Mark R Mathews

US Patent:

6762577, Jul 13, 2004

Filed:

Nov 14, 2001

Appl. No.:

09/993783

Inventors:

Steven Gray - Prospect KY
Wolfgang Daum - Louisville KY
John Steven Holmes - Sellersburg IN
Rollie Richard Herzog - Louisville KY
Mark Robert Mathews - Lombard IL

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02P 729

US Classification:

318268, 318432, 388909

Abstract:

A method for controlling speed in a pulse-width-modulation-controlled motor powered by a load voltage source is provided. The method includes the steps of measuring the motor load voltage, and setting a pulse-width-modulation duty cycle based on the measured voltage.

US Patent:

6782706, Aug 31, 2004

Filed:

Dec 22, 2000

Appl. No.:

09/742545

Inventors:

John S. Holmes - Sellersburg IN
Rollie R. Herzog - Louisville KY
Mark Robert Mathews - Lombard IL
Robert M. Bultman - Smithfield KY
Tim Holder - Lagrange KY
Wolfgang Daum - Louisville KY

Assignee:

General Electric Company - Schenectady NY

International Classification:

F25B 4902

US Classification:

62229, 62127, 62203, 62157

Abstract:

A control system for a refrigeration system having a refrigeration compartment and a quick chill/thaw pan. A main controller board, electrically connected to a temperature adjustment board and a dispenser board through the serial communications bus, controls the temperature of the refrigeration compartment and the quick chill/thaw pan. The control system accepts a plurality of inputs to determine a refrigeration mode and to execute a plurality of software algorithms to control the refrigeration compartment as both a chill pan to rapidly chill food and beverage items without freezing and a thaw pan to timely thaw frozen items at controlled temperature levels.

US Patent:

6795871, Sep 21, 2004

Filed:

Dec 22, 2000

Appl. No.:

09/742549

Inventors:

Tam Nolan - Solana Beach CA
Wolfgang Daum - Erie PA
Rollie Richard Herzog - Louisville KY
Mark Robert Mathews - Lombard IL
Robert Marten Bultman - Smithfield KY
John Steven Holmes - Sellersburg IN

Assignee:

General Electric Company - Schenectady NY

International Classification:

G06F 1300

US Classification:

710 8, 710 9, 710 11, 710 15, 710 16, 710 33

Abstract:

A control system for an appliance utilizing a plurality of peripheral devices includes a controller and a communications bus coupled to the plurality of peripheral devices and to the controller. The controller is configured to receive data from the peripheral devices over the communications bus and transmit control operations to the peripheral devices based on the data received. The communications bus reduces overall wiring requirements due to elimination or reduction of power wiring of the peripheral devices, facilitates distributed displays and human machine interfaces, and allows model differentiation with late point identification by a population of bus connections with a sensor, display, interface, or a blank. A data collision detection scheme is also provided to ensure proper communication along the bus.

US Patent:

7005983, Feb 28, 2006

Filed:

Jan 5, 2001

Appl. No.:

09/754592

Inventors:

John Steven Holmes - Sellersburg IN, US
Rollie Richard Herzog - Louisville KY, US
Mark Robert Mathews - Lombard IL, US
Robert Marten Bultman - Smithfield KY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G08B 13/08

US Classification:

3405456, 3406861, 49 13

Abstract:

A detection apparatus for detecting refrigerator door openings is coupled to at least one switch configured to be activated by a door opening. When the door is opened, the switch is activated and inputs a signal to the detection apparatus. The detection apparatus rectifies the signal; and phase-shifts the rectified signal so that it leads or lags the line voltage. The shifted output signal is fed to a processor that detects the opening of the door based upon the shifted signal. Signals output by a plurality of switches that generate a signal when activated mixed using an opto-coupler. Relative impedance of the lead and lag circuits may be adjusted to differentiate a phase shift of one shifted signal relative to another signal. The processor converts a value in degrees of phase shifting of the mixed signal to a time value, and based upon the time value, the processor determines which of the doors is open.

US Patent:

7644590, Jan 12, 2010

Filed:

Aug 16, 2004

Appl. No.:

10/919081

Inventors:

John S. Holmes - Sellersburg IN, US
Rollie R. Herzog - Louisville KY, US
Mark Robert Mathews - Lombard IL, US
Robert M. Bultman - Smithfield KY, US
Tim Holder - Lagrange KY, US
Wolfgang Daum - Louisville KY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F25D 17/06
F25B 29/00

US Classification:

62 90, 165 63

Abstract:

A control system for a refrigeration system having a refrigeration compartment and a quick chill/thaw pan. A main controller board, electrically connected to a temperature adjustment board and a dispenser board through the serial communications bus, controls the temperature of the refrigeration compartment and the quick chill/thaw pan. The control system accepts a plurality of inputs to determine a refrigeration mode and to execute a plurality of software algorithms to control the refrigeration compartment as both a chill pan to rapidly chill food and beverage items without freezing and a thaw pan to timely thaw frozen items at controlled temperature levels.

US Patent:

7906875, Mar 15, 2011

Filed:

Sep 26, 2005

Appl. No.:

11/236077

Inventors:

David W. Caldwell - Holland MI, US
Rick L. Oppor - Schaumburg IL, US
Anthony V. Gioiosa - Justice IL, US
Robert B. Campbell - Naperville IL, US
Thomas M. Schreiber - Wheaton IL, US
Bahar N. Wadia - Bartlett IL, US
Mark R. Mathews - Lombard IL, US
Donald Charles Mueller - Aurora IL, US
Daniel Eavenson - Tinley Park IL, US

Assignee:

TouchSensor Technologies, LLC - Wheaton IL

International Classification:

H01H 3/00
H03K 17/975

US Classification:

307139, 200600

Abstract:

A touch switch apparatus for detecting the presence of an object such as a human appendage, the apparatus having a touch pad, an electric field generated about the touch pad and also having a preferably integrated and local control circuit connected to the touch pad and to a controlled device. Practical applications for touch switch apparatus, including use of touch switch apparatus in connection with other structure to emulate mechanical switches.

US Patent:

8227940, Jul 24, 2012

Filed:

Feb 14, 2011

Appl. No.:

13/027080

Inventors:

David W. Caldwell - Holland MI, US
Rick L. Oppor - Schaumburg IL, US
Anthony V. Gioiosa - Justice IL, US
Robert B. Campbell - Naperville IL, US
Thomas M. Schreiber - Wheaton IL, US
Bahar N. Wadia - Bartlett IL, US
Mark R. Mathews - Lombard IL, US
Donald Charles Mueller - Aurora IL, US
Daniel Eavenson - Tinley Park IL, US

Assignee:

TouchSensor Technologies, LLC - Wheaton IL

International Classification:

H01H 3/00
H03K 17/975

US Classification:

307139, 200600

Abstract:

A touch switch apparatus emulating a mechanical switch includes a field effect sensor and an electric field stimulator mechanically associated with the field effect sensor. A field generation signal applied to the field effect sensor causes an electric field to be generated thereabout. The electric field stimulator can be moved between first and second positions with respect to the field effect sensor. When moved into proximity with the field effect sensor, the electric field stimulator disturbs the electric field. A detection circuit coupled to the field effect sensor detects and responds to the disturbance to the electric field.

US Patent:

20100253653, Oct 7, 2010

Filed:

Apr 1, 2010

Appl. No.:

12/752785

Inventors:

Deron Stambaugh - Waterman IL, US
Mark Mathews - Lombard IL, US
Mark Burleson - Aurora IL, US

Assignee:

TOUCHSENSOR TECHNOLOGIES, LLC - Wheaton IL

International Classification:

G06F 3/033

US Classification:

345184

Abstract:

A virtual knob interface includes a substrate, a virtual knob associated with the substrate, and a number of touch sensors associated with the substrate and with the virtual knob. The virtual knob and touch sensor are configured and arranged such that the touch sensors detect manipulation of the virtual knob by a user. The knob can be removable from the substrate. Features can be provided to disable control of a device or function controlled by the knob when the knob has been removed.