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    Dynamic valve seal having retaining features
    11.
    发明授权
    Dynamic valve seal having retaining features 有权

    公开(公告)号：US10428957B2

    公开(公告)日：2019-10-01

    申请号：US15705844

    申请日：2017-09-15

    Applicant: Delavan Inc.

    Inventor： Andy W. Tibbs ,  Neal A. Thomson

    IPC: F16K15/00 ,  F16K1/34 ,  F02C7/232 ,  F23K5/14 ,  F16J15/3212 ,  F23D11/38 ,  F16K15/02 ,  F16J15/3236 ,  F16K1/42

    Abstract: A dynamic seal assembly is disclosed for use in a valve having an upstream pressure side and a downstream pressure side, the dynamic seal assembly including an annular seal member having a generally C-shaped cross-section and including opposed upstream and downstream legs defining an internal cavity with an opening facing toward the upstream pressure side of the valve, wherein the upstream leg has a radial length that is greater than a radial length of the downstream leg and includes a retaining foot that extends angularly away from the upstream leg in an upstream direction at an angle of between about 0° and 90°, and a metallic spring is disposed within the internal cavity of the seal member for providing a constant sealing force to the seal member.

    PASSIVE PURGE INJECTORS
    12.
    发明申请
    PASSIVE PURGE INJECTORS 审中-公开

    公开(公告)号：US20180238548A1

    公开(公告)日：2018-08-23

    申请号：US15439014

    申请日：2017-02-22

    Applicant: Delavan Inc

    Inventor： Philip E. O. Buelow ,  Andy W. Tibbs ,  Steven L. Smith ,  David H. Bretz ,  Travis R. Burke

    IPC: F23R3/28

    CPC classification number: F23R3/283 ,  F23D11/24 ,  F23D2204/10 ,  F23R3/14 ,  F23R3/28 ,  F23R3/36 ,  F23R2900/00004

    Abstract: A method of injecting fuel in a gas turbine engine includes injecting gaseous fuel from a gaseous fuel circuit of an injector in a first mode, wherein flow of gaseous fuel from the gaseous fuel circuit constricts air flow from an air circuit. The method includes injecting liquid fuel from a liquid fuel circuit in a second mode, idling flow in the gaseous fuel circuit and flowing air through the air circuit for passive purge to prevent liquid fuel from migrating into the gaseous fuel circuit. The method includes injecting a gaseous fuel that lies within a range of different Wobbe Index values, wherein regardless of where the gaseous fuel falls in the range, it does not prevent operation in the first and second modes as described above.

    SWIRLING PINTLE INJECTORS
    14.
    发明申请
    SWIRLING PINTLE INJECTORS 审中-公开

    公开(公告)号：US20200290061A1

    公开(公告)日：2020-09-17

    申请号：US16891759

    申请日：2020-06-03

    Applicant: Delavan Inc.

    Inventor： Douglas L. Ummel ,  John Earl Short ,  Andy W. Tibbs

    IPC: B05B1/30 ,  F02M51/06 ,  F01N3/36 ,  F02M61/16

    Abstract: An injector includes a housing including a fluid passage extending from an inlet of the housing to an outlet end of the housing. An actuator is mounted within the housing. A pintle extends along a longitudinal axis from an actuator end to a pintle head. The actuator end of the pintle is operatively connected to the actuator for actuation along the longitudinal axis. A tip member is mounted to the outlet end of the housing. The tip member includes an outlet orifice and a pintle seat. In a seated position of the pintle, the pintle head blocks flow to the outlet orifice. In an open position of the pintle, the pintle head allows flow. The pintle head includes a swirl passage therein, wherein the swirl passage is angled tangential relative to the longitudinal axis to induce swirl on flow passing between the pintle head and the pintle seat.

    DISCRETE JET ORIFICES
    15.
    发明申请
    DISCRETE JET ORIFICES 审中-公开

    公开(公告)号：US20200072129A1

    公开(公告)日：2020-03-05

    申请号：US16676855

    申请日：2019-11-07

    Applicant: Delavan Inc.

    Inventor： Steven J. Myers ,  Andy W. Tibbs ,  Joseph Samo ,  Jason A. Ryon

    IPC: F02C7/22 ,  B05B1/02 ,  B05B1/14 ,  F23R3/28 ,  F23D11/38

    Abstract: A nozzle tip includes a nozzle tip body defining an upstream surface and an opposed downstream surface. An outlet orifice is defined through the nozzle tip body for fluid communication from a space upstream of the upstream surface to a space downstream of the downstream surface. The outlet orifice includes a cylindrical outlet portion defining an outlet axis, and a tapered inlet portion upstream of the outlet portion. The tapered inlet portion converges down towards the outlet axis in a direction from the upstream surface toward the downstream surface.

    FUEL INJECTORS INCLUDING GAS FUEL INJECTION
    17.
    发明申请
    FUEL INJECTORS INCLUDING GAS FUEL INJECTION 审中-公开

    公开(公告)号：US20190257520A1

    公开(公告)日：2019-08-22

    申请号：US15902800

    申请日：2018-02-22

    Applicant: Delavan Inc.

    Inventor： Andy W. Tibbs ,  Gregory A. Zink ,  Thomas J. Ocken ,  Lev Alexander Prociw

    IPC: F23R3/14 ,  F23R3/28 ,  F23R3/26

    Abstract: In accordance with at least one aspect of this disclosure, a fuel injector can include an annular body defining a gas fuel inlet therein, and a structure extending radially outward from the annular body and configured to extend into an air circuit. The structure can include a gas channel defined within the structure at least partially along a radial length of the structure. The gas channel is in fluid communication with the gas fuel inlet where the structure meets the annular body. The structure also includes a slot opening defined at least partially along a radial length of the structure and configured to fluidically connect the gas channel and the air circuit to all gas fuel to effuse into the air circuit.

    Recoater cleaning system
    20.
    发明授权
    Recoater cleaning system 有权

    公开(公告)号：US10576510B2

    公开(公告)日：2020-03-03

    申请号：US15606490

    申请日：2017-05-26

    Applicant: Delavan Inc

    Inventor： Matthew Donovan ,  Danielle Douskey ,  Andy W. Tibbs

    IPC: B08B5/02 ,  B33Y40/00 ,  B29K105/00

    Abstract: A system for cleaning an additive manufacturing machine recoater includes a position module for sensing and/or determining a position of a recoater of the additive manufacturing machine and a gas manifold disposed in the additive manufacturing machine and configured to spray a pressurized gas on the recoater when the recoater is in at least one cleaning position. The system includes a valve configured to allow the pressurized gas to flow from a gas source to the gas manifold, and a valve control module configured to control the valve as a function of the position sensed and/or determined by the position module.

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