Patents by Inventor Nelson R. Timm

Nelson R. Timm 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).

  • Patent number: 7513270
    Abstract: A safety relief valve provides for the equalization of backpressure across a valve spindle by providing for flow of fluid between equal sized upper and lower surfaces of the spindle in order to render the valve set point independent of backpressure, such that opening characteristics are controlled solely by the setting of the valve control spring. A seal preferably formed of TEFLONĀ® is provided to prevent the escape of fluid from the valve body, which would otherwise adversely affect the pressure balance between the upper and lower surfaces.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: April 7, 2009
    Assignee: Flow-Safe, Inc.
    Inventors: Kevin P. Martin, Nelson R. Timm