David R Nash

US Patent:

8491135, Jul 23, 2013

Filed:

Apr 5, 2011

Appl. No.:

13/080556

Inventors:

Margaret K. Brown - Seattle WA, US
George Thomas Valliath - Winnetka IL, US
David R. Nash - Arlington WA, US

Assignee:

Microvision, Inc. - Redmond WA

International Classification:

G03B 21/14
H03L 7/00
H04N 9/74
H04N 5/33
G02F 1/01
G01C 5/00
G01B 11/14

US Classification:

353121, 353122, 353 97, 348589, 348590, 348164, 250221, 250330, 2503381, 2503391, 2504951, 356 31, 356602, 356623

Abstract:

An apparatus determines a cursor position in an illumination field of a projector. An obstruction is detected in the illumination field. The cursor position is determined as the point on the obstruction furthest from where the obstruction crosses a border of the illumination field. A distance to the point on the obstruction is determined and compared to a distance to a point not on the obstruction. Gestures are recognized as a function of movement of the obstruction and the determined distances.

US Patent:

20120194399, Aug 2, 2012

Filed:

Oct 14, 2011

Appl. No.:

13/317338

Inventors:

Adam Bily - Seattle WA, US
Anna K. Boardman - Allston MA, US
Russell J. Hannigan - Sammamish WA, US
John Hunt - Knoxville TN, US
Nathan Kundtz - Kirkland WA, US
David R. Nash - Arlington WA, US
Ryan Allan Stevenson - Maple Valley WA, US
Philip A. Sullivan - Bozeman MT, US

International Classification:

H01Q 13/00
H01Q 1/00

US Classification:

343772, 343700 R

Abstract:

Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are complementary metamaterial elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.

US Patent:

20130115131, May 9, 2013

Filed:

Nov 3, 2011

Appl. No.:

13/373138

Inventors:

Michael C. Hegg - Seattle WA, US
David R. Nash - Arlington WA, US
Benjamin K. Wilson - Kirkland WA, US

International Classification:

A61L 2/08

US Classification:

422 22, 422307

Abstract:

Solutions for limiting the undesirable spread of pathogens by indirect contact are provided. The solutions involve heat-sanitization of contact regions on articles or fixtures by flowing selected electromagnetic radiation energy through underlying waveguide structures substantially parallel to the contact regions.

US Patent:

20200313466, Oct 1, 2020

Filed:

Apr 13, 2020

Appl. No.:

16/846973

Inventors:

- Bellevue WA, US
Jeffrey A. Bowers - Bellevue WA, US
Joseph A. Hagerty - Seattle WA, US
Russell J. Hannigan - Sammamish WA, US
Guy S. Lipworth - Seattle WA, US
David R. Nash - Arlington WA, US
Matthew S. Reynolds - Seattle WA, US
Clarence T. Tegreene - Mercer Island WA, US
Yaroslav A. Urzhumov - Bellevue WA, US

International Classification:

H02J 50/70
H02J 50/23
H04W 52/28
H02J 50/27
H02J 50/90
H02J 50/80
H01Q 3/24
B64C 39/02
H01Q 1/24
H01Q 1/28
H01Q 15/00
H01Q 5/335

Abstract:

System and methods are described herein for providing wireless power to a target device, such as a laptop computer, a mobile phone, a vehicle, robot, or an unmanned aerial vehicle or system (UAV) or (UAS). A tunable multi-element transmitter may transmit electromagnetic radiation (EMR) to the target device using any of a wide variety of frequency bands. A location determination subsystem and/or range determination subsystem may determine a relative location, orientation, and/or rotation of the target device. For a target device within a distance range for which a smallest achievable waist of the Gaussian beam of the EMR at an operational frequency is smaller than the multi-element EMR receiver of the target device, a non-Gaussian beamform may be determined to increase efficiency, decrease overheating, reduce spillover, increase total power output of rectenna receivers on the target device, or achieve another target power delivery goal.

US Patent:

20200119591, Apr 16, 2020

Filed:

Oct 11, 2018

Appl. No.:

16/157680

Inventors:

- Bellevue WA, US
Lawrence F. Arnstein - Seattle WA, US
Jeffrey A. Bowers - Bellevue WA, US
Joseph A. Hagerty - Seattle WA, US
Russell J. Hannigan - Sammamish WA, US
Guy S. Lipworth - Seattle WA, US
David R. Nash - Arlington WA, US
Matthew S. Reynolds - Seattle WA, US
Clarence T. Tegreene - Mercer Island WA, US
Yaroslav A. Urzhumov - Bellevue WA, US

International Classification:

H02J 50/20
H02J 50/40
H02J 50/80
B60L 53/12

Abstract:

Systems and methods are provided for various tunable multi-timescale wireless rectification systems. Tunable multi-timescale wireless rectification systems may include multiple feedback control loops, systems, or sub-systems that modify characteristics of components of a wireless rectification system on various timescales. A wireless rectification system may include antennas, impedance-matching components, rectifying devices, DC-to-DC converters, and/or load controllers. Two or more feedback controls may function on different timescales to modify one or more characteristics or functionalities of components of the wireless rectification system in response to monitored AC and/or DC power values at various locations within the wireless rectification system. Feedback controls operating on various timescales may include antenna feedback controls, impedance feedback controls, rectifying feedback controls, and/or DC feedback controls.

US Patent:

20190341812, Nov 7, 2019

Filed:

May 6, 2019

Appl. No.:

16/404416

Inventors:

- Bellevue WA, US
Daniel Arnitz - Seattle WA, US
Jeffrey A. Bowers - Bellevue WA, US
Joseph A. Hagerty - Seattle WA, US
Guy S. Lipworth - Seattle WA, US
David R. Nash - Arlington WA, US
Matthew S. Reynolds - Seattle WA, US
Clarence T. Tegreene - Mercer Island WA, US

International Classification:

H02J 50/20
H02J 50/90
H01Q 15/14
B60L 53/36
B60L 53/14
H02J 7/02
B64C 39/02
B64D 47/00

Abstract:

Systems and methods are described herein for providing wireless power to a mobile device, such as an aerial mobile device like an unmanned aerial vehicle (UAV). A navigational constraint model may prescribe a navigation path along which a wireless power transmission system can provide wireless power to the mobile device. Deviations from the prescribed path may require the mobile device to self-power. The prescription of a navigation path allows for the use of reduced-complexity wireless power transmitters that are fully capable of servicing the prescribed path. Multiple embodiments of prescribed paths with various limitations and features are set forth herein, along with multiple embodiments of wireless power transmission systems of reduced complexity and functionality to fully service the various embodiments of prescribed paths.

US Patent:

20190215948, Jul 11, 2019

Filed:

Jan 9, 2018

Appl. No.:

15/866301

Inventors:

- Bellevue WA, US
Joseph Hagerty - Seattle WA, US
Russell J. Hannigan - Sammamish WA, US
Guy S. Lipworth - Seattle WA, US
David R. Nash - Arlington WA, US
Matthew S. Reynolds - Seattle WA, US
Yaroslav A. Urzhumov - Bellevue WA, US

International Classification:

H05K 1/02
H05K 1/18

Abstract:

According to various embodiments, heat can be dissipated from a heat producing component mounted on a first side of a printed circuit board through a securing post extending out of the first side of the printed circuit board. The securing post can be configured to attach to a heat sink through a fastening mechanism. Subsequently, the securing post can transfer heat received from the heat producing component to the heat sink as part of dissipating the heat from the heat product component. The securing post can receive heat from the heat producing component through a printed circuit board heat transfer path integrated as part of the printed circuit board. The heat transfer path can include one or more thermal vias and one or more thermally conductive layers used to transfer the heat from the heat producing component to the securing post.

US Patent:

20190173324, Jun 6, 2019

Filed:

Dec 5, 2017

Appl. No.:

15/832612

Inventors:

- Bellevue WA, US
Jeffrey A. Bowers - Bellevue WA, US
Joseph A. Hagerty - Seattle WA, US
Russell J. Hannigan - Sammamish WA, US
Guy S. Lipworth - Seattle WA, US
David R. Nash - Arlington WA, US
Matthew S. Reynolds - Seattle WA, US
Clarence T. Tegreene - Mercer Island WA, US
Yaroslav A. Urzhumov - Bellevue WA, US

International Classification:

H02J 50/70
H02J 50/23
H04W 52/28
H02J 50/27
H02J 50/90
H01Q 1/24
H02J 50/80
H01Q 3/24
B64C 39/02

Abstract:

System and methods are described herein for providing wireless power to a target device, such as a laptop computer, a mobile phone, a vehicle, robot, or an unmanned aerial vehicle or system (UAV) or (UAS). A tunable multi-element transmitter may transmit electromagnetic radiation (EMR) to the target device using any of a wide variety of frequency bands. A location determination subsystem and/or range determination subsystem may determine a relative location, orientation, and/or rotation of the target device. For a target device within a distance range for which a smallest achievable waist of the Gaussian beam of the EMR at an operational frequency is smaller than the multi-element EMR receiver of the target device, a non-Gaussian beamform may be determined to increase efficiency, decrease overheating, reduce spillover, increase total power output of rectenna receivers on the target device, or achieve another target power delivery goal.