Fire resistant flexible hose
AssigneeAflex Hose Limited
InventorJeremy Hudson
Life of this patent
Estimating the term…
Abstract
A flexible fire resistant hose assembly having a multilayer structure in which a radially inner fluoroplastic liner tube comprises a convolution or groove at an external facing surface. The inner liner tube is surrounded by a plurality of thermally insulating layers and a braided or woven reinforcement layer. Such layers are then encapsulated by at least one radially rubber cover layer. A hose assembly end fitting arrangement is also provided in which an end fitting is crimped to a hose end via a two component end fitting and a portion of the end fitting is surrounded by rubber.
Claims24
A flexible hose assembly comprising:
- a fluoropolymer inner liner tube having radially internal and external facing surfaces;
- at least one groove recessed in the liner tube at the external facing surface, the at least one groove extending along a length of the liner tube, the internal facing surface being substantially smooth relative to the external facing surface;
- at least one first woven or braided thermally insulating layer in contact with and provided over the liner tube;
- at least one reinforcement layer in contact with and provided over the first thermally insulating layer;
- at least one second woven or braided thermally insulating layer in contact with and provided over the reinforcement layer;
- and
- at least one rubber cover layer in contact with and provided over the second thermally insulating layer.
A method of manufacturing a hose assembly comprising:
- providing a fluoropolymer inner liner tube having at least one groove recessed in the liner tube at the external facing surface, the at least one groove extending axially along a length of the liner tube;
- covering the inner liner tube with at least one first thermally insulating layer;
- covering the first thermally insulating layer with at least one reinforcement layer;
- covering the reinforcement layer with at least one second thermally insulating layer;
- and
- covering the second thermally insulating layer with at least one rubber cover layer.
Dependencies are inferred from the claim text.