Patents by Inventor Joseph E. Dunn

Joseph E. Dunn 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).

  • Patent number: 10400906
    Abstract: The disclosed embodiments include a valve assembly (300) that includes a piezo stack (308); a piezo actuator (306) encompassing the piezo stack, the piezo actuator having flexural elements (304) that provide a stroke multiplier that amplifies movement of the piezo stack; a valve block (318) having an inlet flow path (320) and an outlet flow path (322); a diaphragm (314) seated atop the valve block, wherein an outer part of the diaphragm is rigid and an inner part of the diaphragm is moveable in a vertical axis; and a bi-lateral flexure (312), wherein a bottom part of the piezo actuator is mechanically attached to the diaphragm via the bi-lateral flexure.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: September 3, 2019
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Scott E. Shirey, Andrew C. Dymek, Sean C. Dunn, Joseph C. Dille
  • Patent number: 7038219
    Abstract: An apparatus, and related methods for sterilizing microorganisms in a container, the apparatus consists of the container including a blister formed therein and a backing material that together with the blister form a cavity in which is contained a contact lens and a preservative fluid. A flashlamp generates high-intensity, short-duration pulses of light for deactivating microorganisms within the container by illuminating the container with the pulses of light having been generated.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: May 2, 2006
    Assignee: PurePulse Technologies, Inc.
    Inventors: Reginald Wayne Clark, James C. Lierman, Donald Lander, Joseph E. Dunn
  • Publication number: 20030155531
    Abstract: An apparatus, and related methods for sterilizing microorganisms in a container, the apparatus consists of the container including a blister formed therein and a backing material that together with the blister form a cavity in which is contained a contact lens and a preservative fluid. A flashlamp generates high-intensity, short-duration pulses of light for deactivating microorganisms within the container by illuminating the container with the pulses of light having been generated.
    Type: Application
    Filed: October 26, 2001
    Publication date: August 21, 2003
    Inventors: Reginald Wayne Clark, James C. Lierman, Donald Lander, Joseph E. Dunn
  • Patent number: 6566659
    Abstract: An approach for sterilizing microorganisms at a target object employs a flashlamp system including means for generating pulses of light, and for deactivating microorganisms within the target object by illuminating the target object with the pulses of light having been generated; a photo-sensitive detector positioned so as to receive a portion of each of the pulses of light as a measure of an amount of light illuminating the target object, for generating an output signal in response thereto; and a control system, coupled to the flashlamp system and the photo-sensitive detector, for determining, in response to the output signal, whether the pulses of light are sufficient to effect a prescribed level of deactivation of microorganisms at the target object.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: May 20, 2003
    Assignee: PurePulse Technologies, Inc.
    Inventors: Reginald Wayne Clark, James C. Lierman, Donald Lander, Joseph E. Dunn
  • Publication number: 20020091294
    Abstract: A method of deactivating microorganisms in food products, packaging material, water, air, and other products involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad- spectrum polychromatic light. In variations of this embodiment, the light has an intensity of at least 0.1 J/cm2, the pulse duration is from between about 10 nanoseconds and 10 milliseconds, and/or at least 50% of the at least one pulse's energy is transmitted in light having wavelength from between about 170 and 2600 nanometers. Advantageously, the microorganisms may be Cryptosporidium parvum oocysts, Bacillus pumilus spores or poliovirus.
    Type: Application
    Filed: March 26, 2001
    Publication date: July 11, 2002
    Inventors: Joseph E. Dunn, Reginald Wayne Clark, Andrew H. Bushnell, Kenton J. Salisbury
  • Patent number: 6228332
    Abstract: A system of deactivating microorganisms in water involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad-spectrum polychromatic light. The system includes a watertight housing having an inlet port and an outlet port for the flow water. A tubular light source for deactivating microorganisms and a tubular baffle for directing the water flow are positioned within the watertight housing. Waters enters the inlet port and flows between the watertight housing and the tubular baffle in one direction, around the end of the tubular baffle and back through the center of the tubular baffle in a second direction exiting the outlet port. In one embodiment, the inlet and outlet ports are positioned at the same end of the watertight housing. In a another embodiment, the inlet port is at the end of the watertight housing and the outlet port extends radially from the tubular baffle through the side of the watertight housing.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: May 8, 2001
    Assignee: PurePulse Technologies
    Inventors: Joseph E. Dunn, Reginald Wayne Clark, Andrew H. Bushnell, Kenton J Salisbury
  • Patent number: 6110423
    Abstract: A system for deactivating organisms in a food product employs a first electrode; an insulator section coupled to the first electrode, wherein the insulator section includes an insulator pinch, an opening, and a transition region interposed thereinbetween, and wherein the opening has a larger cross-sectional area than the insulator pinch, the insulator section including a cavity, passing through the insulator pinch, the transition region, and the opening, wherein the food product is contained during deactivating of organisms; and a second electrode coupled to the insulator section, wherein the first electrode is positioned on a first side of the insulator pinch, and the second electrode is positioned on a second side of the insulator pinch, whereby an electric field formed between the first electrode and the second electrode, when a voltage is applied across the first electrode and the second electrode, passes through the insulator pinch.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 29, 2000
    Assignee: Purepulse Technologies, Inc.
    Inventors: Andrew H. Bushnell, Joseph E. Dunn, Reginald Wayne Clark, Samuel W. Lloyd
  • Patent number: 5925885
    Abstract: An approach for sterilizing microorganisms at a target object employs a flashlamp system including means for generating pulses of light, and for deactivating microorganisms within the target object by illuminating the target object with the pulses of light having been generated; a photo-sensitive detector positioned so as to receive a portion of each of the pulses of light as a measure of an amount of light illuminating the target object, for generating an output signal in response thereto; and a control system, coupled to the flashlamp system and the photo-sensitive detector, for determining, in response to the output signal, whether the pulses of light are sufficient to effect a prescribed level of deactivation of microorganisms in the target object.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: July 20, 1999
    Assignee: PurePulse Technologies, Inc.
    Inventors: Reginald Wayne Clark, James C. Lierman, Donald Lander, Joseph E. Dunn
  • Patent number: 5900211
    Abstract: A method of deactivating microorganisms in food products, packaging material, water, air, and other products involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad-spectrum polychromatic light. In variations of this embodiment, the light has an intensity of at least 0.1 J/cm.sup.2, the pulse duration is from between about 10 nanoseconds and 10 milliseconds, and/or at least 50% of the at least one pulse's energy is transmitted in light having wavelength from between about 170 and 2600 nanometers. Advantageously, the microorganisms may be Cryptosporidium parvum oocysts, Bacillus pumilus spores or poliovirus.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: May 4, 1999
    Assignee: Purepulse Technologies
    Inventors: Joseph E. Dunn, Reginald Wayne Clark, Andrew H. Bushnell, Kenton J Salisbury
  • Patent number: 5786598
    Abstract: An approach for sterilizing product containers and deactivating microorganisms in such containers employs the container, which, in one embodiment, includes a polyolefin, and which transmits light in a spectrum of from between 180 nm and 300 nm. The container may be coupled to a port through which a product within the container can be withdrawn, or, alternatively, may include a blister that together with a backing material forms a cavity in which a contact lens is contained. A flashlamp system generates high-intensity, short-duration pulses of polychromatic light in a broad spectrum. The pulses of light generated by the flashlamp illuminate the container and thereby deactivate microorganisms within the container. In some embodiments, the container contains a transmissive product that transmits more than about one percent of light at a wavelength of 260 nm.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: July 28, 1998
    Assignee: PurePulse Technologies, Inc.
    Inventors: Reginald Wayne Clark, James C. Lierman, Donald Lander, Joseph E. Dunn
  • Patent number: 5658530
    Abstract: An improved method and apparatus for deactivating contaminants involves illuminating one portion of the contaminants with light having frequencies within a first prescribed frequency range, resulting in the deactivating of the one portion of the contaminants, and illuminating another portion of the contaminants with light having frequencies within a second prescribed frequency range, the other portion being at a titanium dioxide supplemented surface, so as to initiate the release of a highly reactive agent in a reaction in which titanium dioxide serves as a catalyst. The highly reactive agent deactivates the other portion of the contaminants.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: August 19, 1997
    Assignee: PurePulse Technologies, Inc.
    Inventor: Joseph E. Dunn
  • Patent number: 5514391
    Abstract: The present invention is directed to methods and apparatuses for preserving fluid foodstuffs. More particularly, it is directed to methods and apparatuses for extending the shelf life of perishable fluid foodstuffs such as dairy products, fruit juices and liquid egg products, which contain significant levels of microorganisms. The improved methods and apparatuses incorporate a plurality of electric field treatment zones with cooling units between each pair of treatment zones in order to maintain the temperature of the pumpable foodstuff at a level at which microorganisms are killed in sufficient numbers and at which changes in the flavor, appearance, odor, or functionality of the foodstuff remain within acceptable ranges. For a comparable microorganism kill, foodstuffs prepared by the present process have significantly higher quality than foodstuffs prepared with standard thermal processes (e.g., ultra-high temperature pasteurization).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 7, 1996
    Assignee: Pure Pulse Technologies
    Inventors: Andrew H. Bushnell, Reginald W. Clark, Joseph E. Dunn, Samuel W. Lloyd
  • Patent number: 5489442
    Abstract: A method for prolonging the shelf-life of perishable food products includes applying a fluid coating to a surface of the food product. The fluid coating adheres to the surface and forms a solid coating that covers the surface. The solid coating is preferably an edible coating and is at least partially transparent to light having a frequency within a prescribed frequency range, and the solid coating reduces the accessibility of the surface of the food product to microorganisms. Next, the solid coating is illuminated with light within the prescribed frequency range. At least a portion of the light passes through the solid coating and deactivates microorganisms at and near the surface of the food product thereby increasing the shelf-life of the food product. An apparatus for carrying out the above method has an application device that applies the fluid coating material to the surface; a light source that illuminates the solid coating with light; and a energizing device that energizes the light source.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: February 6, 1996
    Assignee: Purepulse Technologies, Inc.
    Inventors: Joseph E. Dunn, Thomas M. Ott, Reginald W. Clark
  • Patent number: 5447733
    Abstract: Microorganisms are deactivated in a food product using an electrode placed into electrical contact with the food product. A current signal is applied to the electrode during a specified time period, causing a deactivating charge to build up on the first electrode. An electrical field results from the deactivating charge having an electric field strength of at least 5,000 volts/cm. Substantially all of a residual charge is removed from the first electrode during a discharge period, such that an approximately zero net charge is delivered to the first electrode following the discharge period, thereby reducing electrophoretic side-effects. The current signal causes an electrical double layer at the electrode to charge to a prescribed voltage. One embodiment, the prescribed voltage does not exceed a reaction voltage of a prescribed reacting material species for more than a prescribed threshold period, thereby reducing electrochemical reactions within the food product.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: September 5, 1995
    Assignee: PurePulse Technologies, Inc.
    Inventors: Andrew H. Bushnell, Reginald W. Clark, Joseph E. Dunn, Samuel W. Lloyd
  • Patent number: 5393541
    Abstract: Microorganisms are killed in a food product using an electrode placed into electrical contact with the food product, a charge supply circuit, a switch that selectively couples the charge supply circuit to the electrode, and a controller. The switch first configures the charge supply circuit so as to deliver a charge to the electrode when the switch assumes a first state, and next configures the charge supply circuit so as to absorb the charge from the electrode when the switch assumes a second state. As a result, a net charge delivered to the electrode is substantially zero. The controller controls the switch to sequentially assume the first and second states. The delivery of the zero net charge prevents the fouling of the electrode.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: February 28, 1995
    Assignee: Foodco Corporation
    Inventors: Andrew H. Bushnell, Reginald W. Clark, Joseph E. Dunn, Samuel W. Lloyd
  • Patent number: 5235905
    Abstract: The present invention is directed to methods and apparatus for preserving fluid foodstuffs, and more particularly, is directed to such methods and apparatus for extending the shelf life of perishable fluid foodstuffs such as dairy products, fruit juices and liquid egg products, which are growth media for microorganisms. The present invention is also directed to preserved liquid foodstuffs which have extended shelf life.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: August 17, 1993
    Assignee: Foodco Corporation
    Inventors: Andrew H. Bushnell, Joseph E. Dunn, R. Wayne Clark, Jay S. Pearlman
  • Patent number: 5048404
    Abstract: The present invention is directed to methods and apparatus for preserving fluid foodstuffs, and more particularly is directed to such methods and apparatus for extending the shelf life of perishable fluid foodstuffs such as dairy products, fruit juices and liquid egg products, which are growth media for microorganisms. The present invention is also directed to preserved liquid foodstuffs which have extended shelf life.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: September 17, 1991
    Assignee: Foodco Corporation
    Inventors: Andrew H. Bushnell, Joseph E. Dunn, R. Wayne Clark
  • Patent number: 5034235
    Abstract: Methods for food product preservation by inactivation of microorganisms and/or enzymes by applying pulses of very intense, very short duration pulses of light in the visible and near visible frequencies to the surface of food products to be preserved. Also disclosed are packaging methods and apparatus utilizing such intense, short pulses of polychromatic, incoherent light.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: July 23, 1991
    Assignee: Maxwell Laboratories, Inc.
    Inventors: Joseph E. Dunn, R. Wayne Clark, John F. Asmus, Jay S. Pearlman, Keith Boyer, Francois Painchaud, Gunter A. Hofmann
  • Patent number: 4910942
    Abstract: Methods and apparatus for food product preservation by inactivation of microorganisms and/or enzymes by applying pulses of very intense, very short duration pulses of light in the visible and near visible frequencies to the surface of food products to be preserved. Also disclosed are packaging methods and apparatus utilizing such intense, short pulses of polychromatic, incoherent light.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: March 27, 1990
    Assignee: Maxwell Laboratories, Inc.
    Inventors: Joseph E. Dunn, R. Wayne Clark, John F. Asmus, Jay S. Pearlman, Keith Boyer, Fraincois Painchaud, Gunter A. Hofmann
  • Patent number: 4871559
    Abstract: Methods and apparatus for food product preservation by inactivation of microorganisms and/or enzymes by applying pulses of very intense, very short duration pulses of light in the visible and near visible frequencies to the surface of food products to be preserved. Also disclosed are packaging methods and apparatus utilizing such intense, short pulses of polychromatic, incoherent light.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: October 3, 1989
    Assignee: Maxwell Laboratories, Inc.
    Inventors: Joseph E. Dunn, R. Wayne Clark, John F. Asmus, Jay S. Pearlman, Keith Boyer, Fraincois Painchaud, Gunter A. Hofmann