Patents by Inventor Bryan J. Quinn

Bryan J. Quinn 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 assisted spring return for pilot operated, spool valve
    Patent number: 4649957
    Abstract: An improved pilot operated, spool valve includes a valve body with a spool that translates axially in a throughbore in the valve body. The spool is moved in response to air pressure in a first direction and is moved in the opposite direction by a combination of a mechanical biasing force and fluid pressure.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: March 17, 1987
    Assignee: The Aro Corporation
    Inventor: Bryan J. Quinn