Patents by Inventor Francis C. Roessler

Francis C. Roessler 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).

  • Vent assembly and method for a digital valve positioner
    Patent number: 10228066
    Abstract: A digital valve positioner for use with an actuator. The digital valve positioner includes a housing, at least one exhaust port opening formed in the housing, and a vent assembly operatively coupled to the at least one exhaust port opening. The vent assembly includes a body having a bore, a valve seat surrounding the bore, and a check valve disposed within the bore. The check valve is arranged to shift from a closed position seated against the valve seat to an open position disposed away from the valve seat. A plurality of barriers is disposed around and positioned to enclose the check valve. The plurality of barriers is arranged to prevent an external medium from entering the check valve and to provide a tortuous flow path for the exhaust medium reducing sound through the vent assembly.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 12, 2019
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Richard J. Winkler, Kenneth W. Junk, Shannon E. Jelken, Francis C. Roessler, Christopher J. Mack
  • VENT ASSEMBLY AND METHOD FOR A DIGITAL VALVE POSITIONER
    Publication number: 20180283567
    Abstract: A digital valve positioner for use with an actuator. The digital valve positioner includes a housing, at least one exhaust port opening formed in the housing, and a vent assembly operatively coupled to the at least one exhaust port opening. The vent assembly includes a body having a bore, a valve seat surrounding the bore, and a check valve disposed within the bore. The check valve is arranged to shift from a closed position seated against the valve seat to an open position disposed away from the valve seat. A plurality of barriers is disposed around and positioned to enclose the check valve. The plurality of barriers is arranged to prevent an external medium from entering the check valve and to provide a tortuous flow path for the exhaust medium reducing sound through the vent assembly.
    Type: Application
    Filed: June 4, 2018
    Publication date: October 4, 2018
    Inventors: Richard J. Winkler, Kenneth W. Junk, Shannon E. Jelken, Francis C. Roessler, Christopher J. Mack
  • Vent assembly and method for a digital valve positioner
    Patent number: 9989159
    Abstract: A digital valve positioner for use with an actuator. The digital valve positioner includes a housing, at least one exhaust port opening formed in the housing, and a vent assembly operatively coupled to the at least one exhaust port opening. The vent assembly includes a body having a bore, a valve seat surrounding the bore, and a check valve disposed within the bore. The check valve is arranged to shift from a closed position seated against the valve seat to an open position disposed away from the valve seat. A plurality of barriers is disposed around and positioned to enclose the check valve. The plurality of barriers is arranged to prevent an external medium from entering the check valve and to provide a tortuous flow path for the exhaust medium reducing sound through the vent assembly.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 5, 2018
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Richard J. Winkler, Kenneth W. Junk, Shannon E. Jelken, Francis C. Roessler, Christopher J. Mack
  • VENT ASSEMBLY AND METHOD FOR A DIGITAL VALVE POSITIONER
    Publication number: 20150316158
    Abstract: A digital valve positioner for use with an actuator. The digital valve positioner includes a housing, at least one exhaust port opening formed in the housing, and a vent assembly operatively coupled to the at least one exhaust port opening. The vent assembly includes a body having a bore, a valve seat surrounding the bore, and a check valve disposed within the bore. The check valve is arranged to shift from a closed position seated against the valve seat to an open position disposed away from the valve seat. A plurality of barriers is disposed around and positioned to enclose the check valve. The plurality of barriers is arranged to prevent an external medium from entering the check valve and to provide a tortuous flow path for the exhaust medium reducing sound through the vent assembly.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 5, 2015
    Applicant: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Richard J. Winkler, Kenneth W. Junk, Shannon E. Jelken, Francis C. Roessler, Christopher J. Mack