
申请日：2023-09-29
Inventor： Joshua M. Weisberger , Brett F. Bathel
CPC classification number: G01N21/455 , G01B11/2513
Abstract: A real-time reference free background oriented schlieren system is provided. One embodiment includes a display device capable of generating an image pattern projected onto a retroreflective background. A beam splitter is used to transmit a portion of the projected image pattern towards a reference image sensor and another portion of the image pattern towards the retroreflective background and past a density object. The retroreflective background reflects the projected pattern back through the beam splitter and onto a signal imaging sensor. Collected data from the reference image sensor and the signal image sensor may be processed in real-time. The image pattern may be altered as necessary without requiring a new reference image, reducing the amount of time required to set up and adjust the system. A display device may be capable of switching between a schlieren visualization capability to a shadowgraph system allowing for the use of two different imaging techniques.
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公开(公告)号：US11873915B1
公开(公告)日：2024-01-16
申请号：US17566068
申请日：2021-12-30
Inventor： Brad M. Addona , James A. Richard , Maegan Rinehart Dawson , William Francis Sadowski
Abstract: A poppet valve apparatus has a valve body with an aperture rimmed by a first sealing surface, and a valve stem with an axially oriented cup at its tip with a spring disposed within the cup. The valve plate includes a sealing surface at its perimeter and also has a central pocket which receives a spheroid. The valve stem passes through a collar which is affixed to the valve plate to trap the spheroid beneath the spring so that the plate is pivotably coupled to the valve stem and also tolerates radial and lateral excursion to allow the valve plate to self-align and seal within the valve seat.
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公开(公告)号：US11873590B1
公开(公告)日：2024-01-16
申请号：US16999683
申请日：2020-08-21
Inventor： Tiffany Williams
CPC classification number: D04C1/12 , D06M15/55 , D10B2101/122 , D10B2505/02
Abstract: A triaxially hybrid braid reinforcement material for polymer matrix composites. The braid includes hybrid tows, which include at least one carbon fiber tow commingled with carbon nanotube yarns to introduce toughness to the hybrid tows. The hybrid tows may be arranged in any and all of the braiding directions. The braid may also include carbon fiber tows, which can be arranged in the axial direction or other braiding directions not occupied by the hybrid tows. The braid is infiltrated with resin, which is impregnated into the braid and cured, to form the toughened polymer matrix composite.
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公开(公告)号：US11859272B1
公开(公告)日：2024-01-02
申请号：US17235395
申请日：2021-04-20
Inventor： David S. Scannapieco , David L. Ellis
Abstract: In situ alloying of elemental Cu, Cr, and Nb powder using laser melting to form a Cu—Cr2Nb alloy. The elemental powders are initially mixed to form a homogeneous mixture, which mixture is then subjected to laser radiation to melt the mixture. In the melt, the Cr and Nb react to form Cr2Nb, which when cooled form precipitates that are dispersed in a nearly pure Cu matrix to thus dispersion strengthen the material. The methods can be used to additively manufacture a 3D component of Cu—Cr2Nb alloy using a selective laser melting machine.
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25.发明授权公开(公告)号：US11815074B1
公开(公告)日：2023-11-14
申请号：US16912946
申请日：2020-06-26
Inventor： Gabriel F. Benavides , Luis R. Pinero , Corey R. Rhodes , Arthur Birchenough
CPC classification number: F03H1/0075 , F03H1/0012 , F03H1/0018 , B64G1/405
Abstract: Scalable power processing units (PPUs) for Hall-effect thrusters (HETs) and terrestrial systems are disclosed. A technique for current estimation may be employed on each output of parallel isolated discharge supply modules (DSMs) to force proper current/load sharing between the DSMs. A flyback power supply may be used that performs the dual functions of a cathode keeper plasma ignitor and sustainer. The flyback power supply may be tuned for a high no-load direct current (DC) output voltage to achieve cathode keeper ignition rather than requiring a separate ignitor supply, which reduces circuit complexity. To address requirements for higher voltage DC ignition than are achievable with a flyback power supply alone, a supplemental DC ignitor may be placed in parallel with the flyback power supply of some embodiments. Such simplified PPU architectures may provide a high efficiency, low part count, scalable architecture suitable for more compact and lower cost system designs.
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Patent Agency Ranking
公开(公告)号：US11796306B2
公开(公告)日：2023-10-24
申请号：US17032341
申请日：2020-09-25
Inventor： Brett F. Bathel , Joshua M. Weisberger
IPC: G01B9/02 , G01B9/02015 , G02B27/28 , G01B9/02001 , G02B7/00 , G02B7/18 , G02B5/30
CPC classification number: G01B9/02015 , G01B9/02001 , G02B5/3083 , G02B7/003 , G02B7/1805 , G02B27/285
Abstract: An adjustable beam directing optical system for a focused laser differential interferometer (FLDI) instrument according to various aspects of the present technology may include an optical half waveplate to achieve an incident linear polarization orientation with equal components of laser intensity aligned to the vertical and horizontal axis of the optical system, and an optical prism for splitting these components of an incident laser beam into two orthogonally-polarized beams equally about an optical axis of the FLDI instrument. A series of beam realignment devices positioned downstream of the optical prism are configured to selectively direct each beam to a predetermined location.
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公开(公告)号：US11781206B2
公开(公告)日：2023-10-10
申请号：US17661054
申请日：2022-04-28
Applicant: University of Florida Research Foundation, Inc. , United States Of America As Represented By The Administrator of NASA
Inventor： Michele Viola Manuel , Charles Robert Fisher , Maria Clara Wright
IPC: C22C21/02 , C22F1/00 , C22C21/14 , B32B15/20 , C22C1/04 , C22C49/14 , C22C1/10 , C22C49/06 , B22F1/00 , B22D19/00 , B22D21/00 , C22F1/043 , C22F1/057
CPC classification number: C22F1/006 , B22D19/00 , B22D21/007 , B22F1/00 , B32B15/20 , C22C1/0416 , C22C1/1036 , C22C1/1084 , C22C21/02 , C22C21/14 , C22C49/06 , C22C49/14 , C22F1/043 , C22F1/057 , B22F2301/15 , B32B2307/54
Abstract: Disclosed herein is a composite comprising a metal alloy matrix; where the metal alloy matrix comprises aluminum in an amount greater than 50 atomic percent; a first metal and a second metal; where the first metal is different from the second metal; and where the metal alloy matrix comprises a low temperature melting phase and a high temperature melting phase; where the low temperature melting phase melts at a temperature that is lower than the high temperature melting phase; and a contracting constituent; where the contracting constituent exerts a compressive force on the metal alloy matrix at a temperature between a melting point of the low temperature melting phase and a melting point of the high temperature melting phase or below the melting points of the high and low temperature melting phases.
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公开(公告)号：US20230242704A1
公开(公告)日：2023-08-03
申请号：US17589403
申请日：2022-01-31
Inventor： Jeffrey A. Hinkley , Jin Ho Kang , Keith L. Gordon , Sheila A. Thibeault
CPC classification number: C08G59/3227 , C08G59/504
Abstract: Various embodiments may include low-creep and low-stress-relaxation polymer composites (or reduced-creep and reduced-stress-relaxation polymer composites) and methods for making low-creep and low-stress-relaxation polymer composites (or reduced-creep and reduced-stress-relaxation polymer composites). Various embodiments may include a polymeric material, comprising: a tetrafunctional epoxy in an epoxy weight amount; an amine hardener in a hardener weight amount, wherein a weight ratio of the epoxy weight amount to the hardener weight amount is 1:0.38 or greater; and an oligomer additive in an additive concentration, the oligomer additive comprising a monomer combined with 4′-hydroxyacetanilide (HAA).
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公开(公告)号：US11707772B2
公开(公告)日：2023-07-25
申请号：US16909572
申请日：2020-06-23
Inventor： Kevin Scott Edwards , Mark Alan Mitchell , Eric Townsend Fox
CPC classification number: B08B9/0328 , B60S3/00
Abstract: A high flow differential cleaning system uses a source of pressurized compressed dry gas to pressurize a holding tank. A component to be cleaned is securely loaded and oriented against a blast plate designed specifically for the desired pressure, flow, and volume. A fast-actuated valve system opens to direct high volumes of pressurized gas from a holding tank through and around the component(s) held within the cleaning chamber for the removal of remnant powder and foreign particles from interior cavities as well as exterior component surfaces.
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公开(公告)号：US20230215590A1
公开(公告)日：2023-07-06
申请号：US17569035
申请日：2022-01-05
Inventor： Donald L. Thomsen, III
Abstract: Described herein are articles composed of coatings with improved gamma radiation shielding and physical properties. In one aspect, the article is composed of a coating, where the coating includes a first layer composed of a first Z grade material, a second layer composed of a second Z grade material, and a third layer composed of a third Z grade material, wherein the atomic number of the first Z grade material and the third Z grade material is less than the atomic number of the second Z grade material. In one aspect, the substrate of the article is a textile. Methods for making the articles described herein are also provided.
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