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.

Date of Patent:
Feb. 08, 1994

Filed:

Dec. 09, 1991
Applicant:
Inventors:

Alex Sas-Jaworsky, Houston, TX (US);

Jerry G Williams, Ponca City, OK (US);

Assignee:

Conoco Inc., Ponca City, OK (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
174 47 ; 138115 ; 138130 ; 138144 ; 138174 ;
Abstract

A composite tubular member having an outer cylindrical member containing fibers oriented to resist internal pressure while providing low bending stiffness, an inner smaller centrally located core member located near the neutral axis of the composite tubular member and containing fibers oriented to provide high axial stiffness, high tensile strength and low bending stiffness. One or more web members contain fibers oriented to resist shear stress, and connect the outer cylindrical member and the inner core member to form at least two separate cells within the composite tubular member. The web member forms a major and minor moment of inertia within the tubular member to create a preferred bending direction. Conductors are formed integral to the connecting web member for transmitting energy signals through the tubular member.


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