Patents by Inventor Riyaz Ali

Riyaz Ali 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).

  • Flameproof Apparatus Using Non-Grounded Energy-Limiting Barrier
    Publication number: 20070183108
    Abstract: A device intended to meet flameproof approval requirements is configured to have two compartments separated by an energy-limiting barrier. The first compartment of the device houses the wiring terminations that bear ignition-capable energy and, therefore, must be flameproof. The energy-limiting barrier is configured to limit the energy that can reach the second compartment to a level that is not ignition capable. This allows the second compartment to be safe without meeting the flameproof requirements, and allows user-interface elements such as switches and indicators to be designed in a more cost-effective manner.
    Type: Application
    Filed: January 24, 2007
    Publication date: August 9, 2007
    Applicant: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Ronald Uhlenberg, Stephen Seberger, Riyaz Ali, Jimmie Snowbarger, Clyde Eisenbeis
  • On-line device testing block integrated into a process control/safety system
    Patent number: 6898542
    Abstract: A process control or safety system within a process plant uses one or more testing blocks to effect the timely and safe operation of on-line testing routines within field devices, such as valves, used in the process control or safety system. These testing blocks, which are easy to implement and to place in the process control or safety system, enable the periodic or on-demand testing of field devices to be integrated into the normal and on-going operation of the process control or safety system without causing scheduling or connection problems and without the need to rely on maintenance or other personnel, thereby providing better monitoring of the operational status of the field devices used within the process control and safety systems.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: May 24, 2005
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Riyaz Ali, Mark Nixon, Tim Forsythe
  • On-line device testing block integrated into a process control/safety system
    Publication number: 20040199351
    Abstract: A process control or safety system within a process plant uses one or more testing blocks to effect the timely and safe operation of on-line testing routines within field devices, such as valves, used in the process control or safety system. These testing blocks, which are easy to implement and to place in the process control or safety system, enable the periodic or on-demand testing of field devices to be integrated into the normal and on-going operation of the process control or safety system without causing scheduling or connection problems and without the need to rely on maintenance or other personnel, thereby providing better monitoring of the operational status of the field devices used within the process control and safety systems.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 7, 2004
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Riyaz Ali, Mark Nixon, Tim Forsythe