Craig A Benjamin

US Patent:

20050259507, Nov 24, 2005

Filed:

May 24, 2004

Appl. No.:

10/853475

Inventors:

Martin Ronkin - Salem OR, US
Craig Benjamin - Lebanon OR, US

Assignee:

Entek Manufacturing Inc. - Lebanon OR

International Classification:

B01F015/06
B28B001/08

US Classification:

366069000, 366149000

Abstract:

An extruder barrel segment includes an integral heat-exchanger fluid flow passageway device that is formed into a desired shape. The barrel segment is formed employing a process, such as near net shape casting or lost wax shape casting. A mold pattern is used to make a casting mold of the barrel body. The passageway device is then located into the mold and positioned to ensure that there is no interference. The mold is filled with molten metal that flows around the passageway device and encapsulates it into the barrel body. The mold gates are removed, and the casting is ready for machining.

US Patent:

20070047380, Mar 1, 2007

Filed:

Feb 20, 2006

Appl. No.:

11/358291

Inventors:

Craig Benjamin - Lebanon OR, US
Bainian Oian - Corvallis OR, US

International Classification:

B29B 7/58
B29C 47/64

US Classification:

366081000

Abstract:

A tip adapted to be mounted to the downstream end of an extruder screw. The tip includes a nose section and an extruder screw mount section. The nose section includes an upstream face and a first and second downstream faces. The upstream face has a major plane that is substantially perpendicular to the longitudinal axis of the tip, is substantially flat, and has a substantially circular perimeter. The first and second downstream faces have major planes that are substantially flat. The major plane of the first downstream face is at an angle to the major plane of the second downstream face whereby they meet at a juncture located at the outer end of the tip. The extruder screw mount section includes means for attaching the tip to the extruder screw.

US Patent:

20070177451, Aug 2, 2007

Filed:

Feb 2, 2006

Appl. No.:

11/346693

Inventors:

Craig Benjamin - Lebanon OR, US
Matthew Warren - Salem OR, US

International Classification:

B29B 7/58
A21C 1/00
B01F 7/00

US Classification:

366082000

Abstract:

A serrated kneading disk including a body having a perimeter that is an ellipse having truncated ends, the curved elliptical portions forming flanks and the truncated ends forming crests. The crests are curved to form the arc of a circle having a radius substantially the same as the radius of the bore of the extruder barrel with which the disk is to be used. The disk body has a cylindrical passageway extending through the middle thereof, the passageway having a configuration adapted to allow the kneading disks to be lockingly engaged on the shaft of an extruder screw. A plurality of grooves are formed in the flanks and crests. A serrated kneading block can be formed from a plurality of the serrated kneading disks, or formed as a single body having a plurality of lobes, each lobe being substantially identical to the serrated kneading disk.

US Patent:

20110317510, Dec 29, 2011

Filed:

Jun 23, 2010

Appl. No.:

12/822083

Inventors:

Craig Benjamin - Lebanon OR, US
Larry Keith - Salem OR, US

Assignee:

Entek Manufacturing, Inc. - Lebanon OR

International Classification:

B01F 7/00
B22F 5/00
B22F 7/04
B22F 3/02

US Classification:

366 79, 419 68

Abstract:

A restored metallic extrusion processing element comprises a tubular metal core around which is consolidated a powdered metal extrusion component that includes metallurgically bonded interior shell and exterior working portions. The interior shell portion covers the core and is characterized by a first multiple-crystalline microstructure, and the exterior working portion is characterized by a second multiple crystalline microstructure of densified powdered metal particles. The exterior working portion has an outside surface including outer working surface features that extend along the length of the extrusion processing element. A bond interface of metallurgical type defines a crystalline microstructure boundary between the first and second multiple-crystalline microstructures.

US Patent:

20220314517, Oct 6, 2022

Filed:

Aug 14, 2020

Appl. No.:

17/635331

Inventors:

- Lebanon OR, US
Craig Allen Benjamin - Lebanon OR, US

International Classification:

B29C 48/505
B29C 48/57
B29C 48/68
B29C 48/50
B29C 48/25

Abstract:

Disclosed are additively manufactured extruder components comprising a lattice structure formed within a structural support frame that defines an impervious surface and an axial aperture. An axial aperture of a screw segment is configured to couple to a drive shaft, and its impervious surface is configured to contact extrudable material. An axial aperture of a barrel segment is configured to contact extrudable material.

US Patent:

20220297369, Sep 22, 2022

Filed:

Aug 14, 2020

Appl. No.:

17/635336

Inventors:

- Lebanon OR, US
Craig Allen Benjamin - Lebanon OR, US

International Classification:

B29C 48/505
B29C 48/25
B29C 48/57
B29C 48/68
B29C 48/40

Abstract:

Disclosed are additively manufactured extruder components including a surface layer configured to contact extrudable material. The surface layer has a first additively manufactured metal composition. A base support for the surface layer has a second additively manufactured metal composition that is different from the first additively manufactured metal composition. A functionally graded material (FGM) is formed from the first and second additively manufactured metal compositions connecting the surface layer to the base support.

US Patent:

20200047390, Feb 13, 2020

Filed:

Mar 26, 2019

Appl. No.:

16/605477

Inventors:

- Lebanon OR, US
Dean Justin Elliott - Albany OR, US
Craig Allen Benjamin - Lebanon OR, US

International Classification:

B29C 48/40
B29C 48/505
B29C 48/68
B29C 48/69
C08J 3/20
B29C 48/76

Abstract:

A multiple screw extruder () combines application of vacuum to a vacuum vent () positioned between material feed locations () of the extruder and use of specially configured extruder screws () to extract gases, primarily air, out of the extruder to densify the materials introduced into it and to extract unwanted fluid from material introduced for mixture with molten polymeric material flowing through the extruder. The multiple screw extruder is operationally versatile in that it is capable of carrying out the material densification and fluid extraction processes either separately or simultaneously. Implementation of the disclosed vacuum feed technology provides an increase in rate of extrudate throughput as compared with that achievable by implementation of atmospheric venting () in a conventionally configured extruder ().