The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2012
Filed:
Dec. 07, 2007
Harris A. Reynolds, Jr., Houston, TX (US);
Harris A. Reynolds, Jr., Houston, TX (US);
Hydril Company, Houston, TX (US);
Abstract
An electrically-insulative threaded connection includes a pin member having a pin thread and a box member having a box thread. An insulating composite layer is disposed between the pin thread and the box thread. The insulating composite layer includes an insulating fiber and insulating resin. The pin thread and the box thread are wedge threads. A method of making an electrically-insulative threaded connection includes forming a pin wedge thread on a pin member and winding a filament over the pin wedge thread. The filament is wetted with a resin, thereby forming a composite layer. The composite layer is cured and machined to mate with a box wedge thread.