Malcolm G Marshall

US Patent:

6340123, Jan 22, 2002

Filed:

Mar 30, 2000

Appl. No.:

09/424677

Inventors:

Ching-Chin Lee - Hudson OH 44236
Gary Robert Burg - NW. Canton OH 44708
Bruce Joseph Turner - Wadsworth OH 44281
Malcolm George Marshall - Wadsworth OH 44281

International Classification:

B05B 114

US Classification:

239552, 239553, 2395535, 239590, 2395905, 239593, 425461

Abstract:

Apparatus for directing the flow of material from a supply source to one or more shaping dies has a flow channel therein. A flow directing insert ( A) located in the downstream region of the flow channel spreads the material toward the outer walls and improves uniformity of flow in an exit zone ( ). In the downstream region ( ), the channel height is gradually decreased and levels off near the exit. The flow channel may be split into two or mom flow branches ( A, B), each flow branch having a flow directing insert ( A) therein.

US Patent:

6887062, May 3, 2005

Filed:

Dec 1, 1999

Appl. No.:

09/857552

Inventors:

Gary Robert Burg - Massillon OH, US
Malcolm George Marshall - Wadsworth OH, US

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

B29C047/60

US Classification:

425209, 26421121, 366 89

Abstract:

A screw nose for a rubber extruder screw has an upstream portion of increasing diameter providing working engagement of the rubber flowing from the screw with the extruder barrel and a downstream portion of decreasing diameter providing working engagement of the rubber with a converging tapered wall of a flow channel block for reducing the shrinkage and pressure drop at the discharge end of the screw and thereby prevent porosity and blisters in an extruded rubber component.

US Patent:

7040870, May 9, 2006

Filed:

Dec 30, 2003

Appl. No.:

10/750435

Inventors:

Bernard Nicolas - Arlon, BE
Gary Robert Burg - Massion OH, US
Malcolm George Marshall - Wadsworth OH, US

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

F01C 1/16

US Classification:

417 53, 4174104, 4182013

Abstract:

A gear pump and method for pumping elastomeric material having two gears with meshing herringbone gear teeth. Each of the gear teeth has helical side portions and a curved central portion which extends circumferentially of the gear a distance equal to at least one half the pitch of the gear teeth to provide a continuous squeezing contact between the teeth of the two gears for pumping a uniform strip of elastomeric material from the gear pump.

US Patent:

20040185132, Sep 23, 2004

Filed:

Mar 19, 2003

Appl. No.:

10/392069

Inventors:

Ernest Looman - Tallmadge OH, US
Bruce Turner - Wadsworth OH, US
Malcolm Marshall - Wadsworth OH, US
Gary Burg - Massillon OH, US
Neil Stuber - Munroe Falls OH, US

Assignee:

The Goodyear Tire & Rubber Company

International Classification:

B29C047/70

US Classification:

425/19200R, 425/382400, 029/525010

Abstract:

An extruder head for use in forming at least one strip of polymeric material. The extruder head includes a flow channel having a flow inlet end and a flow outlet end. A flow diverter is removably secured within the flow channel of the extruder head. The flow diverter is held securely in place within the flow channel by a fastening mechanism, and the flow diverter can be easily removed from the flow channel for reshaping or reprofiling as may be necessary to achieve a desired velocity profile of polymeric material flow at the flow outlet end of the flow channel.

US Patent:

58366806, Nov 17, 1998

Filed:

Mar 26, 1996

Appl. No.:

8/622662

Inventors:

Mark Daniel Banas - Cuyahoga Falls OH
Gary Robert Burg - Canton OH
Malcolm George Marshall - Wadsworth OH
Thomas Alan Murray - Akron OH
Bruce Joseph Turner - Wadsworth OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

B29C 4700

US Classification:

366 80

Abstract:

An extruder for extruding an associated material includes an extruder housing that has a feed section, a center section that includes a throttle section, and an outlet section with an extruder screw disposed in the extruder housing. The extruder also includes a throttle at the throttle section. The throttle has a plurality of pins that extend radially into the housing. The pins are adjusted by a cam extending around the extruder housing. The cam has an inner wall that has a plurality of cam surfaces engageable by pins. The radius of each of the cam surfaces gradually decreases from a maximum radius to a minimum radius distance. The pins have springs that urge the pins radially outward to contact the inner wall of the cam. The cam is rotated by a piston and cylinder assembly. The extruder further includes sensors for temperature, gauge, weight, and other properties of the material.

US Patent:

20140119153, May 1, 2014

Filed:

Oct 26, 2012

Appl. No.:

13/661392

Inventors:

- Akron OH, US
Patrice De Monte - Arlon, BE
Malcolm George Marshall - Wadsworth OH, US

International Classification:

B29B 7/80
B29C 47/38

US Classification:

366 90

Abstract:

An extruder apparatus is disclosed and which includes a cylindrical barrel having a feed end and a discharge end, the feed end having an outlet in fluid communication with a feed box. The extruder screw is mounted in the cylindrical barrel, and the screw has an outer surface having one or more helical flights mounted thereon. The screw has a discharge end and a terminal end, wherein the screw further comprising a notch at the terminal end.