Hose construction
First Claim
1. A flexible hose construction comprising an inner thermoplastic tubular member having a base section with circumferentially spaced axially extending radially outwardly protruding ribs thereon, a support member disposed over said inner tubular member, said support member being of generally tubular configuration and having radially inwardly directed portions thereon protruding between the ribs of said inner member, a reinforcement wound over said support member and an outer cover over said reinforcement said ribs on said inner tubular member being generally of dovetail configuration in cross section having substantially straight sides forming undercut portions into which said radially inwardly directed portions of said support member protrude, substantially completely filling said undercut portions to provide a radial interlocking engagement, said ribs having a curved partly cylindrical outer surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A flexible hose construction formed by the non-mandrel extrusion of an inner plastic liner having plural axially extending dovetail shaped projections, extrusion of a rubber support member over the liner in interlocking engagement, winding a yarn reinforcement over the relatively stiff composite core structure, extrusion of a rubber or thermoplastic elastomeric cover thereover and vulcanization of the structure.
121 Citations
9 Claims
- 1. A flexible hose construction comprising an inner thermoplastic tubular member having a base section with circumferentially spaced axially extending radially outwardly protruding ribs thereon, a support member disposed over said inner tubular member, said support member being of generally tubular configuration and having radially inwardly directed portions thereon protruding between the ribs of said inner member, a reinforcement wound over said support member and an outer cover over said reinforcement said ribs on said inner tubular member being generally of dovetail configuration in cross section having substantially straight sides forming undercut portions into which said radially inwardly directed portions of said support member protrude, substantially completely filling said undercut portions to provide a radial interlocking engagement, said ribs having a curved partly cylindrical outer surface.
-
8. A flexible tubular composite structure for transporting fluids and accommodating end fittings, comprising an inner flexible tubular member having a smooth bore in engagement with a more flexible outer tubular member having a substantially smooth cylindrical outer surface, radial inwardly and outwardly extending projections integral with said outer and inner members, respectively, and in interlocking engagement with one another, said projections being substantially equally circumferentially spaced, and extending the full length of said tubular members;
- said radial outwardly extending projections having curved outer surfaces forming part of a generally cylindrical surface suited for support of end fittings, the radial thickness of said outer member over said curved outer surfaces being at least as great as one-third the radial thickness of said composite structure.
- View Dependent Claims (9)
Specification