.~ Utilizing internal forming means (e.g., mandrel) or core tube (e.g., wire guide) {4}
268
.~.~ Core tube
DEFINITION
Classification: 72/268
Core tube:
(under subclass 264) Method or means in which the member is a tubular guide means, other than the extrusion orifice or passageway, which extends from outside the closed chamber means into the chamber at a point remote from the orifice and then from the chamber axially into or adjacent the orifice or passageway and is adapted to allow an elongated core means, such as a wire, to be passed therethrough, around which a sheath like extruded product may be formed.
(1) Note. An extrusion device including a core tube is found in many of the subclasses above indented under subclass 253.1, and see also subclass 270 below for a disclosure of the same when the claimed invention lies in a work supply feature.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
51, for extruding a nonmetallic sheath around an electric conductor of indeterminate length.
