Patents by Inventor Lewis Conrad Keller

Lewis Conrad Keller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120015091
    Abstract: A method for making a direct expanded snack piece shaped like a peanut is disclosed. Ingredients comprising peanut flour, ground corn product, rice flour and oat flour are introduced into an extruder. The ingredients are hydrated and extruded through an orifice adapted to produce a puffed snack piece shaped like a peanut and cut into puffed snacks. The puffed snacks are dried and seasoned.
    Type: Application
    Filed: September 27, 2011
    Publication date: January 19, 2012
    Applicant: FRITO-LAY NORTH AMERICA, INC.
    Inventors: Ashish ANAND, Lewis Conrad KELLER, V.N. Mohan RAO
  • Patent number: 8062685
    Abstract: A method for making a direct expanded snack piece shaped like a peanut is disclosed. Ingredients comprising peanut flour, ground corn product, rice flour and oat flour are introduced into an extruder. The ingredients are hydrated and extruded through an orifice adapted to produce a puffed snack piece shaped like a peanut and cut into puffed snacks. The puffed snacks are dried and seasoned.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: November 22, 2011
    Assignee: Frito-Lay North America, Inc.
    Inventors: Ashish Anand, Lewis Conrad Keller, V. N. Mohan Rao
  • Publication number: 20100123262
    Abstract: A method for normalizing the exit velocity of multiple extrudate strands from a multiple die extruder and apparatus for producing the same. The invention describes utilizing a die with individual channels, and installing metering assembly on each individual channel. The metering assembly can then be adjusted to independently increase or decrease the velocity of product through an orifice. By independently adjusting individual velocities of extrudate strands, after successive iterations of adjusting, measuring, and readjusting, a plurality of extrudate stands can be produced having substantially uniform velocity. Further the invention can comprise a single extruder or a co-extruder used to make a co-extruded product wherein uniform velocity becomes more desirable.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 20, 2010
    Inventors: Lewis Conrad Keller, Donald Joe Tatsch
  • Publication number: 20100074981
    Abstract: The improved apparatus includes an improved extruder die assembly comprising a forming section, an injection section, and a converging nozzle section having axially aligned ridgelines which gradually project into the bore of the nozzle as the nozzle converges to gradually disrupt the axial flow of an extrudate at specific peripheral points thereby altering the extrudate's velocity profile. By gradually disrupting the axial flow in close proximity to the projecting ridgelines prior to its extrusion, the dimensional quality of the resulting direct expanded food piece is greatly improved. Moreover, by carefully positioning the capillary channels of the injection section into that portion of the flowing extrudate not affected by the axially aligned ridgelines, a distinct colored and/or flavored pattern is imparted into the extrudable food mass during the extrusion process while improving the quality of dimensional design aspects of the resulting extruded, complexly shaped, direct expanded food products.
    Type: Application
    Filed: November 30, 2009
    Publication date: March 25, 2010
    Applicant: FRITO-LAY OF NORTH AMERICA, INC.
    Inventors: Jorge C. Morales-Alvarez, Eugenio Bortone, Lewis Conrad Keller, Edward Leon Ouellette, Scott Alan Richey
  • Patent number: 7648352
    Abstract: The improved apparatus includes an improved extruder die assembly comprising a forming section, an injection section, and a converging nozzle section having axially aligned ridgelines which gradually project into the bore of the nozzle as the nozzle converges to gradually disrupt the axial flow of an extrudate at specific peripheral points thereby altering the extrudate's velocity profile. By gradually disrupting the axial flow in close proximity to the projecting ridgelines prior to its extrusion, the dimensional quality of the resulting direct expanded food piece is greatly improved. Moreover, by carefully positioning the capillary channels of the injection section into that portion of the flowing extrudate not affected by the axially aligned ridgelines, a distinct colored and/or flavored pattern is imparted into the extrudable food mass during the extrusion process while improving the quality of dimensional design aspects of the resulting extruded, complexly shaped, direct expanded food products.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 19, 2010
    Assignee: Frito-Lay North America, Inc.
    Inventors: Jorge C. Morales-Alvarez, Eugenio Bortone, Lewis Conrad Keller, Edward Leon Ouellette, Scott Alan Richey
  • Publication number: 20080248180
    Abstract: An extruded legume snack food comprising an extruded puff product based on a dried legume powder having a shape that is a facsimile of the natural starting material, such as a pea pod. A legume powder is mixed with a starch, extruded, and then shaped. The extrudate can be shaped by a number of forming devices or, in an alternative embodiment, by the orifice shape of an extrusion die when the extrudate is face cut from the extruder.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 9, 2008
    Inventors: Michelle Latrese Barnett, Akhilesh Gautam, Lewis Conrad Keller, Dimitrious Lykimitros, Jorge C. Morales-Alverez, Scott Alan Richey
  • Publication number: 20080248179
    Abstract: A method for making a direct expanded snack piece shaped like a peanut is disclosed. Ingredients comprising peanut flour, ground corn product, rice flour and oat flour are introduced into an extruder. The ingredients are hydrated and extruded through an orifice adapted to produce a puffed snack piece shaped like a peanut and cut into puffed snacks. The puffed snacks are dried and seasoned.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 9, 2008
    Inventors: Ashish Anand, Lewis Conrad Keller, V.N. Mohan Rao
  • Patent number: 7252847
    Abstract: An extruder die assembly and method for using same is disclosed that may be adapted to a wide variety of commercial-grade extrusion devices common in the food industry. The disclosed method comprises extruding a known composition of a farinaceous food product through the extruder die assembly of the present invention to produce a flavored direct-expanded food product exhibiting enhanced flavor characteristics, but requiring no post-extrusion drying or seasoning process. The injection section of the extruder die assembly is used to impart flavoring additives into the extrudate mass shortly before expansion, thereby preserving the flavoring characteristics of the additive by minimizing the heat exposure of the flavoring additive. The extruder die assembly may also include static mixing elements downstream from the injection section to homogenize the flavoring or seasoning media into the flowing mass of extrudate.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: August 7, 2007
    Assignee: Frito-Lay North America, Inc.
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez
  • Patent number: 6854970
    Abstract: An extruder die assembly and method for using same is disclosed which is designed for adaptation to a wide variety of commercial-grade extrusion devices common in the food industry. The extruder die assembly is inserted into an appropriate compartment within an extrusion device such that a first extrudate is directed down a coaxially aligned passageway within the forming section and combined with a fluid additive in the injection section whereupon the resulting food mass is compressed through a converging nozzle bore in the nozzle section to produce an extruded food product. The forming section and injection section are fabricated as a matching set. A novel feature of the invention is an injection nozzle which supplies fluid additives from an exterior pressurized source to a supply port formed in the extruder die assembly. The subject injection nozzle exhibits superior sealing qualities in conjunction with simplicity and flexibility.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 15, 2005
    Assignee: Frito-Lay North America, Inc.
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez, Edward Leon Ouellette
  • Publication number: 20040022910
    Abstract: An extruder die assembly and method for using same is disclosed which is designed for adaptation to a wide variety of commercial-grade extrusion devices common in the food industry. The extruder die assembly is inserted into an appropriate compartment within an extrusion device such that a first extrudate is directed down a coaxially aligned passageway within the forming section and combined with a fluid additive in the injection section whereupon the resulting food mass is compressed through a converging nozzle bore in the nozzle section to produce an extruded food product. The forming section and injection section are fabricated as a matching set. A novel food product is also disclosed. A known composition of a farinaceous food product is extruded through the extruder die assembly of the present invention to produce a flavored direct-expanded food product exhibiting enhanced flavor characteristics, but requiring no post-extrusion drying or seasoning process.
    Type: Application
    Filed: July 18, 2003
    Publication date: February 5, 2004
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez
  • Publication number: 20040018286
    Abstract: An extruder die assembly and method for using same is disclosed which is designed for adaptation to a wide variety of commercial-grade extrusion devices common in the food industry. The extruder die assembly is inserted into an appropriate compartment within an extrusion device such that a first extrudate is directed down a coaxially aligned passageway within the forming section and combined with a fluid additive in the injection section whereupon the resulting food mass is compressed through a converging nozzle bore in the nozzle section to produce an extruded food product. The forming section and injection section are fabricated as a matching set. A novel feature of the invention is an injection nozzle which supplies fluid additives from an exterior pressurized source to a supply port formed in the extruder die assembly. The subject injection nozzle exhibits superior sealing qualities in conjunction with simplicity and flexibility.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 29, 2004
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez, Edward Leon Ouellette
  • Patent number: 6620448
    Abstract: An extruder die assembly and method for using same is disclosed which is designed for adaptation to a wide variety of commercial-grade extrusion devices common in the food industry. The extruder die assembly is inserted into an appropriate compartment within an extrusion device such that a first extrudate is directed down a coaxially aligned passageway within the forming section and combined with a fluid additive in the injection section whereupon the resulting food mass is compressed through a converging nozzle bore in the nozzle section to produce an extruded food product. The forming section and injection section are fabricated as a matching set.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: September 16, 2003
    Assignee: Recot, Inc.
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez, Edward Leon Ouellette, V.N. Mohan Rao, Vanessa Suzanne Terry
  • Publication number: 20030082257
    Abstract: An extruder die assembly and method for using same is disclosed which is designed for adaptation to a wide variety of commercial-grade extrusion devices common in the food industry. The extruder die assembly is inserted into an appropriate compartment within an extrusion device such that a first extrudate is directed down a coaxially aligned passageway within the forming section and combined with a fluid additive in the injection section whereupon the resulting food mass is compressed through a converging nozzle bore in the nozzle section to produce an extruded food product. The forming section and injection section are fabricated as a matching set.
    Type: Application
    Filed: October 29, 2001
    Publication date: May 1, 2003
    Inventors: Lewis Conrad Keller, Jorge C. Morales-Alvarez, Edward Leon Ouellette, V.N. Mohan Rao, Vanessa Suzanne Terry
  • Patent number: 6555153
    Abstract: The method for producing extruded, farinaceous pellets includes extruding a mixture so that it expands upon exiting an extruder. This prepuffed ribbon is then subjected to stretching and cutting steps to produce pellets. The prepuffing reduces the moisture content of the ribbon so that cut pellets made from the ribbon can be immediately processed without the need for a moisture conditioning and/or dehydration step. In stretching, the extrudate ribbon is passed through a set of rollers to increase the extrudate ribbon's velocity thereby causing the ribbon to stretch. Stretching the extrudate ribbon causes a reduction in thickness along with an increase in density. After cutting, the pellets can then be expanded in a puffing stage to produce a product that has a desirable light and crunchy texture.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: April 29, 2003
    Assignee: RECOT, Inc.
    Inventors: Lewis Conrad Keller, Joseph William Kelly, Nancy J. Moriarity
  • Patent number: 6242034
    Abstract: In the process of producing corn-based pellets, preconditioner steam and water addition, as well as extruder water or screw configuration and RPM, can be manipulated to precisely control the cook level, gelatinization, and moisture level of the meal during processing, and level of defects despite minor variation in the characteristics of the corn flour. Specifically, the preconditioner added steam-to-water ratio can be manipulated to effect cook, hydration, and partial gelatinization of the meal. In the extruder, lower extruder rotational speeds increase the residence time and increases cook. With the increase in residence time the volume of bed pack in the extruder increases. This can be reversed by adding water directly into the extruder, thereby decreasing the viscosity of the meal in the extruder. Product bulk density is changed by increasing and decreasing cook of the meal.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: June 5, 2001
    Assignee: Recot, Inc.
    Inventors: Ajay Rajeshwar Bhaskar, Kevin Charles Cogan, Lewis Conrad Keller, V. N. Mohan Rao, David Ray Warren
  • Patent number: D440377
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: April 17, 2001
    Assignee: Recot, Inc.
    Inventors: Lewis Conrad Keller, Sherryl Marie Smyer, Gregg Stephen Victor
  • Patent number: D459052
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: June 25, 2002
    Assignee: Recot, Inc.
    Inventors: Lewis Conrad Keller, Janette Marie Pool