Patents by Inventor Jyri HAKOLA

Jyri HAKOLA 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).

  • Fluid valve assembly, process valve positioner and use of a fluid valve assembly in control of a process valve
    Patent number: 10968924
    Abstract: A fluid valve assembly having a central bore and a stem axially-movable within the central bore and actuated by an axial pilot force and an axial counter force. An inner supply pressure chamber is provided to retain a stabilized supply pressure providing the axial counter force affecting on the stem. A seal member is arranged coaxially with the stem between the inner supply pressure chamber and an outer supply pressure chamber which is connected to a supply pressure input line. A metering edge is arranged coaxially with the stem to control fluid flow from the outer supply pressure chamber to an actuator chamber. Means are provided to stabilize the supply pressure in the inner chamber against sudden pressure drops in the outer supply pressure chamber.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 6, 2021
    Assignee: NELES FINLAND OY
    Inventors: Jan Gunell, Mika Olkkonen, Juuso Jokinen, Joni Kukkonen, Jyri Hakola
  • FLUID VALVE ASSEMBLY, PROCESS VALVE POSITIONER AND USE OF A FLUID VALVE ASSEMBLY IN CONTROL OF A PROCESS VALVE
    Publication number: 20190271334
    Abstract: A fluid valve assembly having a central bore and a stem axially-movable within the central bore and actuated by an axial pilot force and an axial counter force. An inner supply pressure chamber is provided to retain a stabilized supply pressure providing the axial counter force affecting on the stem. A seal member is arranged coaxially with the stem between the inner supply pressure chamber and an outer supply pressure chamber which is connected to a supply pressure input line. A metering edge is arranged coaxially with the stem to control fluid flow from the outer supply pressure chamber to an actuator chamber. Means are provided to stabilize the supply pressure in the inner chamber against sudden pressure drops in the outer supply pressure chamber.
    Type: Application
    Filed: March 29, 2017
    Publication date: September 5, 2019
    Applicant: METSO FLOW CONTROL OY
    Inventors: Jan GUNELL, Mika OLKKONEN, Juuso JOKINEN, Joni KUKKONEN, Jyri HAKOLA