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591 records (took 0.031 seconds)

    Bi-stable pin actuator
    91.
    发明授权
    Bi-stable pin actuator 有权

    公开(公告)号：US10297376B2

    公开(公告)日：2019-05-21

    申请号：US15714119

    申请日：2017-09-25

    Applicant: The United States of America as represented by the Administrator of NASA

    Inventor： Joseph C. Church

    IPC: H01F7/00 ,  H01F7/16

    Abstract: A bi-stable pin actuator includes a soft magnetic core and having a first central portion and a second central portion spaced apart from the first central portion. The first central portion has a first passage extending there-through and the second portion has a second passage extending there-through which is coaxial with the first passage. A first coil is wound about the first central portion and a second coil is wound about the second central portion. A pair of permanent magnets are located in the space between the first central portion and second central portion and attached to the core. An armature is movably positioned between and spaced apart from the permanent magnets. A pin is attached to the armature and extends into the first passage and second passages such that movement of the armature results in movement of the pin within the first passage and second passage. The armature moves between a first position wherein the armature is adjacent to the first central portion of the core and a second position wherein the armature is adjacent to the second central portion of the core. The armature is in one stable state when in the first position and in another of the stable state when in the second position. The magnets generate magnetic flux having a magnetic flux density sufficient to hold the armature in either of the stable states when neither of the coils is energized. When the armature is in the first stable state, only a first end of the pin protrudes from the core. When the armature is in the second stable state, only an opposite second end of the pin protrudes from the core. Energizing at least one of the coils generates a magnetic flux in one section of the actuator that opposes the magnetic flux holding the armature in a current stable state and supplements the magnetic flux in another section of the actuator so as to shift the armature into another stable state.

    Method for forming component-level radiation shield optimized for environmental radiation characteristics and design critera
    92.
    发明授权
    Method for forming component-level radiation shield optimized for environmental radiation characteristics and design critera 有权

    公开(公告)号：US10255382B1

    公开(公告)日：2019-04-09

    申请号：US15685556

    申请日：2017-08-24

    Applicant: The United States of America as represented by the Administrator of NASA

    Inventor： Jean-Marie Lauenstein ,  Steven J. Kenyon ,  Raymond L. Ladbury ,  Thomas Jordan

    IPC: G06F17/50 ,  H05K9/00 ,  B29C64/10

    Abstract: A method for forming an optimized radiation shield design for a component including providing a computer system programmed to generate data files that define a component radiation shield having an optimized design based on pre-stored data defining particular radiation characteristics and user-provided data defining radiation shield design criteria. Radiation shield design criteria are inputted into the computer system which processes the inputted radiation shield design criteria and the pre-stored data defining particular radiation characteristics in order to generate data files defining an optimized design for a component radiation shield. The generated data files defining the optimized design for a component radiation shield are provided to a metallic three-dimensional printing system. The three-dimensional printing system is then activated to form a component radiation shield using a predetermined metal powder and the generated data files that define the optimized component radiation shield design. The formed component radiation shield is then attached to the component or the circuit board.

    DEPLOYABLE MULTI-SECTION BOOM
    93.
    发明申请
    DEPLOYABLE MULTI-SECTION BOOM 审中-公开

    公开(公告)号：US20190092496A1

    公开(公告)日：2019-03-28

    申请号：US15713747

    申请日：2017-09-25

    Applicant: United States of America as represented by the Administrator of NASA

    Inventor： LUIS H. SANTOS SOTO

    IPC: B64G1/22

    Abstract: A deployable multi-section boom comprising a first hinge assembly including a base section adapted to be attached to a structure, a movable section that is pivotably attached to the base section and a first boom attached to the movable section. The first hinge assembly is configured to allow the first boom to pivot in a first direction to a first predetermined maximum angle with respect to the base section. A first constant torque assembly constantly urges the first boom to pivot in the first direction and includes a component attached to the base section of the first hinge assembly. The multi-section boom includes a second hinge assembly that includes a first section attached to the first boom and a second section that is pivotably attached to the first section. A second boom is attached to the second section of the second hinge assembly wherein the second hinge assembly allows the second boom to pivot in a second direction to a second predetermined maximum angle with respect to the first boom. A second constant torque assembly constantly urges the second boom to pivot in the second direction and includes a component that is attached to the first section of the second hinge assembly. The first constant torque assembly and second constant torque assembly cooperate to configure the multi-section boom in a fully deployed state wherein the constant torque applied to the first boom causes the entire multi-section boom to pivot in the first direction while the constant torque applied to the second boom causes the second boom to simultaneously pivot in the second direction with respect to the first boom while the entire multi-section boom continues to pivot in the first direction. The multi-section boom is fully deployed when the first boom pivots to the first predetermined maximum angle and the second boom pivots to the second predetermined angle.

    Holey Graphene Mesh and Solvent-Free Manufacturing and Composites Thereof
    95.
    发明申请
    Holey Graphene Mesh and Solvent-Free Manufacturing and Composites Thereof 审中-公开

    公开(公告)号：US20190022974A1

    公开(公告)日：2019-01-24

    申请号：US16040627

    申请日：2018-07-20

    Applicant: United States of America, as represented by the Administrator of NASA

    Inventor： Yi Lin ,  John W. Connell ,  John W. Hopkins ,  Brandon Moitoso

    IPC: B32B9/00 ,  C01B32/194

    Abstract: Systems, methods, and devices of the various embodiments provide for the creation of holey graphene meshes (HGMs) and composite articles including HGMs. Various embodiments provide solvent-free methods for creating arrays of holes on holey graphene-based articles formed from dry compression (such as films, discs, pellets), thereby resulting in a HGM. In further embodiments, a HGM can used as part of a composite, such as by: 1) embedding a HGM into another matrix material such as carbon, polymer, metals, metal oxides, etc; and/or (2) the HGM serving as a matrix by filling the holes of the HGM or functionalizing the HGM body with another one or more materials. In various embodiments, HGM can also be made as a composite itself by creating holes on dry-compressed articles pre-embedded with one or more other materials.

    Wireless Temperature Sensor Having No Electrical Connections
    98.
    发明申请
    Wireless Temperature Sensor Having No Electrical Connections 审中-公开

    公开(公告)号：US20180348066A1

    公开(公告)日：2018-12-06

    申请号：US16042444

    申请日：2018-07-23

    Applicant: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA

    Inventor： Stanley E. Woodard ,  CHUANTONG WANG ,  BRYANT D. TAYLOR

    IPC: G01K7/38 ,  G01K7/00

    CPC classification number: G01K7/38 ,  G01K7/00

    Abstract: A wireless temperature sensor includes an electrical conductor and a material spaced apart from the conductor and located within one or more of the responding electric field and responding magnetic field of the conductor. The conductor is electrically unconnected and is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the conductor resonates to generate harmonic electric and magnetic field responses, each of which has a frequency associated therewith. The material is selected such that it experiences changes in one of dielectric properties and magnetic permeability properties in the presence of a temperature change. Shifts from the sensor's baseline frequency response indicate that the material has experienced a temperature change.

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