Extensible flexible hose, and method and production line for continuously manufacturing thereof
First Claim
1. A method of continuously manufacturing an extensible flexible hose, comprising the following steps:
- (a) providing an inner layer made of a first elastic polymeric material;
(b) elongating the inner layer over an original length thereof;
(c) disposing a textile reinforcement layer on the elongated inner layer so as to obtain a semifinished hose; and
(d) extruding an outer layer made of a second elastic polymeric material on the semifinished hose,wherein extruding the outer layer includes reciprocally coupling the outer and the inner layers so as to obtain a unitary tubular member with the textile reinforcement layer embedded therein,wherein the unitary tubular member has an elasticity sufficient to enable the unitary tubular member to automatically elongate and enlarge under a working pressure given by a liquid flowing therethrough, thereby respectively increasing original length and diameter of the unitary tubular member, and automatically recovering once the working pressure stops, thereby returning to the original length and diameter, andwherein the textile reinforcement layer is adapted to move between a rest configuration assumed when no liquid flows through the unitary tubular member and a working configuration assumed when the unitary tubular member elongates and enlarges under the working pressure.
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Accused Products
Abstract
A hose that includes an inner layer and an outer layer made of an elastic polymeric material, and a textile reinforcement layer interposed between the inner and the outer layers. The inner layer and the outer layer are reciprocally coupled to form a unitary tubular member, within which the textile reinforcement layer is embedded. The unitary tubular member has an elasticity such to automatically elongate under the working pressure given by the liquid flowing therethrough to increase its original length and to automatically recover once the working pressure stops. The textile reinforcement layer is adapted to move from a rest configuration when the working pressure stops to a working configuration when the unitary tubular member elongates under the working pressure, and vice versa.
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15 Claims
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1. A method of continuously manufacturing an extensible flexible hose, comprising the following steps:
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(a) providing an inner layer made of a first elastic polymeric material; (b) elongating the inner layer over an original length thereof; (c) disposing a textile reinforcement layer on the elongated inner layer so as to obtain a semifinished hose; and (d) extruding an outer layer made of a second elastic polymeric material on the semifinished hose, wherein extruding the outer layer includes reciprocally coupling the outer and the inner layers so as to obtain a unitary tubular member with the textile reinforcement layer embedded therein, wherein the unitary tubular member has an elasticity sufficient to enable the unitary tubular member to automatically elongate and enlarge under a working pressure given by a liquid flowing therethrough, thereby respectively increasing original length and diameter of the unitary tubular member, and automatically recovering once the working pressure stops, thereby returning to the original length and diameter, and wherein the textile reinforcement layer is adapted to move between a rest configuration assumed when no liquid flows through the unitary tubular member and a working configuration assumed when the unitary tubular member elongates and enlarges under the working pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification