.~ Utilizing internal forming means (e.g., mandrel) or core tube (e.g., wire guide) {4}
269
.~.~ Bridge mandrel
DEFINITION
Classification: 72/269
Bridge mandrel:
(under subclass 264) Method or means in which the member is a mandrel which is supported by bridge pieces extending from the mandrel across the rear (i.e., the chamber end) of the orifice or passageway.
(1) Note. The bridges split the work stream, which is then
reunited autogenously by pressure prior to extrusion through the orifice.
(2) Note. This subclass includes a bridge mandrel die unit, per se.
