公开(公告)号：US20190078814A1

公开(公告)日：2019-03-14

申请号：US15698940

申请日：2017-09-08

Applicant: Raytheon Company

Inventor： Ryan Yates ,  Theodore J. Conrad ,  Brian R. Schaefer

IPC: F25B9/14 ,  F25B9/10

Abstract: A pulse-tube cryocooler includes a compressor piston that is axially aligned with a pulse tube. The compressor piston is an annular piston that has a central hole around its axis. An inertance tube, connected to one end of the pulse tube, runs through the central hole in the compressor piston. The cryocooler also includes a balancer that moves in opposition to the compressor piston, to offset the forces in moving the compressor piston. The balancer may also be axially aligned with the pulse tube, the annular piston, and the inertance tube. The alignment of the compressor piston, the pulse tube, and the inertance tube aligns the forces produced by movement of fluid within the cryocooler. This makes it easier to cancel mechanical forces produced by the cryocooler in operation, since all (or most) of the forces are in a single axial direction.

公开(公告)号：US10234075B2

公开(公告)日：2019-03-19

申请号：US15426451

申请日：2017-02-07

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  Robert D. Schaefer ,  Andrew L. Bullard ,  Brian R. Schaefer ,  Ryan Yates

IPC: F16F13/00 ,  F16M13/02 ,  F25B9/14 ,  F16C35/00 ,  F16C35/02 ,  F16C29/00 ,  F16F1/32

Abstract: A system includes a device, a support structure, and a flexure bearing configured to connect the device to the support structure. The flexure bearing includes an outer hub and an inner hub, where the hubs are configured to be secured to the support structure and to the device. The flexure bearing also includes multiple sets of flexure arms connecting the outer hub and the inner hub, where each set of flexure arms includes symmetric flexure arms. The flexure bearing further includes multiple bridges, where each bridge connects one of the flexure arms in one set of flexure arms to one of the flexure arms in an adjacent set of flexure arms.

公开(公告)号：US10520227B2

公开(公告)日：2019-12-31

申请号：US15698940

申请日：2017-09-08

Applicant: Raytheon Company

Inventor： Ryan Yates ,  Theodore J. Conrad ,  Brian R. Schaefer

IPC: F25B9/14 ,  F25B9/10

Abstract: A pulse-tube cryocooler includes a compressor piston that is axially aligned with a pulse tube. The compressor piston is an annular piston that has a central hole around its axis. An inertance tube, connected to one end of the pulse tube, runs through the central hole in the compressor piston. The cryocooler also includes a balancer that moves in opposition to the compressor piston, to offset the forces in moving the compressor piston. The balancer may also be axially aligned with the pulse tube, the annular piston, and the inertance tube. The alignment of the compressor piston, the pulse tube, and the inertance tube aligns the forces produced by movement of fluid within the cryocooler.

公开(公告)号：US20150192329A1

公开(公告)日：2015-07-09

申请号：US14151408

申请日：2014-01-09

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  Michael J. Ellis ,  Lowell A. Bellis ,  James R. Chow ,  Brian R. Schaefer ,  Troy T. Matsuoka

IPC: F25B9/14

CPC classification number: F25B9/14 ,  F25B9/10 ,  F25B9/145 ,  F25B2309/003 ,  F25B2309/1415

Abstract: An apparatus includes a regenerator configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The regenerator includes an anisotropic thermal layer configured to reduce a flow of heat axially along the regenerator and to spread the absorbed heat radially or laterally in a plane of the anisotropic thermal layer. The anisotropic thermal layer includes at least one allotropic form of carbon. The anisotropic thermal layer could have a higher radial or lateral thermal conductivity and a lower axial thermal conductivity. The anisotropic thermal layer could include carbon nanotubes and/or graphene. The regenerator could include multiple anisotropic thermal layers that divide the regenerator into multiple segments, where the anisotropic thermal layers are configured to reduce heat transfer between adjacent segments of the regenerator.

Abstract translation: 一种装置包括再生器，其被配置为当流体在低温冷却器的暖端和冷端之间流动时，将热量传递给流体并吸收来自流体的热量。 再生器包括各向异性热层，其被配置为沿着再生器轴向减小热量流并且在各向异性热层的平面内径向或横向扩散吸收的热量。 各向异性热层包括至少一种同素异形体的碳。 各向异性热层可具有更高的径向或横向热导率和较低的轴向热导率。 各向异性热层可以包括碳纳米管和/或石墨烯。 再生器可以包括将再生器分成多个段的多个各向异性热层，其中各向异性热层被配置为减少再生器的相邻段之间的热传递。

公开(公告)号：US20210190126A1

公开(公告)日：2021-06-24

申请号：US16719618

申请日：2019-12-18

Applicant: Raytheon Company

Inventor： Robert D. Schaefer ,  Andrew L. Bullard ,  Brian R. Schaefer ,  Michael C. Barr

IPC: F16B39/282 ,  F16B39/24

Abstract: A precision adjustment fastener mechanism comprises a base, a platform, and a locking push-pull fastener assembly. The base has a first aperture and the platform has a second aperture. The fastener assembly is disposed within the second aperture. The fastener assembly comprises a clamping fastener having a portion positioned in the first aperture, a sleeve having a third aperture extending along an axis of the sleeve. The clamping fastener is positioned within the third aperture. The sleeve comprises a first portion moveable relative to a second portion along the axis. The first portion and the second portion each comprise outer threads. An axial displacement portion separates the first and second portions and transmits a torque between the first and second portions. The axial displacement portion facilitates movement of the first and second portions to bind threads of the first and second portions with the threads of the platform,

公开(公告)号：US20180224059A1

公开(公告)日：2018-08-09

申请号：US15426451

申请日：2017-02-07

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  Robert D. Schaefer ,  Andrew L. Bullard ,  Brian R. Schaefer ,  Ryan Yates

IPC: F16M13/02 ,  F25B9/14

CPC classification number: F16M13/02 ,  F16C29/002 ,  F16C35/00 ,  F16C35/02 ,  F16C2362/52 ,  F16F1/326 ,  F25B9/14 ,  F25B2309/001

Abstract: A system includes a device, a support structure, and a flexure bearing configured to connect the device to the support structure. The flexure bearing includes an outer hub and an inner hub, where the hubs are configured to be secured to the support structure and to the device. The flexure bearing also includes multiple sets of flexure arms connecting the outer hub and the inner hub, where each set of flexure arms includes symmetric flexure arms. The flexure bearing further includes multiple bridges, where each bridge connects one of the flexure arms in one set of flexure arms to one of the flexure arms in an adjacent set of flexure arms.

公开(公告)号：US11536310B2

公开(公告)日：2022-12-27

申请号：US16719618

申请日：2019-12-18

Applicant: Raytheon Company

Inventor： Robert D. Schaefer ,  Andrew L. Bullard ,  Brian R. Schaefer ,  Michael C. Barr

IPC: F16B39/282 ,  F16B39/24

Abstract: A precision adjustment fastener mechanism comprises a base, a platform, and a locking push-pull fastener assembly. The base has a first aperture and the platform has a second aperture. The fastener assembly is disposed within the second aperture. The fastener assembly comprises a clamping fastener having a portion positioned in the first aperture, a sleeve having a third aperture extending along an axis of the sleeve. The clamping fastener is positioned within the third aperture. The sleeve comprises a first portion moveable relative to a second portion along the axis. The first portion and the second portion each comprise outer threads. An axial displacement portion separates the first and second portions and transmits a torque between the first and second portions. The axial displacement portion facilitates movement of the first and second portions to bind threads of the first and second portions with the threads of the platform.

公开(公告)号：US09488389B2

公开(公告)日：2016-11-08

申请号：US14151408

申请日：2014-01-09

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  Michael J. Ellis ,  Lowell A. Bellis ,  James R. Chow ,  Brian R. Schaefer ,  Troy T. Matsuoka

IPC: F25B9/14 ,  F25B9/10

CPC classification number: F25B9/14 ,  F25B9/10 ,  F25B9/145 ,  F25B2309/003 ,  F25B2309/1415

Abstract: An apparatus includes a regenerator configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The regenerator includes an anisotropic thermal layer configured to reduce a flow of heat axially along the regenerator and to spread the absorbed heat radially or laterally in a plane of the anisotropic thermal layer. The anisotropic thermal layer includes at least one allotropic form of carbon. The anisotropic thermal layer could have a higher radial or lateral thermal conductivity and a lower axial thermal conductivity. The anisotropic thermal layer could include carbon nanotubes and/or graphene. The regenerator could include multiple anisotropic thermal layers that divide the regenerator into multiple segments, where the anisotropic thermal layers are configured to reduce heat transfer between adjacent segments of the regenerator.

Abstract translation: 一种装置包括再生器，其被配置为当流体在低温冷却器的暖端和冷端之间流动时，将热量传递给流体并吸收来自流体的热量。 再生器包括各向异性热层，其被配置为沿着再生器轴向减小热量流并且在各向异性热层的平面内径向或横向扩散吸收的热量。 各向异性热层包括至少一种同素异形体的碳。 各向异性热层可具有更高的径向或横向热导率和较低的轴向热导率。 各向异性热层可以包括碳纳米管和/或石墨烯。 再生器可以包括将再生器分成多个段的多个各向异性热层，其中各向异性热层被配置为减少再生器的相邻段之间的热传递。

公开(公告)号：US09285073B2

公开(公告)日：2016-03-15

申请号：US13963842

申请日：2013-08-09

Applicant: Raytheon Company

Inventor： Michael J. Ellis ,  Lowell A. Bellis ,  Brian R. Schaefer ,  Robert D. Schaefer ,  Marco K. Kwan

IPC: F16M13/00 ,  F16M13/02 ,  F16F3/00 ,  F25B9/14

CPC classification number: F16M13/02 ,  F16F1/324 ,  F16F3/00 ,  F25B9/14 ,  F25B2309/001

Abstract: A system includes a device, a support structure, and a flexure bearing configured to connect the device to the support structure. The flexure bearing includes an outer hub and an inner hub, where the hubs are configured to be secured to the support structure and to the device. The flexure bearing also includes multiple sets of flexure arms connecting the outer and inner hubs. Each set of flexure arms includes symmetric flexure arms. The flexure bearing could include three sets of flexure arms positioned radially around a central axis of the flexure bearing and having a spacing of about 120°. Each flexure arm can follow a substantially curved path between the outer hub and the inner hub. The symmetric flexure arms in each set can be configured such that twisting of one flexure arm in one set is substantially counteracted by twisting of another flexure arm in that set.

Abstract translation: 系统包括设备，支撑结构以及被配置为将设备连接到支撑结构的弯曲轴承。 挠性轴承包括外毂和内毂，其中毂被构造成固定到支撑结构和装置。 挠性轴承还包括连接外毂和内毂的多组挠曲臂。 每组挠曲臂包括对称的弯曲臂。 挠曲轴承可以包括三组位于径向上围绕挠曲轴承的中心轴线并具有大约120°的间隔的挠曲臂。 每个弯曲臂可以沿着外毂和内毂之间的基本弯曲的路径。 每组中的对称弯曲臂可以被配置成使得一组中的一个挠曲臂的扭转通过在该组中的另一个挠曲臂的扭转基本抵消。