Patent ID: 8171613
Filing Date: 2012-05-08
Classification: F16B,F16L,Y10S,Y10T

Abstract:
1. A method of designing an electrically-insulative threaded connection, comprising: designing an insulating composite layer comprised of an insulating fiber and an insulating resin, wherein the insulating composite layer has a selected dielectric strength when cured; designing a wedge thread connection with a selected gap between male and female thread surfaces at a selected makeup, such that the selected gap has a desired dielectric strength when the insulating composite layer is disposed in the gap; forming a pin member having the male thread surface and a box member having the female thread surface; applying the insulating composite layer to at least one of the male thread surface and the female thread surface; arranging the insulating fiber substantially parallel to at least one of a flank, a root, and a crest of the wedge thread surfaces; and making up the pin member and the box member such that the selected gap is formed between the male and female thread surfaces.