Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kenneth M. Madden0
Date of Patent
February 2, 2010
0Patent Application Number
117047640
Date Filed
February 9, 2007
0Patent Primary Examiner
Patent 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.
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