Patents by Inventor Kenneth M. Madden

Kenneth M. Madden 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).

  • Power actuated valve
    Patent number: 7654504
    Abstract: An improved power actuated valve, particularly a ball valve, which can be manually opened or closed quickly, in the event of failure of power operation, by manual turning force applied directly to the control stem of the valve without the necessity to overcome any drag or negative torque imposed by the power operating mechanism and speed reducing transmission.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: February 2, 2010
    Assignee: Parker & Harper Companies, Inc.
    Inventor: Kenneth M. Madden