Flexible housing for a transmission line in a hydrostatically pressurized environment

• US 4,972,048 A
• Filed: 06/06/1989
• Issued: 11/20/1990
• Est. Priority Date: 06/06/1988
• Status: Expired due to Fees

• Current Assignee: Gore Enterprise Holdings Incorporated
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Martin, James D. S.
• Primary Examiner(s): Askin, Laramie E.
• Application Number:
  US07/362,212
• Time in Patent Office: 532 Days
• Field of Search: 174/68.3, 174/111, 174/136, 174/167, 59/78.1, 138/110, 138/120, 138/155, 191/12 C
• US Class Current: 174/136
• CPC Class Codes: G02B 6/4461 Articulated
• CPC Class Codes: H02G 3/0475 formed by a succession of articulated units

Abstract

A flexible housing for use in protecting one or more transmission lines in a pressurized environment is provided comprising a conduit contained within a protective outer jacket. The conduit is constructed of a plurality of conduit segments, each segment having an opening therethrough, the segments being arranged in series and caused to abut adjacent segments in such a way that the opening through each segment is in communication with the openings through each of the adjacent segments so as to provide a passage to contain a transmission line. Each segment is flexibly linked to its adjacent segments by coupling means.

Claims

1. A flexible housing for use in protecting a transmission line in a pressurized environment comprising a conduit contained within a protective outer jacket, the conduit being constructed of a plurality of conduit segments, each conduit segment having an opening therethrough, the segments being arranged in series and caused to abut adjacent segments in such a way that the opening through each segment is in communication with the openings through each of said adjacent segments so as to provide a passage to contain a transmission line, each segment being flexibly linked to its adjacent segments by coupling means, wherein the abutting surface of one conduit segment is provided with guide surfaces and the surface of an adjacent conduit segment abutting thereagainst is provided with means cooperating with said guide surfaces to prevent relative lateral movement between the segments.

2. A flexible housing in accordance with claim 1 wherein the coupling means comprises a pair of flexible ligaments running throughout the length of the conduit and passing through each conduit segment in turn.

3. A flexible housing in accordance with claim 2 wherein the pair of flexible ligaments comprising the coupling means pass through each conduit segment defining a plane that does not contain the through axis of the opening in said conduit segment so that a tension generated by the pair of ligaments acts at a distance away from said through axis.

4. A flexible housing in accordance with claim 2 wherein the flexible ligaments are tensioned to approximately 133 Newtons (30 lbs. force).

5. A flexible housing in accordance with claim 1 wherein the abutment of adjacent conduit segments in such that a convex arcuate surface of one segment is received by a concave arcuate surface of an adjacent segment of corresponding curvature.

6. A flexible housing in accordance with claim 5 wherein the plurality of segments which comprise the conduit are of two different configurations, the configurations alternating along the length of the flexible housing, the first segment configuration being a segment of biconcave cross-section and the second segment configuration being of circular cross-section, the cross-sectional radius of curvature of the second configuration being substantially equal to the cross-sectional radius of curvature of the first configuration so that the second configuration may be received thereby.

7. A flexible housing in accordance with claim 1 wherein said protective outer jacket is of extruded polyurethane.

8. A flexible housing in accordance with claim 1 wherein the guide surfaces are 45°

radial abutments and the means cooperating therewith are 45°

radial chamfers.

9. A flexible housing in accordance with claim 1 wherein the opening through each conduit segment is flared at opposite ends.

10. A flexible housing in accordance with claim 1 wherein an inner sleeve is provided between the plurality of conduit segments and said protective outer jacket to prevent the adhesion of the jacket to the conduit segments.

11. A flexible housing in accordance with claim 10 wherein the conduit is provided with a nylon strip to prevent the pinching of the inner sleeve between abutting surfaces during any relative movement of adjacent conduit segments.