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An Anti-Kink Insert Disclosure Number: IPCOM000194897D
Publication Date: 2010-Apr-13
Document File: 2 page(s) / 93K

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The Prior Art Database


This disclosure relates to support for flexible tubes for transfer of fluids, in particular air. When routing tubes in an environment where it may be subjected to external pressure, bending etc, it is a problem that the tube may kink or collapse due to said pressure or bending, thus restricting the air‐flow through the tube. Such environments exist, for instance, in vehicle seats. If such seat includes fluid tubing for the purpose of, for instance, controlling air cells of lumbar support or massage systems, there is a need for the design disclosed in this disclosure.

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The Design  This disclosure relates to support for flexible tubes for transfer of fluids, in particular air. When  routing tubes in an environment where it may be subjected to external pressure, bending etc, it  is a problem that the tube may kink or collapse due to said pressure or bending, thus restricting  the air‐flow through the tube. Such environments exist, for instance, in vehicle seats. If such  seat includes fluid tubing for the purpose of, for instance, controlling air cells of lumbar support  or massage systems, there is a need for the design disclosed in this disclosure. 

The design described below aims at solving this problem.  

Specifically, it provides  
(a) a flexible plastic insert for insertion into the tubing at areas which are, or may be in risk of  being, subjected to said pressure or bending, kinked or collapsed said insert  
(b) being extruded in a single piece and comprises; 
(c) at least three ribs which extends radially from and along the axial direction of the insert,  
(d) said ribs are spaced from each other at approx 120°, or in layman's terms, forms a  "Mercedes‐logo" in cross‐section. 
                First preferred embodiment  In a preferred embodiment the insert further comprises;   (e1) a retaining section on one or more of the ribs, the retaining section being a continuation of  said ribs and the insert with the retaining section having a greater with and/or diameter than  said tube,  
(e2) said section having a thickness reducing from the rib and out. 
  The retaining section is intended to collapse upon insertion into a tube and thus, by means of its  resilience, retain the insert in its position relative the tube. Thus, the pr...