Rotationally-actuated flapper valve and method

Abstract

A method for actuating a flapper of a valve includes rotating one component of the valve relative to another component of the valve. The rotating causing misaligning if aligned or aligning if misaligned a nonplanar surface on one of the flapper or another component of the valve relative to the other of the flapper or the another component of the valve. Encouraging the flapper to another position pursuant to the rotating. Also included is a method for rotationally actuating a flapper valve.

1 . A method for actuating a flapper of a valve comprising:
 rotating one component of the valve relative to another component of the valve, the rotating causing misaligning if aligned or aligning if misaligned a nonplanar surface on one of the flapper or another component of the valve relative to the other of the flapper or the another component of the valve; and   encouraging the flapper to another position pursuant to the rotating.   
     
     
         2 . A method as claimed in  claim 1  wherein the method further includes axial movement of the component. 
     
     
         3 . A method as claimed in  claim 2  wherein rotating and axial movement occur simultaneously. 
     
     
         4 . A method for rotationally actuating a flapper valve comprising:
 rotating one of a flapper or another component of the valve, the flapper having a sinuous edge perimetrically about the flapper and the another component having a congruous sinuous edge, the congruous sinuous edge and the sinuous edge being nested with one another when the flapper is closed, the rotating causing a change in alignment of the sinuous edge and congruous sinuous edge whereby at least one of the sinuous edge and the congruous sinuous edge interferes with the other of the sinuous edge and the congruous edge to directly cause opening or closing of the flapper.   
     
     
         5 . A method as claimed in  claim 4  wherein the method further includes axial movement of the another component. 
     
     
         6 . A method as claimed in  claim 5  wherein rotating and axial movement occur simultaneously.