David B Fields

US Patent:

8441191, May 14, 2013

Filed:

Oct 24, 2008

Appl. No.:

12/258107

Inventors:

Jonathan Michael Protz - Durham NC, US
Marc Stephen Verdiel - Chicago IL, US
David James Fields - Burke VA, US

Assignee:

Logos Technologies LLC - Fairfax VA

International Classification:

H01J 25/10

US Classification:

315 539, 330 44

Abstract:

The present invention relates to the formation of a vacuum electronics circuit by the fusion bonding of multiple substrate wafers, e. g. , silicon, copper, or other suitable conductive material, each etched using DRIE, cut using EDM, or machined by other suitable means. Other aspects of the invention relate to the alignment of a cathode with tube by fusion bonding the cathode wafer to a tube built using the fabrication methods described herein. Yet other aspects involve the alignment of dies or wafers during the fabrication of a vacuum electronics device using the “lego” technique outlined herein. In yet other aspects, fabrication methods are described.

US Patent:

20110154822, Jun 30, 2011

Filed:

Dec 29, 2010

Appl. No.:

12/980740

Inventors:

Jonathan M. Protz - Durham NC, US
William G. Gardner - Durham NC, US
Justin W. Jaworski - Tampa FL, US
Andrew P. Camacho - Miami FL, US
Hardy S. Shen - Durham NC, US
David J. Fields - Burke VA, US
Stefan Oliver Pelekies - , US

International Classification:

F01K 19/08
F01K 25/00
F28D 15/00

US Classification:

60651, 60670, 60654, 16510419

Abstract:

Heat engines suitable for large-scale or micro-scale fabrication supply power from a power turbine. The power turbine is driven in part by an ejector in which a working fluid is utilized as a motive flow. Fuel utilized for combustion may also be utilized as a phase-changing working fluid and as the motive flow driving the ejector. Heat exchangers particularly suitable for micro-scale implementation are also disclosed.

US Patent:

20120229607, Sep 13, 2012

Filed:

Sep 17, 2010

Appl. No.:

13/496829

Inventors:

Patrick T. Baker - Washington DC, US
Geoffrey G. Hazel - Raleigh NC, US
David J. Fields - Burke VA, US
Anna O. Bilska-Wolak - Raleigh NC, US

Assignee:

LOGOS TECHNOLOGIES, INC. - Arlington VA

International Classification:

H04N 13/02
G06T 17/00

US Classification:

348 46, 345420, 348E13074

Abstract:

In general, the present disclosure relates to persistent surveillance (PS), wide medium and small in area, and large volume data streaming (LVSD), e.g., from orbiting aircraft or spacecraft, and PS/LVSD specific data compression. In certain aspects, the PS specific data or LVSD compression and image alignment may utilize registration of images via accurate knowledge of camera position, pointing, calibration, and a 3D model of the surveillance area. Photogrammetric systems and methods to compress PS specific data or LVSD while minimizing loss are provided. In certain embodiments, to achieve data compression while minimizing loss, a depth model is generated, and imagery is registered to the depth model.

US Patent:

20130117078, May 9, 2013

Filed:

Aug 29, 2012

Appl. No.:

13/598142

Inventors:

David Fields - Alexandria VA, US
Gary Attenberg - Buffalo MN, US

International Classification:

G06Q 10/00
G06Q 90/00

US Classification:

705 13, 235378

Abstract:

A control and management system for defined areas, employs a card reader, vehicle sensing loop detectors and electric eyes, entrance door sensors and operators, truck securement devices, cameras, a control system with memory, and a wireless connection or internet/intranet connection, is provided to produce event log documentation. The event information is readily accessible by management or supervisory personnel, to see all of the recorded information concerning a specified event. Thus, an event can be readily reconstructed after the fact, using all available sensors and other information relevant to a manager or supervisor. An alert can be issued whenever an abnormal or unauthorized event occurs during operations. A QR code reader can be provided which communicates with the system to enable a person carrying the cell phone to scan QR codes at specified locations or on specified items or vehicles.

US Patent:

20200333756, Oct 22, 2020

Filed:

Jun 30, 2020

Appl. No.:

16/917806

Inventors:

Arthur Steven Weik - Fairfax VA, US
Gary A. Altenberg - Buffalo MN, US
Aaron Altscher - Columbia MD, US
David Fields - Baltimore MD, US

International Classification:

G05B 19/042
E05F 15/70
G06F 16/23

Abstract:

A system is provided which is designed for the management of the data and data files associated with the manufacturing, installation, operation and maintenance of a door motor control system typically found on industrial doors and gates. The system uses elements and programs useful to anyone familiar with common technologies such as APPs on Smartphones, thumb drives and touch screen display technologies. Since this familiarity already exists as a standard expertise among a broad range of people, the training component necessary to achieve competency in the field of motorized doors can be greatly reduced.

US Patent:

20190281120, Sep 12, 2019

Filed:

Mar 9, 2018

Appl. No.:

15/917554

Inventors:

Arthur Steven Weik - Fairfax VA, US
Gary A. Altenberg - Buffalo MN, US
Aaron Altscher - Columbia MD, US
David Fields - Baltimore MD, US

International Classification:

H04L 29/08
E05F 15/603

Abstract:

A system is designed for the management of the data and data files associated with the manufacturing, installation, operation and maintenance of a door motor control system typically found on industrial doors and gates. The system uses elements and programs useful to anyone familiar with common technologies such as APPs on Smartphones, thumb drives and touch screen display technologies. Since this familiarity already exists as a standard expertise among a broad range of people, the training component necessary to achieve competency in the field of motorized doors can be greatly reduced.

US Patent:

20150081736, Mar 19, 2015

Filed:

Aug 29, 2014

Appl. No.:

14/473050

Inventors:

Arthur Steven Weik - Fairfax VA, US
Gary A. Altenberg - Buffalo MN, US
James Ternus - Rogers MN, US
David Fields - Alexandria VA, US

International Classification:

H04L 29/06
G06F 17/30

US Classification:

707783

Abstract:

An on-line portal access and management system uses multiple ip devices organized on a server application with multiple level restricted log-in and event logging. The program with multiple connected IP devices allows the credentialed user to access and organize the capabilities of the multiple system connected IP devices through a single login portal. The IP devices operate equipment such as doors, gates, cameras, access control systems, VOIP intercoms, HVAC systems and other IP based systems typically found in multi-story buildings or multi building campuses. The IP devices generate data logged and archived to the IP device memory media or local data storage device. The application program sifts the IP device generated data for user important information and moves important IP device generated information to the server based memory and data files.