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1. 发明申请

US20200378687A1 Multi-Phase Thermal Control Apparatus, Evaporators and Methods of Manufacture Thereof 审中-公开
公开(公告)号：US20200378687A1
公开(公告)日：2020-12-03
申请号：US16995348
申请日：2020-08-17
申请人： California Institute of Technology
发明人： Scott N. Roberts , Arthur J. Mastropietro , Benjamin I. Furst , Eric T. Sunada , Jordan Mizerak , Hiroki Nagai , Stefano Cappucci
IPC分类号： F28D15/02 , F28D15/04 , H01L23/427
摘要： Multi-phase thermal control systems, evaporators, variable porous wick elements, heat transfer structures, and methods for their production are provided. Two-phase evaporators for use in such multi-phase thermal control systems are also provided. Two-phase evaporators incorporate a vapor plate body having there three major layers: a vapor channel network, a wick, and a liquid channel. The vapor channel network comprises a plurality of extrusions (e.g., vapor pillars) and associated channels (e.g., vapor channels) configured to allow a vapor to flow therethrough. The wick comprises a porous body configured to be disposed between the vapor channel network of and the liquid flow reservoir.

2. 发明授权

US11155907B2 Systems and methods for shaping sheet materials that include metallic glass-based materials 有权
公开(公告)号：US11155907B2
公开(公告)日：2021-10-26
申请号：US15856543
申请日：2017-12-28
申请人： California Institute of Technology
发明人： Douglas C. Hofmann , Scott N. Roberts
IPC分类号： C22C45/10
摘要： Systems and methods in accordance with embodiments of the invention advantageously shape sheet materials that include metallic glass-based materials. In one embodiment, a method of shaping a sheet of material including a metallic glass-based material includes: heating a metallic glass-based material within a first region within a sheet of material to a temperature greater than the glass transition temperature of the metallic glass-based material; where the sheet of material has a thickness of between 0.1 mm and 10 mm; where at least some portion of the sheet of material does not include metallic glass-based material that is heated above its respective glass transition temperature when the metallic glass-based material within the first region is heated above its respective glass transition temperature; and deforming the metallic glass-based material within the first region while the temperature of the metallic glass-based material within the first region is greater than its respective glass transition temperature.

3. 发明申请

US20180119259A1 SYSTEMS AND METHODS FOR SHAPING SHEET MATERIALS THAT INCLUDE METALLIC GLASS-BASED MATERIALS 审中-公开
公开(公告)号：US20180119259A1
公开(公告)日：2018-05-03
申请号：US15856543
申请日：2017-12-28
申请人： California Institute of Technology
发明人： Douglas C. Hofmann , Scott N. Roberts
IPC分类号： C22C45/10
CPC分类号： C22C45/10 , Y10T428/12479
摘要： Systems and methods in accordance with embodiments of the invention advantageously shape sheet materials that include metallic glass-based materials. In one embodiment, a method of shaping a sheet of material including a metallic glass-based material includes: heating a metallic glass-based material within a first region within a sheet of material to a temperature greater than the glass transition temperature of the metallic glass-based material; where the sheet of material has a thickness of between 0.1 mm and 10 mm; where at least some portion of the sheet of material does not include metallic glass-based material that is heated above its respective glass transition temperature when the metallic glass-based material within the first region is heated above its respective glass transition temperature; and deforming the metallic glass-based material within the first region while the temperature of the metallic glass-based material within the first region is greater than its respective glass transition temperature.

4. 发明授权

US09610650B2 Systems and methods for fabricating structures including metallic glass-based materials using ultrasonic welding 有权
公开(公告)号：US09610650B2
公开(公告)日：2017-04-04
申请号：US14259608
申请日：2014-04-23
申请人： California Institute of Technology
发明人： Douglas C. Hofmann , Scott N. Roberts
IPC分类号： B23K20/00 , B23K20/10 , B23K20/22
CPC分类号： B23K20/22 , B23K20/10 , B23K20/103
摘要： Systems and methods in accordance with embodiments of the invention fabricate objects including metallic glass-based materials using ultrasonic welding. In one embodiment, a method of fabricating an object that includes a metallic glass-based material includes: ultrasonically welding at least one ribbon to a surface; where at least one ribbon that is ultrasonically welded to a surface has a thickness of less than approximately 150 μm; and where at least one ribbon that is ultrasonically welded to a surface includes a metallic glass-based material.

5. 发明申请

US20130319062A1 Electromagnetic Forming of Metallic Glasses Using a Capacitive Discharge and Magnetic Field 有权
标题翻译：使用电容放电和磁场的金属玻璃的电磁成形
公开(公告)号：US20130319062A1
公开(公告)日：2013-12-05
申请号：US13960558
申请日：2013-08-06
申请人： California Institute of Technology
发明人： William L. Johnson , George Kaltenboeck , Marios D. Demetriou , Scott N. Roberts , Konrad Samwer
IPC分类号： B21J5/04
CPC分类号： B21J5/04 , B21D26/14 , B23K35/3033 , C21D1/04 , C21D10/00 , C21D2201/03 , C22C1/002 , C22C45/00 , C22F3/02
摘要： An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool in combination with an electromagnetic force generated by the interaction of the applied current with a transverse magnetic field. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous metal and the equilibrium melting point of the alloy in a time scale of several milliseconds or less, at which point the interaction between the electric field and the magnetic field generates a force capable of shaping the heated sample into a high quality amorphous bulk article via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time scale of less than one second.
摘要翻译：使用快速电容器放电成形（RCDF）工具将金属玻璃均匀地加热，流变软化和热塑性地形成网状的装置和方法与由施加的电流与横向磁场的相互作用产生的电磁力组合。 RCDF方法利用存储在电容器中的电能的放电，均匀且快速地将金属玻璃合金的样品或电荷加热到非晶态金属的玻璃化转变温度与合金的平衡熔点之间的预定“工艺温度” 在几毫秒或更短的时间尺度内，电场和磁场之间的相互作用产生能够通过任何数量的技术将加热的样品成形为高品质无定形块状物品的力，包括例如注射成型，动态锻造，冲压锻造和小于1秒的时间尺寸的吹塑。

6. 发明申请

US20200278017A1 Rounded Strain Wave Gear Flexspline Utilizing Bulk Metallic Glass-Based Materials and Methods of Manufacture Thereof 审中-公开
公开(公告)号：US20200278017A1
公开(公告)日：2020-09-03
申请号：US16802267
申请日：2020-02-26
申请人： California Institute of Technology
发明人： Douglas C. Hofmann , Robert P. Dillon , Scott N. Roberts
IPC分类号： F16H49/00
摘要： Harmonic drives are used widely in robotics as a method for achieving high gear reductions and for driving force transmissions. The harmonic drive is made a three components: a wave generator, a flexspline, and a circular spline. Embodiments described flexsplines for a metal strain wave gearing. The cup of the flexspline is free from sharp edges and with a rounded bottom with a curvature maximized based on the geometry of the flexspline. Compared to a steel flexspline, implementations of flexsplines will have the same outer diameter, the same number of teeth and profile, the same input shaft/base, the same wall thickness near the teeth, but comprise a rounded bottom where the input shaft/base transitions to the straight wall of the flexspline, providing improved performance of BMG flexsplines by reducing low cycle fatigue failures due to stress concentrations.

7. 发明申请

US20180031330A1 Multi-Phase Thermal Control Apparatus, Evaporators and Methods of Manufacture Thereof 审中-公开
公开(公告)号：US20180031330A1
公开(公告)日：2018-02-01
申请号：US15666217
申请日：2017-08-01
申请人： California Institute of Technology
发明人： Scott N. Roberts , Arthur J. Mastropietro , Benjamin I. Furst , Eric T. Sunada
IPC分类号： F28D15/02 , F28D15/04
摘要： Multi-phase thermal control systems, evaporators, variable porous wick elements, heat transfer structures, and methods for their production are provided. Two-phase evaporators for use in such multi-phase thermal control systems are also provided. Two-phase evaporators incorporate a vapor plate body having there three major layers: a vapor channel network, a wick, and a liquid channel. The vapor channel network comprises a plurality of extrusions (e.g., vapor pillars) and associated channels (e.g., vapor channels) configured to allow a vapor to flow therethrough. The wick comprises a porous body configured to be disposed between the vapor channel network of and the liquid flow reservoir.

8. 发明申请

US20170137955A1 Method for Embedding Inserts, Fasteners and Features into Metal Core Truss Panels 审中-公开
公开(公告)号：US20170137955A1
公开(公告)日：2017-05-18
申请号：US15346592
申请日：2016-11-08
申请人： California Institute of Technology
发明人： Douglas C. Hofmann , Scott N. Roberts
IPC分类号： C25D5/56 , C25D7/00 , C23C14/20 , C23C14/58 , B29C67/00 , B33Y10/00 , B33Y80/00 , C23C18/31 , C23C18/16 , C25D3/12 , B23K31/02
CPC分类号： C25D5/56 , B29C64/135 , B29C70/021 , B29C70/70 , B29C70/72 , B29D99/0089 , B29K2705/00 , B29L2007/002 , B33Y10/00 , B33Y80/00 , C23C18/165 , C23C18/31 , C25D3/12 , C25D7/00
摘要： Systems and method for fabricating a metal core truss panel with seamlessly embedded features in accordance with embodiments of the invention are illustrated. One embodiment includes a method for producing a metal core truss panel composite, the method including fabricating a sacrificial core truss panel including a plurality of interconnected truss members and at least one embedded feature, and plating the sacrificial core truss panel with a layer of metal forming a metal core truss panel including a plurality of interconnected metal truss members and at least one seamlessly embedded metal feature.

9. 发明申请

US20220136779A1 Systems and Methods for Thermal Management Using Separable Heat Pipes and Methods of Manufacture Thereof 有权
公开(公告)号：US20220136779A1
公开(公告)日：2022-05-05
申请号：US17453332
申请日：2021-11-02
申请人： California Institute of Technology
发明人： Weibo Chen , Benjamin I. Furst , Scott N. Roberts
IPC分类号： F28D15/02 , F28D15/04
摘要： Systems and methods for thermal management using separable heat pipes and methods of manufacture thereof. Various embodiments provide a porous insert that can be used to join or connect heat pipes. Further embodiments provide thermal management systems that are modular, expandable, reparable, by allowing for joining of evaporators, condensers, and adiabatic sections via porous inserts. Various embodiments allow for two-phase thermal management systems, where liquid and gaseous phases can be transported simultaneously. Certain embodiments incorporate heat generating components with embedded evaporators and/or condensers. Many embodiments are additively manufactured, including via 3D printing.

10. 发明申请

US20190393576A1 Thermal Management Systems for Battery Cells and Methods of Their Manufacture 审中-公开
公开(公告)号：US20190393576A1
公开(公告)日：2019-12-26
申请号：US16447824
申请日：2019-06-20
申请人： California Institute of Technology
发明人： Eric T. Sunada , Scott N. Roberts , Benjamin I. Furst , Ratnakumar V. Bugga
IPC分类号： H01M10/6569 , H01M10/613 , H01M10/653 , H01M10/6567 , H01M10/658 , H01M10/6552
摘要： Thermal management systems for battery cells and methods for their additive manufacture are provided. The thermal management systems include at least one heat pipe that physically contacts the battery cell and conforms to its geometry. Each battery cell is deposited within a separate heat pipe, and each heat pipe is disposed on a base plate, which itself connects to a heat sink. In many embodiments, the heat pipe is a two-phase heat exchanger having three major components: liquid channels, wick elements, and vapor channels. In such embodiments, the wick component comprises a porous body configured to be disposed between the liquid channels and vapor channels. The wick component may be made using a stochastic additive manufacturing process such that the wick component may take any configuration and/or such that the wick component may be directly integrated into the body of the heat pipe as a unitary piece thereof. In other embodiments, the heat pipe is a cavity with flow channels in which fluid can be pumped through. In some such embodiments, the fluid can occupy the heat pipe in a one-phase or two-phase state. This unitary heat pipe is part of a monolithic thermal management system.

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