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A Water-Carrying Stainless Steel Corrugated Hose with Low-Bulk Welded Termination

IP.com Disclosure Number: IPCOM000239635D
Publication Date: 2014-Nov-20
Document File: 2 page(s) / 105K

Publishing Venue

The IP.com Prior Art Database

Abstract

A water-carrying stainless steel corrugated hose with low-bulk welded termination is disclosed.

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A Water-Carrying Stainless Steel Corrugated Hose with Low-Bulk Welded Termination

Generally, stainless steel corrugated hoses are covered with steel-wire braid and

designed for high pressure applications. The hose terminations are brazed or welded. The welded joints are reliable and brazed joints are prone to cleave apart. The hose terminations are bulky to provide strain relief. The bulk of the termination and the steel-wire braid over the stainless steel corrugated hoses make them too expensive and

unsuitable for low pressure applications.

Disclosed is a water-carrying stainless steel corrugated hose with low-bulk welded termination and without the steel-wire braid over the hose. The curvature of the stainless-steel termination fitting provides the strain relief to the corrugated hose. In Figures 1 and 2, the welding is done on the outside which results in a crevice between the hose and the fitting. Crevices on the water carrying side should be avoided because they make the assembly more prone to localized corrosion. In another embodiment shown in Figure 3, the crevice on the water side is avoided by welding on the inside. Precision tungsten inert gas (TIG) welding is employed to reduce the termination bulk.

In an embodiment, the corrugated hose is cut at a high diameter and butted to a stainless steel fitting, as illustrated in Fig. 1.

Figure 1

As illustrated in Fig. 1, the stainless steel fitting has a curvature to support the hose and a ridge for welding th...