Fire protective hose assembly
AssigneeParker-Hannifin Corporation
InventorsNagarajan Ramaswamy, Peter J Stroempl, Allen G. Hoube
Life of this patent
Estimating the term…
Abstract
A flexible hose for conveying fluids and suitable for high temperature environments, in one embodiment the hose assembly comprises a thermal paint coated nipple, a core tube, a thermal insulating layer surrounding the core tube, a cover layer surrounding the thermal insulating layer, and a vented jacket surrounding the cover layer. The thermal insulating layer may be a fibrous material such as a silica fiber. The cover layer may be thermally stable up to 750° F. or higher. The vented jacket may be a wire braid having interstices therein and formed from a corrosion resistant material.
Claims18
A hose assembly comprising:
- a core tube;
- an insulating layer surrounding the core tube;
- a vented anti-chafing jacket surrounding the insulating layer;
- and
- a chemical resistant polyimide layer interposed between the insulating layer and the vented anti-chafing jacket;
- wherein the vented anti-chafing jacket is the outermost layer of the hose;
- and
- wherein the insulating layer is non-ablative at least when the hose is subjected to a fire at 2000° F. for a period of 15 minutes.
A hose assembly comprising:
- a core tube;
- an insulating layer surrounding the core tube;
- and
- a vented anti-chafing jacket surrounding the insulating layer, the vented anti-chafing jacket comprises a corrosion resistant material chosen from a stainless steel, a nickel alloy, or combinations thereof;
- anti-chafing jacket is the outermost layer of the hose;
- and
- wherein the insulating layer is non-ablative at least when the hose is subjected to a fire at 2000° F. for a period of 15 minutes.
A hose assembly comprising:
- a PTFE tube;
- a reinforcing layer surrounding the PTFE tube;
- an insulation layer comprising silica fiber, the insulation layer surrounding the reinforcing layer;
- a cover layer comprising a polyimide film, the cover layer surrounding the insulation layer;
- and
- a corrosion resistant braid positioned about the polyimide layer and forming an outer layer of the hose.
A hose assembly comprising:
- a core tube;
- a fitting attached to each end of the core tube, wherein an exterior surface of a nipple portion of each fitting is coated with a thermal paint and inserted into the core tube.
Dependencies are inferred from the claim text.