US2009120150A1PendingUtilityA1

Controllable Fluids in Pipe Bending

34
Assignee: BISHOP TIMOTHYPriority: Dec 22, 2004Filed: Dec 22, 2005Published: May 14, 2009
Est. expiryDec 22, 2024(expired)· nominal 20-yr term from priority
Inventors:Timothy Bishop
B21D 9/15
34
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Claims

Abstract

A method for shaping partially enclosed structures such as pipes, the method comprising: filling the structure with ERF, applying an electrical field to the ERF to increase its viscosity, shaping the structure, removing the field and removing the ERF from the structure.

Claims

exact text as granted — not AI-modified
1 . A method for shaping a partially enclosed structure, the method comprising the steps of:
 filling the structure with ERF,   applying an electrical field to the ERF to increase its viscosity,   shaping the structure,   removing the field and   removing the ERF from the structure.   
   
   
       2 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the structure is an electrically insulating material and the field is applied from electrodes at one end of the structure to the other. 
   
   
       3 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the structure is electrically conductive and the field is applied from a conductor in the interior of the structure to the structure itself. 
   
   
       4 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the ERF comprises a dielectric. 
   
   
       5 . The method for shaping a partially enclosed structure according to  claim 4 , in which the liquid is wherein the dielectric is an oil. 
   
   
       6 . The method for shaping a partially enclosed structure according to  claim 1 , wherein additives are included in the ERF to improve the performance of a liquid in the ERF. 
   
   
       7 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the ERF comprises particles based on a material selected from the group consisting of silica, zeolites, gum Arabic, formaldehyde polymer, active carbon, poly(acenequinone) radical (PAQR) polymers, polyeurethane polymers and surface treated carbon. 
   
   
       8 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the ERF has a low viscosity when particles in the ERF are free to flow. 
   
   
       9 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the ERF becomes substantially rigid when the electrical field is imposed by a power supply. 
   
   
       10 . (canceled) 
   
   
       11 . The method for shaping a partially enclosed structure according to  claim 1 , wherein the structure is a pipe.

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