Invention Grant
- Patent Title: Thick walled composite tubular and method of making
- Patent Title (中): 厚壁复合管及其制作方法
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Application No.: US12904316Application Date: 2010-10-14
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Publication No.: US08679606B2Publication Date: 2014-03-25
- Inventor: Karl A. Parfrey
- Applicant: Karl A. Parfrey
- Applicant Address: US TX Houston
- Assignee: Vetco Gray Inc.
- Current Assignee: Vetco Gray Inc.
- Current Assignee Address: US TX Houston
- Agency: Bracewell & Giuliani LLP
- Main IPC: B29C70/08
- IPC: B29C70/08 ; B29D22/00

Abstract:
A method and apparatus for forming a tubular from a composite material. The composite material includes fibers and epoxy resin that are formed into plies that are wound around an axis to form an annular member. The fibers in each ply are arranged axially and hoopwise. The axially oriented fibers are angled from about 10° up to about 20° with respect to an axis of the tubular. The hoopwise fibers are wound in the plies ranging from about 60° at the innermost ply up to about 90° in the outermost ply. The hoop fibers in the intermediate plies are arranged at increasing angles with distance away from the innermost layer. Transitioning the hoop fiber alignment in the successive plies better distributes hoop stress through the wall of the tubular thereby reducing stress concentrations on the innermost ply.
Public/Granted literature
- US20120094041A1 THICK WALLED COMPOSITE TUBULAR AND METHOD OF MAKING Public/Granted day:2012-04-19
Information query
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