Patents Represented by Attorney, Agent or Law Firm Keith M. Baxter
  • Patent number: 7373491
    Abstract: A processor architecture suitable for embedded systems and compatible with different kinds of external memory, executes a bootstrap program to determine the characteristics of the external memory before connection with the external memory. For this purpose, system storage structures such as cache, buffers, and registers are enlisted as temporary memory for the execution of the bootstrap program up to configuration of the external memory. External memory setup data may be obtained from a variety of sources including external flash memory or a network.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: May 13, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Joseph Francis Mann, John Robert Figie
  • Patent number: 7371986
    Abstract: A pushbutton provides an operator with a replaceable cam ring that converts the operating mode of the operator from push-pull to twist-to-release.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: May 13, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Elsa J. Varland, Darrell S. Filtz, Frank J. Graninger, Jie Ning
  • Patent number: 7366774
    Abstract: A high reliability network provides for measurements of network delays through pairs of transmissions of local clock values used in a first message to deduce clock value offsets and in a second message to reveal network delays.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: April 29, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Anthony Gerard Gibart, David A. Vasko, Paul G. Kucharski, Joseph A. Lenner, Edward C. Korsberg
  • Patent number: 7345474
    Abstract: A detector for magnetizable materials operates remotely to determine a amplitude and phase modification of an exciting magnetic field caused by the magnetizable materials. These amplitude and phase measurements are used to create a phase-amplitude trajectory in phase amplitude space, which may be finely divided to distinguish among a number of different types of components.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: March 18, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Jonathan R. Engdahl, Ira B. Goldberg
  • Patent number: 7342589
    Abstract: A system and method for managing graphical information are disclosed. The system includes a processing device, first and second memory portions within at least one memory device coupled to the processing device. The first memory portion stores a first plurality of files having a first type of information relating to graphical entities, and a second plurality of files having a second type of information relating to graphical entities, where each of the second plurality of files references at least one of the first plurality of files. The second memory portion duplicatively stores a first subset of the first plurality of files and a second subset of the second plurality of files, where each of the files of the first subset are referenced by at least one of the files of the second subset, and where the first and second subsets have information relating to a first project.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: March 11, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: Nathan P. Miserocchi
  • Patent number: 7342761
    Abstract: The application of electric power from a power source to a load is controlled by detecting the magnitude of electric current flowing to the load and producing a first signal level that is indicative of that magnitude. The first signal level is compared to a reference signal level which comparison produces an output signal. Either the first signal level or the reference signal level is altered in response to variation of voltage applied to the load. This results in the output signal indicating when electric power consumed by the load exceeds a threshold level. The flow of electric current from the power source to the load then is controlled in response to the output signal.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: March 11, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: Jack L. Covault
  • Patent number: 7339125
    Abstract: A safety switch operating mechanism having an engagement mechanism mechanically linked to a plunger and arranged to receive an actuator such that insertion of the actuator into the engagement mechanism moves the plunger to a first position and removal of the actuator from the engagement mechanism moves the plunger to a second position. The safety switch operating mechanism having a resilient member which engages with the plunger and resiliently resists movement of the plunger from the first position to the second position. The engagement of the resilient member with the plunger resists inadvertent removal of the actuator from the engagement mechanism.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: March 4, 2008
    Assignee: EJA Limited
    Inventor: Anthony Charles Barrington Day
  • Patent number: 7339948
    Abstract: A transmission schedule is overlaid on the Ethernet protocol to allow use of this readily available high speed protocol for transmission of I/O data communicated in an industrial control environment and requiring a high degree of determinism. Scheduling improves load leveling and bandwidth utilization and by producing a more consistent delay may be teamed with time synchronization to produce more accurate clock synchronization.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: March 4, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Sivaram Balasubramanian, Kendal R. Harris, Anatoly Moldovansky
  • Patent number: 7340574
    Abstract: A method for identifying memory modifications includes designating a first portion of a first memory as read-only. An abort condition is identified responsive to receiving a write instruction having a target address within the first portion. In response to the abort condition, a second portion of the first memory including at least the target address is flagged as being modified. The write instruction is executed.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: March 4, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Kenwood H. Hall, Ronald E. Schultz
  • Patent number: 7328370
    Abstract: A safety controller with redundant controllers, each executing safety tasks and comparing their results, provides an improved interface in which a user interacts with a single processor and the second processor is invisible. The interacting processor provides for the transmission of programs and variables to both processors when they are safety tasks and coordinates synchronization of the two programs and comparison of their operation all without additional user input.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: February 5, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Anthony Gerard Gibart, Paul G. Kucharski, Joseph Paul Izzo, Raymond Louis Buvel, Michael Dean Kalan, Charles Martin Rischar
  • Patent number: 7305272
    Abstract: A controller configured to operate as at least one agent, a method of configuring a controller for operation as part of a multi-agent distributed control system, and a configuration device for so configuring a controller, are disclosed. The controller includes at least one processing device and at least one storage medium that is in communication with the at least one processing device. The at least one storage medium stores a plurality of program portions that are executed by the at least one processing device, and the plurality of program portions includes first, second and third program portions. The first program portion is capable of generating first signals that are commands to be provided to a controlled device, the second program portion is capable of governing standard agent-type functionality, and the third program portion is capable of governing application-specific agent-type functionality.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: December 4, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Francisco P. Maturana, Kenwood H. Hall, Raymond J. Staron, Petr Slechta, Pavel Tichy, Sivaram Balasubramanian
  • Patent number: 7287184
    Abstract: A safety controller executes a control program in two processing units to detect processor failure by comparison of the execution in each unit. This comparison is made rapid by synchronizing the input variables at the beginning of the task and comparing output variables at a conclusion of the task, avoiding line-by-line comparison of input and output variables. Intermediate variables, that are neither input nor output values, are compared at a less frequent interval.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: October 23, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Anthony Gerard Gibart, Paul G. Kucharski, Joseph Paul Izzo, Michael Dean Kalan, Charles Martin Rischar
  • Patent number: 7266426
    Abstract: A control system capable of detecting an anomaly in a controlled distribution network, and related method of detecting an anomaly, are disclosed. The control system includes a plurality of autonomous control units associated with elements of a distribution network, which include at least one producer and at least one consumer interconnected by distribution lines and at least one switch. The control units execute a program, are in communication with each other, and are capable of sensing respective parameters of the elements with which they are associated. At least one of the control units is capable of determining an occurrence of an anomaly within the network by comparing sensed parameter values or values based thereupon with one or more thresholds or range limits, and at least one of the control units is capable of identifying a cause of the anomaly by switching the at least one switch and observing the parameters.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: September 4, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Francisco Paul Maturana, Kenwood Henry Hall, Raymond John Staron
  • Patent number: 7266000
    Abstract: An improved inrush current limiting circuit provides continuous control of current delivered to a filter capacitor based on the charge state of the filter capacitor.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: September 4, 2007
    Assignee: Rockwell Automation Technologies, Incl
    Inventor: Dale R. Terdan
  • Patent number: 7262522
    Abstract: A microelectromechanical system (MEMS) device is used to transfer power from a source generator to a power generator that delivers electrical power to a load, while maintaining electrical isolation between the source generator and power generator for size critical applications where transformers or coupling capacitors would not be practical, but where electrical isolation is desired.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: August 28, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Richard D. Harris, Patrick C. Herbert, Michael J. Knieser, Robert J. Kretschmann, Mark A. Lucak, Robert J. Pond, Louis F. Szabo, Frederick M. Discenzo
  • Patent number: 7236342
    Abstract: A passive isolator may fit between two serial network cables to convert a standard serial network to a serial network suitable for use in hazardous environments.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: June 26, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Joseph G. Vazach, Ulrich A. Behrens, Guenter Gabriel, Robert J. Kretschmann, Paraj Kayande, Robin David Slater
  • Patent number: 7228390
    Abstract: A safety controller provides for reliable mixed execution of standard and safety control programs held in a common memory by providing a hardware lock that is locked at times when the safety program is not executing to minimize potential corruption of the safety program by the standard program.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: June 5, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Charles Martin Rischar, Raymond Louis Buvel, Joseph Paul Izzo, Jeremy Stephen Vechinski
  • Patent number: 7228187
    Abstract: A system and method of interacting with a multi-agent distributed control system employing a plurality of controllers on which are programmed a plurality of agents in which the controllers are coupled by a network are disclosed. The method includes providing a computer program capable of operating a user interface, where the computer program is in communication with the agents via the network. The method further includes displaying agent-related information on the user interface by way of a plurality of windows, where within a first of the windows is further displayed a workflow among at least some of the agents, and within a second of the windows is further displayed at least one of a plurality of messages communicated among at least some of the agents, a work unit requested by at least one of the agents, and message content associated with at least one of the messages.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: June 5, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Pavel Tichý, Francisco P. Maturana, Kenwood H. Hall, Raymond J. Staron, Petr {hacek over (S)}lechta, Vladimír Ma{hacek over (r)}ík
  • Patent number: 7223927
    Abstract: A locking switch assembly includes a cam, a plunger, and a locking mechanism. The cam is rotatably attached to a frame assembly and an end of the plunger is constructed to follow a contour of the cam. The plunger is movable between a plunger first position and a plunger second position. A pin is biased against the plunger and movable between a pin first position and a pin second position and locks the plunger in the plunger second position when the pin is in the pin second position. A breakable arm prevents movement of the plunger from the plunger second position to the plunger first position unless a force above a selected amount is applied to the cam when the plunger is in the plunger second position.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 29, 2007
    Assignee: EJA Limited
    Inventor: Julian Poyner
  • Patent number: 7213168
    Abstract: A safety controller may execute both standard and safety programs using shared architecture in which two processors symmetrically execute the safety program and check each other for errors, and one processor only executes the standard program to minimize undetected symmetrical corruption of the safety programs.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: May 1, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Michael Dean Kalan, Charles Martin Rischar