Patents by Inventor Chad J. Bohl

Chad J. Bohl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method of communicating safety data over high availability industrial control systems
    Patent number: 11927950
    Abstract: A system for communicating between redundant devices balances the desired attributes of a high availability (HA) control system and a safety control system. The system includes concurrent connections as a fault tolerant mechanism for industrial protocol connections at the transport layer. The concurrent connections establish multiple paths for redundancy from a data producer to a data consumer. Concurrent connections increase availability of the HA control and safety instrumented systems. More specifically, concurrent connections and architectural redundancies eliminate a single point of failure within the control system and further reduce safety connection timeouts during fault detection and/or recovery. Concurrent connections may be used to keep a HA system operational or to provide detection of a failure in a safety system. The industrial control network may be configured to function as a HA control system, as a safety control system, or with certain degrees of both HA and safety-related operation.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: March 12, 2024
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Nicholas L. Stay, Anthony G. Gibart, Mark A. Flood, Chandresh R. Chaudhari, Chad J. Bohl, Sivaram Balasubramanian
  • System And Method Of Communicating Safety Data Over High Availability Industrial Control Systems
    Publication number: 20220050451
    Abstract: A system for communicating between redundant devices balances the desired attributes of a high availability (HA) control system and a safety control system. The system includes concurrent connections as a fault tolerant mechanism for industrial protocol connections at the transport layer. The concurrent connections establish multiple paths for redundancy from a data producer to a data consumer. Concurrent connections increase availability of the HA control and safety instrumented systems. More specifically, concurrent connections and architectural redundancies eliminate a single point of failure within the control system and further reduce safety connection timeouts during fault detection and/or recovery. Concurrent connections may be used to keep a HA system operational or to provide detection of a failure in a safety system. The industrial control network may be configured to function as a HA control system, as a safety control system, or with certain degrees of both HA and safety-related operation.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Nicholas L. Stay, Anthony G. Gibart, Mark A. Flood, Chandresh R. Chaudhari, Chad J. Bohl, Sivaram Balasubramanian