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US 7,449,080 B2Granted
Corrugated hose assembly
OwnerNorman S. Martucci, Boney A. Mathew +1inventors
InventorsNorman S. Martucci, Boney A. Mathew, Rich Hahn
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Abstract
According to the present invention, there is provided a hose assembly with an inner fluoropolymer layer having a somewhat smooth inner surface and an outer polyamide layer having an undulated surface.
Claims14
A method of making a hose assembly including the steps of:
- extruding into a tube shape a tubular smooth inner fluoropolymer layer having a substantially smooth inner surface;
- forming an a substantially continuous jacket having a substantially smooth outer surface over the inner fluoropolymer layer while adhering said jacket and said inner layer together;
- and
- corrugating said jacket after said forming step, said corrugating step further defined as etching the corrugation on the jacket so that said outer surface has undulations.
1 more element
A method of making a hose assembly including the steps of:
- extruding into a tube shape a tubular smooth inner fluoropolymer layer;
- forming a substantially continuous jacket over the inner fluoropolymer layer while adhering said jacket and said inner layer together;
- and corrugating said jacket, said corrugating step further defined as etching the corrugation on the jacket.
Dependencies are inferred from the claim text.