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US 2012/0058268 A1Published application
Method of making convoluted coated braided hose assembly
OwnerNorman S. Martucci, Michael A. Martucciinventors
Life of this patent
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Abstract
A seamless convoluted hose assembly. The assembly includes: a tubular inner liner having an outer surface, an inner surface, and an inner liner wall therebetween which defines a passageway. The assembly further includes a helical coil or a plurality of annular loops which produce convolutions in the outer surface of the tubular liner when the tubular inner liner is forced through the helical coil or plurality of loops under heat and pressure.
Claims15
A method of forming a seamless convoluted hose assembly including the steps of:
- applying radially outward pressure and heat to an inner surface of a meltable, expandable tubular inner liner;
- and
- restricting outward expansion of a first plurality of segments of an inner liner wall of the tubular inner liner while allowing outward expansion of a second plurality of segments of the inner liner wall of the tubular inner liner, each member of the first plurality of segments being adjacent to a member of the second plurality of segments, the first plurality of segments thereby becoming the valleys of a plurality of convolutions, and the second plurality of segments becoming the peaks of the plurality of convolutions.
Dependencies are inferred from the claim text.