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    Vatless additive manufacturing apparatus and method
    1.
    发明授权
    Vatless additive manufacturing apparatus and method 有权

    公开(公告)号：US11254052B2

    公开(公告)日：2022-02-22

    申请号：US15802351

    申请日：2017-11-02

    Applicant: General Electric Company

    Inventor： David Richard Barnhart ,  Mary Kathryn Thompson

    IPC: B29C64/268 ,  B29C64/141 ,  B33Y30/00 ,  B33Y10/00

    Abstract: An additive manufacturing apparatus includes: a build table, at least a portion of which is transparent, the build table defining a build surface; a material applicator operable to deposit a radio-energy-curable resin on the build surface; a stage positioned facing the build surface of the build table and configured to hold a one or more cured layers of the resin; one or more actuators operable to change the relative positions of the build table and the stage; a radiant energy apparatus positioned adjacent to the build table opposite to the stage, and operable to generate and project radiant energy on the resin through the build table in a predetermined pattern; a drive mechanism operable to move the build table so as to expose a new portion thereof for each layer; and material remover operable to remove remnants from the build surface. A method for using the apparatus is provided.

    Metering valve assembly and method of assembly thereof
    2.
    发明授权
    Metering valve assembly and method of assembly thereof 有权

    公开(公告)号：US11041445B2

    公开(公告)日：2021-06-22

    申请号：US16273300

    申请日：2019-02-12

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： John Michael Cadman ,  David Richard Barnhart

    IPC: F02C9/00 ,  F02C9/26 ,  F16K15/14 ,  F02C7/232 ,  F16K1/44 ,  F16K15/02

    Abstract: A valve assembly includes a body including an inlet port, an outlet port, and a flow passage extending therebetween. The flow passage includes a plurality of valve seats in a stepped arrangement between the inlet port and the outlet port. The valve assembly further includes a valve stem positioned within the flow passage. The valve stem includes at least one shaft and a poppet disk positioned at one end of the at least one shaft, and at least one reed petal coupled to the at least one shaft. The poppet disk is engageable with a first valve seat of the plurality of valve seats, and the at least one reed petal is engageable with a second valve seat of the plurality of valve seats.

    METERING VALVE ASSEMBLY AND METHOD OF ASSEMBLY THEREOF
    3.
    发明申请
    METERING VALVE ASSEMBLY AND METHOD OF ASSEMBLY THEREOF 审中-公开

    公开(公告)号：US20200025111A1

    公开(公告)日：2020-01-23

    申请号：US16273300

    申请日：2019-02-12

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： John Michael Cadman ,  David Richard Barnhart

    IPC: F02C9/26 ,  F16K15/14 ,  F02C7/232 ,  F16K1/44 ,  F16K15/02

    Abstract: A valve assembly includes a body including an inlet port, an outlet port, and a flow passage extending therebetween. The flow passage includes a plurality of valve seats in a stepped arrangement between the inlet port and the outlet port. The valve assembly further includes a valve stem positioned within the flow passage. The valve stem includes at least one shaft and a poppet disk positioned at one end of the at least one shaft, and at least one reed petal coupled to the at least one shaft. The poppet disk is engageable with a first valve seat of the plurality of valve seats, and the at least one reed petal is engageable with a second valve seat of the plurality of valve seats.

    Metering valve assembly and method of assembly thereof
    6.
    发明授权
    Metering valve assembly and method of assembly thereof 有权

    公开(公告)号：US10240537B2

    公开(公告)日：2019-03-26

    申请号：US15232426

    申请日：2016-08-09

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： John Michael Cadman ,  David Richard Barnhart

    IPC: F16K15/14 ,  F02C9/26 ,  F02C7/232 ,  F16K1/44 ,  F16K15/02

    Abstract: A valve assembly includes a body including an inlet port, an outlet port, and a flow passage extending therebetween. The flow passage includes a plurality of valve seats in a stepped arrangement between the inlet port and the outlet port. The valve assembly further includes a valve stem positioned within the flow passage. The valve stem includes at least one shaft and a poppet disk positioned at one end of the at least one shaft, and at least one reed petal coupled to the at least one shaft. The poppet disk is engageable with a first valve seat of the plurality of valve seats, and the at least one reed petal is engageable with a second valve seat of the plurality of valve seats.

    Vatless additive manufacturing apparatus and method
    9.
    发明授权
    Vatless additive manufacturing apparatus and method 有权

    公开(公告)号：US11833755B2

    公开(公告)日：2023-12-05

    申请号：US17560898

    申请日：2021-12-23

    Applicant: General Electric Company

    Inventor： David Richard Barnhart ,  Mary Kathryn Thompson

    IPC: B29C64/268 ,  B29C64/141 ,  B33Y30/00 ,  B33Y10/00

    CPC classification number: B29C64/268 ,  B29C64/141 ,  B33Y10/00 ,  B33Y30/00

    Abstract: An additive manufacturing apparatus includes: a build table, at least a portion of which is transparent, the build table defining a build surface; a material applicator operable to deposit a radio-energy-curable resin on the build surface; a stage positioned facing the build surface of the build table and configured to hold a one or more cured layers of the resin; one or more actuators operable to change the relative positions of the build table and the stage; a radiant energy apparatus positioned adjacent to the build table opposite to the stage, and operable to generate and project radiant energy on the resin through the build table in a predetermined pattern; a drive mechanism operable to move the build table so as to expose a new portion thereof for each layer; and material remover operable to remove remnants from the build surface. A method for using the apparatus is provided.

    Heated gas circulation system for an additive manufacturing machine
    10.
    发明授权
    Heated gas circulation system for an additive manufacturing machine 有权

    公开(公告)号：US10814388B2

    公开(公告)日：2020-10-27

    申请号：US15878569

    申请日：2018-01-24

    Applicant: General Electric Company

    Inventor： David Richard Barnhart ,  Mark Richard Shaw

    IPC: B22F3/10 ,  B33Y30/00 ,  B22F3/105

    Abstract: An additive manufacturing machine includes a heated gas circulation system for regulating the temperature of additive powder throughout an annular powder bed and parts formed therein. The additive manufacturing machine includes an annular build platform defining a plurality of perforations and a heated gas supply that provides a flow of heated air through the plurality of perforations and the powder bed. The additive manufacturing machine further includes a plurality of fairings for guiding the flow of heated gas to temperature sensitive regions to minimize temperature gradients within the powder bed which might otherwise result in distortion, thermal stresses, or cracking in the finished part.

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