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Patent EP0385168A2 successfully refreshed from Google Patents.
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EP0385168A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Improved flexible conduit structure

Assignee: A Dec Inc
•
Filing: 1990-02-12
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Granted: —
•
Expires: 2010-02-12
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Abstract

Abstract An extruded conduit structure (10) is provided comprising a cluster of at least three tubes (12, 14, 16, 18) connected by webs (24, 34, 36, 38) extending between adjacent pairs, the tubes (12, 14, 16) and webs (24, 34, 36, 38) being formed by simultaneous extrusion of a suitable plastic through a suitable die. The outer surface (26) of each of the webs (24, 34, 36, 38) is convexly curved in an arc that is substantially tangential with the outer surfaces of the adjacent pair of tubes (12, 14, 16). The inner surface (28) of each of the webs (24, 34, 36, 38) is flat relative ot the outer surface (26) and forms a cord of such arc whereby each of the webs (24, 34, 36, 38) will be of minimum thickness (T₁) along each of its junctures with the adjacent webs (24, 34, 36, 38). This construction substantially eliminates any concave surfaces on the exterior of the conduit (10) within which foreign matter may collect and the webs (24, 34, 36, 38) can be easily stripped along the tubes (12, 14, 16) to expose the tube ends for connection to the apparatus to which they are to be connected.

Inventors

  • 👤 Pierre Laplante

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 20:00
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/18; F16L9/19; F16L11/00; F16L11/22; A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0034; A61M2025/004

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 93 words
An extruded conduit structure for conveying a plurality of fluids, comprising flexible tubular wall means defining a plurality of at least three spaced apart parallel tubes (12, 14, 16, 18) arranged in a cluster and a plurality of webs (24, 34, 36, 38) extending one between each adjacent pair of said tubes and merging with the wall means of such tubes, characterised in that the outer surface (26) of each of said webs (24, 34, 36, 38) is convexly curved between its junctures with an adjacent pair of the tubes (12, 14,16, 18).
Claim 2
Dependent Claim 93 words
An extruded conduit structure for conveying a plurality of fluids, comprising flexible tubular wall means defining a plurality of at least three spaced apart parallel tubes (12, 14, 16, 18) arranged in a cluster and a plurality of webs (24, 34, 36, 38) extending one between each adjacent pair of said tubes and merging with the wall means of such tubes, characterised in that the outer surface (26) of each of said webs (24, 34, 36, 38) is convexly curved between its junctures with an adjacent pair of the tubes (12, 14,16, 18).
Claim 3
Dependent Claim 40 words
A conduit structure according to claim 1, wherein each of said webs (24, 34, 36, 38) is of maximum thickness substantially at its midpoint and minimum thickness at its juncture with each of the adjacent tubes (12, 14, 16, 18).
Claim 4
Dependent Claim 64 words
A conduit structure according to claim 1, wherein the outer surface (26) of each of said webs (24, 34, 36, 38) is convexly curved such that its intersection with a plane perpendicular to the axis (22) of said conduit structure defines an arc tangential with the outer surfaces of the adjacent pair of the tubes (12, 14, 16, 18) with which such web connects.
Claim 5
Dependent Claim 51 words
A conduit structure according to claim 3, wherein the inner surface (28) of each of said webs (24, 34, 36, 38) intersects such plane along a chord of such arc and the line of intersection is substantially perpendicular to a radius of such arc intersecting such web subs­tantially at its midpoint.
Claim 6
Dependent Claim 11 words
A conduit structure according to any preceding claim comprising three tubes.
Claim 7
Dependent Claim 15 words
A conduit structure according to any one of claims 1 to 4 comprising four tubes.

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