公开(公告)号：US11906350B2

公开(公告)日：2024-02-20

申请号：US17336964

申请日：2021-06-02

申请人： Government of the United States of America, as represented by the Secretary of Commerce

发明人： Michael Gaitan ,  Jon Clement Geist ,  Benjamin James Reschovsky ,  Akobuije Douglas Eziani Chijioke

IPC分类号： G01H9/00

CPC分类号： G01H9/002

摘要： A calibration apparatus for calibrating a laser Doppler vibrometer includes: a frequency shifter stage that: receives, from the laser Doppler vibrometer, primary laser light; produces frequency shifted light; communicates the frequency shifted light to a reflector; receives frequency shifted light reflected by the reflector; produces secondary light; and communicates the secondary light to the laser Doppler vibrometer, such that the laser Doppler vibrometer receives the secondary light from the frequency shifter stage and produces a synthetic velocity shift from the secondary light; and the reflector that receives and reflects the frequency shifted light back to the frequency shifter stage.

公开(公告)号：US20240051230A1

公开(公告)日：2024-02-15

申请号：US17887413

申请日：2022-08-12

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： David Bonanno ,  Blerta Markowski ,  Brian Hicks ,  Freddie Santiago

IPC分类号： B29C64/393 ,  B29C64/268 ,  B33Y50/02

CPC分类号： B29C64/393 ,  B29C64/268 ,  B33Y50/02 ,  B33Y30/00

摘要： Systems and methods are provided for achieving more accurate 3D printed parts than printed parts achieved by conventional means. The disclosed systems and methods reduce the need for tolerance fitting when designing 3D objects and manufacturing with stereolithographic 3D printers. Embodiments of the present disclosure enable fitted assemblies to be manufactured and produce accurate standoffs where size constraints are critical. Embodiments of the present disclosure realize these solutions without requiring modifications to the printer or the printer software.

公开(公告)号：US11897101B2

公开(公告)日：2024-02-13

申请号：US16929049

申请日：2020-07-14

申请人： Government of the United States as represented by the Secretary of the Air Force

发明人： John Richardson Harris ,  Rufus Cooksey

IPC分类号： B25B27/28

CPC分类号： B25B27/28

摘要： A flexible implement positioner that is lockably installable around abutting flanges of abutting tubes enables an implement, such as a temperature gauge, to be desirably positioned near the joint between the abutting flanges and enable the implement to monitor the joint between the flanges. The implement positioner includes a plurality of body segments hingedly connected to one another in an end to end relationship, with one end including a lock body segment and the opposite end including a lock body segment having a lock lever hingedly mounted thereon, the lock lever positionable in engagement with the lock body segment and pivotal to lockably engage the lock lever when installing the implement positioner on one of the flanges.

公开(公告)号：US20240044683A1

公开(公告)日：2024-02-08

申请号：US18486007

申请日：2023-10-12

申请人： GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE ADMINISTRATOR OF THE U.S. ,  URBANALTA CORP

发明人： Ruben KERTESZ ,  Daniel J. MURRAY, JR. ,  Michael BOLAN ,  Ryan ANDERSON ,  Chunsheng FANG

IPC分类号： G01F1/66 ,  G01F1/661 ,  H01M10/42 ,  F16M13/02 ,  E03F7/00 ,  G01F1/002 ,  G01F1/704 ,  G01F1/7086 ,  H01M50/251

CPC分类号： G01F1/662 ,  G01F1/661 ,  G01F1/666 ,  H01M10/4257 ,  F16M13/02 ,  E03F7/00 ,  G01F1/002 ,  G01F1/704 ,  G01F1/7086 ,  H01M50/251 ,  Y10T137/8158 ,  Y10T137/8359 ,  G01F1/66 ,  E03F2201/20 ,  E03F2201/40 ,  H01M2010/4271

摘要： A flow imaging and monitoring system for synchronized management of wide area drainage that includes an interposer for supporting monitoring and management equipment in a manhole, a module for illuminating water flowing in pipes at the base of the manhole, a module for monitoring responses to reflected light, a sealed and rechargeable battery pack, and a data analysis and management system to interpret data streams in real time. The interposer can be adjusted to fit the diameter of the manhole and can be adjusted to be placed under the manhole cover. The module for illuminating the flowing water can be adjusted to generate various frequencies. The support structures for the modules can be adjusted for varying pitch, roll and yaw with respect to the manhole. The data analysis and management system is supported by cloud computing.

公开(公告)号：US20240036259A1

公开(公告)日：2024-02-01

申请号：US18221962

申请日：2023-07-14

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Marcel W. Pruessner ,  Todd H. Stievater ,  Nathan F. Tyndall

IPC分类号： G02B6/27 ,  G02B6/35 ,  G02B6/126

CPC分类号： G02B6/2766 ,  G02B6/3584 ,  G02B6/126

摘要： An apparatus includes a polarization rotator or a polarization splitter. The polarization rotator and the polarization splitter each includes a first optical waveguide. The polarization rotator further includes a movable symmetry-breaking micro-electro-mechanical systems (“MEMS”) dielectric perturber separated from the first optical waveguide by a gap. The first optical waveguide and the MEMS dielectric perturber define a gap therebetween. The polarization rotator also includes a MEMS actuator moving the MEMS dielectric perturber so as to control the gap, thereby controlling polarization rotation within the first optical waveguide. The polarization splitter includes a second optical waveguide separated from the first optical waveguide by a gap. The polarization splitter also includes a MEMS actuator moving the first optical waveguide and/or the second optical waveguide so as to control the gap, thereby controlling polarization splitting between the optical waveguides.

公开(公告)号：US11885801B2

公开(公告)日：2024-01-30

申请号：US17407154

申请日：2021-08-19

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： David A. Kidwell

IPC分类号： G01N33/543 ,  G01N33/52 ,  G01N21/29 ,  G01N21/78

CPC分类号： G01N33/54388 ,  G01N21/29 ,  G01N21/78 ,  G01N33/525 ,  G01N2201/04

摘要： The present invention provides for a release system for delaying application of chemical reagents in a lateral-flow immunoassay. A chemistry release fiber comprising a permeable membrane and a chemical release agent is used to delay chemical reagent delivery to the indicator of a lateral-flow immunoassay. Also disclosed is the related method of delaying application of chemical reagents in a lateral-flow immunoassay.

公开(公告)号：US11876211B2

公开(公告)日：2024-01-16

申请号：US17018898

申请日：2020-09-11

申请人： Government of the United States of America, as represented by the Secretary of Commerce

发明人： Vladimir Pavlovich Oleshko ,  Christopher Lloyd Soles ,  Jabez Jenkins McClelland

IPC分类号： H01M4/134 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/66 ,  H01M4/1395 ,  H01M50/409

CPC分类号： H01M4/134 ,  H01M4/0423 ,  H01M4/1395 ,  H01M4/661 ,  H01M10/0525 ,  H01M50/409

摘要： A prelithiated lithium ion battery includes: ion beam implanted lithium; a cathode; and an anode disposed on the cathode and an electrolyte in electrical communication with the cathode and the anode, the cathode or the anode including the ion beam implanted lithium such that: when the cathode includes the ion beam implanted lithium, the ion beam implanted lithium is present in an absence of solid electrolyte interface composition in the cathode; and when the anode includes the ion beam implanted lithium, the ion beam implanted lithium is present in an absence of solid electrolyte interface composition in the anode.

公开(公告)号：US20240014903A1

公开(公告)日：2024-01-11

申请号：US18035896

申请日：2021-11-08

申请人： Government of the United States of America, as represented by the Secretary of Commerce

发明人： David Alexander Long ,  Benjamin James Reschovsky

IPC分类号： H04B10/50 ,  H04B10/508 ,  H04B10/556

CPC分类号： H04B10/504 ,  H04B10/508 ,  H04B10/556

摘要： Disclosed is a direct digital chirp synthesizer for generating a chirped optical frequency comb that includes: a direct digital synthesizer that receives a repetition frequency signal from a delay generator, receives a clock frequency from a frequency converter, produces a radiofrequency chirp waveform based on the repetition frequency signal and the clock frequency, and communicates the radiofrequency chirp waveform; and an electro optic modulator in electrical communication with the direct digital synthesizer and that receives the radiofrequency chirp waveform from the direct digital synthesizer, receives laser light, and produces the chirped optical frequency comb from the laser light based on the radiofrequency chirp waveform.

公开(公告)号：US20240010575A1

公开(公告)日：2024-01-11

申请号：US18472560

申请日：2023-09-22

申请人： Government of the United States, as represented by the Secretary of the Air Force

发明人： Gary Cook ,  Ronald W. Stites

IPC分类号： H01S3/16 ,  H01S3/17 ,  H01S5/30 ,  H01S5/02

CPC分类号： H01S3/1603 ,  H01S3/176 ,  H01S5/305 ,  H01S5/0213

摘要： A doped substrate having a substrate comprising at least one of a glass material, a single crystal material, a poly-crystalline material, a ceramic material, or a semiconductor material. The doped substrate includes a dopant comprising one or more transition metals, one or more rare earth elements, or a combination of both, the doped substrate characterized in that a spectral laser output of the doped substrate exhibits a nominally single frequency having a linewidth less than about 5 nm.

公开(公告)号：US11867775B2

公开(公告)日：2024-01-09

申请号：US17435807

申请日：2020-03-04

申请人： UNIVERSITY OF MARYLAND, COLLEGE PARK ,  GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

发明人： Randolph Elmquist ,  Albert Rigosi ,  Mattias Kruskopf

IPC分类号： G01R33/00 ,  G01R33/035 ,  G01R33/07 ,  H10N60/81 ,  H10N60/85

CPC分类号： G01R33/0052 ,  G01R33/035 ,  G01R33/07 ,  H10N60/81 ,  H10N60/85

摘要： A quantum Hall resistance apparatus is to improve resistance standards and includes a substrate, a graphene epitaxially grown on the substrate and having a plurality of first contact patterns at edges of the graphene, a plurality of contacts, each including a second contact pattern and configured to connect to a corresponding first contact pattern, and a protective layer configured to protect the graphene and to increase adherence between the first contact patterns and the second contact patterns. The contacts become a superconductor at a temperature lower than or equal to a predetermined temperature and under up to a predetermined magnetic flux density.