David M. Messersmith

Person

Kenosha, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for detecting welded contacts in an electromagn...
- Patent number 11,901,145
- Issue date Feb 13, 2024
- Rockwell Automation Technologies, Inc.
- Kyle B. Adkins
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Predicting zero-crossings for point-on-wave (POW) switching techniques
- Patent number 11,830,693
- Issue date Nov 28, 2023
- Rockwell Automation Technologies, Inc.
- Kyle B. Adkins
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Systems and methods for controlling contactor open time
- Patent number 11,676,786
- Issue date Jun 13, 2023
- Rockwell Automation Technologies, Inc.
- Andrew E. Carlson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Relay circuitry with self regulating charging
- Patent number 11,303,275
- Issue date Apr 12, 2022
- Rockwell Automation Technologies, Inc.
- David W. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dual PWM relay driver with diagnostics for functional safety system
- Patent number 11,114,842
- Issue date Sep 7, 2021
- Rockwell Automation Technologies, Inc.
- Yanbin Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Systems and methods for dynamically switching a load of a current t...
- Patent number 10,958,062
- Issue date Mar 23, 2021
- Rockwell Automation Technologies, Inc.
- Andrew E Carlson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Parameter estimation system and method for an induction motor
- Patent number 9,880,223
- Issue date Jan 30, 2018
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Quasi vector motor controller
- Patent number 9,685,898
- Issue date Jun 20, 2017
- Rockwell Automation Technologies, Inc.
- Kun Wei
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor winding heater systems and methods
- Patent number 9,518,570
- Issue date Dec 13, 2016
- Rockwell Automation Technologies, Inc.
- David Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Quasi variable frequency motor controller
- Patent number 9,350,275
- Issue date May 24, 2016
- Rockwell Automation Technologies, Inc.
- Kun Wei
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Parameter estimation system and method for an induction motor
- Patent number 8,742,767
- Issue date Jun 3, 2014
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control method and system with feedback indicative of load flux
- Patent number 8,547,050
- Issue date Oct 1, 2013
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling motor torque
- Patent number 8,519,662
- Issue date Aug 27, 2013
- Rockwell Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control method and system with feedback indicative of load flux
- Patent number 8,203,304
- Issue date Jun 19, 2012
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control method and system
- Patent number 8,138,709
- Issue date Mar 20, 2012
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching apparatus and method
- Patent number 7,672,096
- Issue date Mar 2, 2010
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
System and method for transient-based motor speed estimation with t...
- Patent number 7,538,507
- Issue date May 26, 2009
- Rockwell International Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System and method for transient-based motor speed estimation with t...
- Patent number 7,227,326
- Issue date Jun 5, 2007
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor controller
- Patent number 6,803,741
- Issue date Oct 12, 2004
- Rockwell Automation Technologies, Inc.
- David Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Bumpless rotating start
- Patent number 5,461,296
- Issue date Oct 24, 1995
- Eaton Corporation
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC braking of inverter-driven AC motors
- Patent number 4,990,844
- Issue date Feb 5, 1991
- Eaton Corporation
- David J. Gritter
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
DETECTING WELDED RELAY CONTACTS USING MEASUREMENT AFTER CURRENT BREAK
- Publication number 20240426913
- Publication date Dec 26, 2024
- Rockwell Automation Technologies, Inc.
- David Elmiger
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DETECTING WELDED RELAY CONTACTS USING SPANNER VOLTAGE MEASUREMENT
- Publication number 20240426915
- Publication date Dec 26, 2024
- Rockwell Automation Technologies, Inc.
- David Elmiger
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DETECTING WELDED RELAY CONTACTS USING CONTACT CLOSE TIME MEASUREMENT
- Publication number 20240426914
- Publication date Dec 26, 2024
- Rockwell Automation Technologies, Inc.
- David Elmiger
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR DETECTING WELDED CONTACTS IN A SWITCH SYSTEM
- Publication number 20230343533
- Publication date Oct 26, 2023
- Rockwell Automation Technologies, Inc.
- David Elmiger
- G01 - MEASURING TESTING
Information Patent Application
SYSTEMS AND METHODS FOR DETECTING WELDED CONTACTS IN AN ELECTROMAGN...
- Publication number 20230101428
- Publication date Mar 30, 2023
- Rockwell Automation Technologies, Inc.
- Kyle B. Adkins
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Predicting Zero-Crossings For Point-On-Wave (POW) Switching Techniques
- Publication number 20230102770
- Publication date Mar 30, 2023
- Rockwell Automation Technologies, Inc.
- KYLE B. ADKINS
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RELAY CIRCUITRY WITH SELF REGULATING CHARGING
- Publication number 20220069819
- Publication date Mar 3, 2022
- Rockwell Automation Technologies, Inc.
- David W. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEMS AND METHODS FOR CONTROLLING CONTACTOR OPEN TIME
- Publication number 20210319967
- Publication date Oct 14, 2021
- Rockwell Automation Technologies, Inc.
- ANDREW E. CARLSON
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR DYNAMICALLY SWITCHING A LOAD OF A CURRENT T...
- Publication number 20200153227
- Publication date May 14, 2020
- Rockwell Automation Technologies, Inc.
- Andrew E. Carlson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
QUASI VARIABLE FREQUENCY MOTOR CONTROLLER
- Publication number 20150333663
- Publication date Nov 19, 2015
- Rockwell Automation Technologies, Inc.
- Kun Wei
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
QUASI VECTOR MOTOR CONTROLLER
- Publication number 20150333685
- Publication date Nov 19, 2015
- Rockwell Automation Technologies, Inc.
- Kun Wei
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR
- Publication number 20140285230
- Publication date Sep 25, 2014
- David M. Messersmith
- G01 - MEASURING TESTING
Information Patent Application
Motor Winding Heater Systems and Methods
- Publication number 20130271060
- Publication date Oct 17, 2013
- David Messersmith
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Control Method and System with Feedback Indicative of Load Flux
- Publication number 20120223668
- Publication date Sep 6, 2012
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method and Apparatus for Controlling Motor Torque
- Publication number 20110291596
- Publication date Dec 1, 2011
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR
- Publication number 20110102012
- Publication date May 5, 2011
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- G01 - MEASURING TESTING
Information Patent Application
Control method and system with feedback indicative of load flux
- Publication number 20090058341
- Publication date Mar 5, 2009
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control method and system
- Publication number 20090058351
- Publication date Mar 5, 2009
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching apparatus and method
- Publication number 20080094771
- Publication date Apr 24, 2008
- David M. Messersmith
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEM AND METHOD FOR TRANSIENT-BASED MOTOR SPEED ESTIMATION WITH T...
- Publication number 20070247099
- Publication date Oct 25, 2007
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Motor controller
- Publication number 20040051494
- Publication date Mar 18, 2004
- David Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

David M. Messersmith

Person

Patents Grantslast 30 patents

Systems and methods for detecting welded contacts in an electromagn...

Predicting zero-crossings for point-on-wave (POW) switching techniques

Systems and methods for controlling contactor open time

Relay circuitry with self regulating charging

Dual PWM relay driver with diagnostics for functional safety system

Systems and methods for dynamically switching a load of a current t...

Parameter estimation system and method for an induction motor

Quasi vector motor controller

Motor winding heater systems and methods

Quasi variable frequency motor controller

Parameter estimation system and method for an induction motor

Control method and system with feedback indicative of load flux

Method and apparatus for controlling motor torque

Control method and system with feedback indicative of load flux

Control method and system

Switching apparatus and method

System and method for transient-based motor speed estimation with t...

System and method for transient-based motor speed estimation with t...

Motor controller

Bumpless rotating start

DC braking of inverter-driven AC motors

Patents Applicationslast 30 patents

DETECTING WELDED RELAY CONTACTS USING MEASUREMENT AFTER CURRENT BREAK

DETECTING WELDED RELAY CONTACTS USING SPANNER VOLTAGE MEASUREMENT

DETECTING WELDED RELAY CONTACTS USING CONTACT CLOSE TIME MEASUREMENT

SYSTEMS AND METHODS FOR DETECTING WELDED CONTACTS IN A SWITCH SYSTEM

SYSTEMS AND METHODS FOR DETECTING WELDED CONTACTS IN AN ELECTROMAGN...

Predicting Zero-Crossings For Point-On-Wave (POW) Switching Techniques

RELAY CIRCUITRY WITH SELF REGULATING CHARGING

SYSTEMS AND METHODS FOR CONTROLLING CONTACTOR OPEN TIME

SYSTEMS AND METHODS FOR DYNAMICALLY SWITCHING A LOAD OF A CURRENT T...

QUASI VARIABLE FREQUENCY MOTOR CONTROLLER

QUASI VECTOR MOTOR CONTROLLER

PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR

Motor Winding Heater Systems and Methods

Control Method and System with Feedback Indicative of Load Flux

Method and Apparatus for Controlling Motor Torque

PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR

Control method and system with feedback indicative of load flux

Control method and system

Switching apparatus and method

SYSTEM AND METHOD FOR TRANSIENT-BASED MOTOR SPEED ESTIMATION WITH T...

Motor controller