David Lamar Hull

US Patent:

6501268, Dec 31, 2002

Filed:

Aug 18, 2000

Appl. No.:

09/641370

Inventors:

Alan S. Edelstein - Alexandria VA
David M. Hull - Adelphi MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01R 3302

US Classification:

324244, 324225, 324251, 324252, 324259

Abstract:

A magnetic sensing device that senses low frequency magnetic fields by using movable flux concentrators that modulate the observed low frequency signal. The concentrator oscillates at a modulation frequency much greater than the observed magnetic field being sensed by the device. The modulation shifts this observed signal to higher frequencies and thus minimizes 1/f-type noise. This is preferably accomplished by the oscillatory motion of a microelectromechanical (MEMS)âtype magnetic flux concentrator operated with a magnetic sensor, preferably made on a common substrate. Such a combined device can be used in a magnetometer. Such a device is small, low-cost and has low-power-consumption requirements. The magnetic sensor can be a Hall effect or other type of magnetic sensor. At least one modulating flux concentrator is used with the magnetic sensor.

US Patent:

20210030205, Feb 4, 2021

Filed:

Oct 21, 2020

Appl. No.:

17/076234

Inventors:

- Potomac MD, US
Joseph D. Ellena - Herndon VA, US
Thomas Musman - Woodbridge VA, US
Noah Bergel - Lovettsville VA, US
Aurelio Reyes - Mount Dora FL, US
Richard Simmers - Boxford MA, US
Pat Lollar - Cookeville TN, US
David Hull - Cookeville TN, US

Assignee:

Revolution Cooking, LLC - Potomac MD

International Classification:

A47J 37/08
F24C 7/06
H05B 3/12
F24C 7/04
H05B 6/64
H05B 3/24
H05B 3/03
A47J 36/32
A47J 27/00
A47J 37/06
H01C 17/00
H01C 17/28
H05B 3/06
H05B 3/26

Abstract:

A heating element for a cooking appliance includes terminals that act as electrically conductive contact points. One or more buses are arranged between the terminals, and connect one or more heating element segments in a zig-zag configuration. The heating element segments are connected in series and are arranged parallel with one another. Each heating element segment includes a plurality of cutouts linked together and having an elliptical shape. The terminals, heating element segments, and buses are a continuous single sheet of conductive material. A method of making the heating element includes forming a pattern into the sheet of conductive material by etching the pattern into the conductive sheet using photolithography.

US Patent:

20190008322, Jan 10, 2019

Filed:

Jan 5, 2018

Appl. No.:

15/863782

Inventors:

- Potomac MD, US
Joseph D. Ellena - Herndon VA, US
Thomas Musman - Woodbridge VA, US
Noah Bergel - Lovettsville VA, US
Aurelio Reyes - Mount Dora FL, US
Richard Simmers - Boxford MA, US
Pat Lollar - Cookeville TN, US
David Hull - Cookeville TN, US

International Classification:

A47J 37/08
H05B 3/03
H05B 3/06
H05B 3/26
F24C 7/04
H01C 17/28
H01C 17/00

Abstract:

A heating element for a cooking appliance includes terminals that act as electrically conductive contact points. One or more buses are arranged between the terminals, and connect one or more heating element segments in a zig-zag configuration. The heating element segments are connected in series and are arranged parallel with one another. Each heating element segment includes a plurality of cutouts linked together and having an elliptical shape. The terminals, heating element segments, and buses are a continuous single sheet of conductive material. A method of making the heating element includes forming a pattern into the sheet of conductive material by etching the pattern into the conductive sheet using photolithography.

US Patent:

20180325311, Nov 15, 2018

Filed:

Jan 5, 2018

Appl. No.:

15/863791

Inventors:

Benjamin F. Feldman - Reston VA, US
Martin Fisher - Crownsville MD, US
Jay Hunt - Beaver Falls PA, US
Dan Morgan - Gaithersburg MD, US
Joseph Ellena - Herndon VA, US
Thomas Musman - Woodbridge VA, US
Noah Bergel - Lovettsville VA, US
Aurelio Reyes - Mount Dora FL, US
Richard Simmers - Boxford MA, US
Pat Lollar - Cookeville TN, US
David Hull - Cookeville TN, US

International Classification:

A47J 36/32
A47J 27/00
A47J 37/06

Abstract:

A cooking appliance, system, and method use one or more split-surface-area radiative heating elements and may also use one or more additional heating elements, such as microwave and convection heating elements, to heat or cook food. The radiative heating elements are used in a cooking chamber having an improved geometry. A controller includes features to adaptively learn and adjust cooking recipes based on modifications and user ratings of a particular cooking recipe or based on learning in response to analysis of modifications and user ratings of plural cooking recipes. The controller may learn from ratings of other users of similar cooking appliances via a network connection.