Diverter cover assembly and methods of use

Abstract

A diverter cover assembly includes a first arrangement of sliding plates positioned above a central bore of a diverter and movable in substantially opposite directions to open and close over the central bore.

What is claimed is: 
     
         1 . A diverter cover assembly, comprising:
 a first arrangement of sliding plates positioned above a central bore of a diverter and movable in substantially opposite directions to open and close over the central bore.   
     
     
         2 . The diverter cover assembly of  claim 1 , further comprising a second arrangement of sliding plates positioned above the first arrangement of sliding plates and movable in substantially opposite directions to open and close over the central bore. 
     
     
         3 . The diverter cover assembly of  claim 2 , further comprising one or more hydraulic cylinders to move the first and second arrangements of sliding plates. 
     
     
         4 . The diverter cover assembly of  claim 2 , further comprising one or more pneumatic cylinders to move the first and second arrangements of sliding plates. 
     
     
         5 . The diverter cover assembly of  claim 2 , further comprising one or more electric motors to move the first and second arrangements of sliding plates. 
     
     
         6 . The diverter cover assembly of  claim 2 , wherein a sliding axis of the first arrangement of sliding plates is rotated relative to a sliding axis of the second arrangement of sliding plates. 
     
     
         7 . The diverter cover assembly of  claim 1 , further comprising an adaptor plate configured to be attached on top of the diverter and onto which the diverter cover assembly is fastened. 
     
     
         8 . The diverter cover assembly of  claim 1 , wherein the first arrangement of sliding plates is retrofitted on a diverter. 
     
     
         9 . A method of using a diverter cover assembly, the method comprising:
 providing a diverter cover assembly having a first arrangement of sliding plates positioned above a central bore of a diverter and movable in substantially opposite directions; and   moving the first arrangement of sliding plates and closing the central bore of the diverter.   
     
     
         10 . The method of  claim 9 , further comprising providing a second arrangement of sliding plates positioned above the first arrangement of sliding plates. 
     
     
         11 . The method of  claim 10 , further comprising moving the first and second arrangements of sliding plates with hydraulic cylinders attached thereto. 
     
     
         12 . The method of  claim 10 , further comprising moving the first and second arrangements of sliding plates with pneumatic cylinders attached thereto. 
     
     
         13 . The method of  claim 10 , further comprising moving the first and second arrangements of sliding plates with electric motors attached thereto. 
     
     
         14 . The method of  claim 10 , wherein a sliding axis of the first arrangement of sliding plates is rotated relative to a sliding axis of the second arrangement of sliding plates.