초록 ▼

A hollow conduit and process for manufacturing therefore which includes steps of extruding a first polymer conduit; cutting said conduit to a pre-determined length; inserting said length into a split mold having a cavity defined therein; inserting at least one flexible position retaining means into

A hollow conduit and process for manufacturing therefore which includes steps of extruding a first polymer conduit; cutting said conduit to a pre-determined length; inserting said length into a split mold having a cavity defined therein; inserting at least one flexible position retaining means into said mold; injection molding at least one overmolded polymer onto said plastic conduit and at least partially onto said position retaining means to form a position retaining tube, wherein a portion of the length of said position retaining means is completely embedded within said overmolded polymer and a portion of the length is not embedded within said overmolded polymer; and opening said mold and removing said position retaining tube.

대표청구항 ▼

1. A process which comprises: extruding a first polymer conduit;cutting said conduit to a pre-determined length;inserting said length into a split mold having a cavity defined therein;inserting at least one flexible position retaining means at least partially into said mold;injection molding at leas

1. A process which comprises: extruding a first polymer conduit;cutting said conduit to a pre-determined length;inserting said length into a split mold having a cavity defined therein;inserting at least one flexible position retaining means at least partially into said mold;injection molding at least one overmolded polymer onto said plastic conduit and at least partially onto said position retaining means to form a position retaining tube, wherein a portion of the length of said position retaining means is completely embedded within said overmolded polymer and a portion of the length is not embedded within said overmolded polymer;opening said mold and removing said position retaining tube, said at least one flexible position retaining means extending at least partially along a length of said overmolded polymer. 2. The process of claim 1 wherein said flexible position retaining means is a metallic wire. 3. The process of claim 2 wherein said first polymer conduit is a thermoset; and said overmolded polymer is a thermoplastic. 4. The process of claim 1 wherein said cavity in said mold is corrugated. 5. The process of claim 1, wherein said flexible position retaining means is completely inserted into said mold. 6. The process in claim 1 wherein said first polymer conduit is n-sided where n is greater than or equal to three. 7. The process in claim 1 wherein said position retaining tube is an n-sided conduit where n is greater than or equal to three. 8. A process which comprises: extruding a first polymer conduit; cutting said conduit to a pre-determined length; inserting at least one flexible position retaining means at least partially into a split mold having a cavity defined therein; injection molding at least one overmolded polymer at least partially onto said position retaining means to form a position retaining tube, wherein a portion of the length of said position retaining means is completely embedded within said overmolded polymer and a portion of the length is not embedded within said overmolded polymer; opening said mold and removing said position retaining tube; and positioning said position retaining tube at least partially around said length of said first polymer conduit, said at least one flexible position retaining means extending at least partially along a length of said overmolded polymer. 9. The process of claim 8 wherein said flexible position retaining means is a metallic wire. 10. The process of claim 9 wherein said first polymer conduit is a thermoset; and said overmolded polymer is a thermoplastic. 11. The process of claim 8 wherein said cavity in said mold is corrugated. 12. The process of claim 8, wherein said flexible position retaining means is completely inserted into said mold. 13. The process in claim 8 wherein said first polymer conduit is n-sided where n is greater than or equal to three. 14. The process in claim 8 wherein said position retaining tube is an n-sided conduit where n is greater than or equal to three.