The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 1989
Filed:
Nov. 03, 1988
Paul E McGill, Neshanic, NJ (US);
Frank J Pitigliano, Bedminister, NJ (US);
Somerset Technologies, Inc., New Brunswick, NJ (US);
Abstract
An accumulator extrusion head assembly for producing a parison having at least one stripe extending longitudinally thereof comprises an extrusion head body member having an opening extending inwardly from a nozzle outlet end and a mandrel positioned in the body member to define a generally annular extrusion chamber terminating in an annular outlet nozzle. An annular ram is mounted in the extrusion chamber and has a forward end positioned for reciprocation toward and away from the outlet nozzle. A first supply extruder is connected to the body member through first passages for supplying a first extrusion material to the annular extrusion chamber. A second supply extruder is also connected to the body member through second passages for supplying a second extrusion material to the annular extrusion chamber. The second passages include a supply outlet in the forward end of the ram for providing a radially continuous stripe of the second extrusion material to the annular extrusion chamber and, a connecting passage for maintaining a flow connection between the second extruder and the supply outlet during reciprocation of the ram.