Patents by Inventor Richard Edward Schnell

Richard Edward Schnell 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).

  • Redundant valve system
    Patent number: 7089957
    Abstract: The redundant valve system 10 of the preferred embodiment includes a first valve unit 12 and a second valve unit 14. The redundant valve system 10 is preferably used to connect a source 16 to a destination 18 and to connect the destination 18 to a reservoir 20. The first valve unit 12 and the second valve unit 14 are coupled to control fluid flow such that fluid flow is allowed in only one of two given directions at any given time, either from the source 16 to the destination 18 or from the destination 18 to the reservoir 20.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: August 15, 2006
    Assignee: Ross Operating Valve Co.
    Inventor: Richard Edward Schnell