Patents by Inventor Michael Crondahl

Michael Crondahl 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: 11821684
    Abstract: A method for drying materials is disclosed. The method comprises introducing a material into a dryer chamber, creating steam from vaporizing moisture in the material by maintaining the chamber at a temperature, conditioning the material using the steam created from vaporing moisture in the material by conveying the material along a length of the chamber from an inlet end to an outlet end, exhausting steam near the inlet end of the chamber, exhausting steam near a dry-end exit end of the chamber, controlling a migration of moisture between the inlet and outlet ends by adjusting an exhaust flow rate near the inlet end of the chamber and/or an exhaust flow rate near the dry-end exit end of the chamber, and withdrawing the material from the chamber.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: November 21, 2023
    Assignee: Westmill Industries Ltd.
    Inventor: Michael Crondahl
  • Publication number: 20230092366
    Abstract: A method for drying materials is disclosed. The method comprises introducing a material into a dryer chamber, creating steam from vaporizing moisture in the material by maintaining the chamber at a temperature, conditioning the material using the steam created from vaporing moisture in the material by conveying the material along a length of the chamber from an inlet end to an outlet end, exhausting steam near the inlet end of the chamber, exhausting steam near a dry-end exit end of the chamber, controlling a migration of moisture between the inlet and outlet ends by adjusting an exhaust flow rate near the inlet end of the chamber and/or an exhaust flow rate near the dry-end exit end of the chamber, and withdrawing the material from the chamber.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 23, 2023
    Inventor: Michael CRONDAHL
  • Patent number: 11536513
    Abstract: An apparatus for drying materials is disclosed. The apparatus has a chamber which is heated to a temperature sufficient to vaporize the water in the material into steam. The dryer is configured to utilize the steam produced from the material to condition the material. The dryer has two exhaust stacks positioned at opposing ends of the dryer. The removal of exhaust steam at the two opposing ends of the dryer facilitates the migration of moisture within the chamber along a length of the dryer between the two ends. The exhaust stacks can be controlled and adjusted based on feedback from a plurality of pressure differential transmitters installed within the chamber. Methods for drying materials are also disclosed.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: December 27, 2022
    Assignee: Westmill Industries Ltd.
    Inventor: Michael Crondahl
  • Publication number: 20220281131
    Abstract: Systems and methods for treating wood products are provided. The methods comprise preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation and subsequently treating the wood product. The systems comprise one or more fixtures positioned to irradiate one or more surfaces of the wood product with IR and/or UV radiation, wherein each fixture comprises a reflector and a radiation source.
    Type: Application
    Filed: May 17, 2022
    Publication date: September 8, 2022
    Inventors: Michael CRONDAHL, Christian GOLLMANN
  • Patent number: 11370145
    Abstract: Systems and methods for treating wood products are provided. The methods comprise preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation and subsequently treating the wood product. The systems comprise one or more fixtures positioned to irradiate one or more surfaces of the wood product with IR and/or UV radiation, wherein each fixture comprises a reflector and a radiation source.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: June 28, 2022
    Assignee: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Christian Gollmann
  • Patent number: 11193211
    Abstract: A cathodic protection system for use with a wood veneer dryer is provided. The system includes a DC power supply and an anode mounted inside the dryer in a position to be electrolytically coupled to metallic structures or surfaces inside the dryer when an electrolytic medium is present inside the dryer. The electrolytic medium comprises a high-humidity atmosphere. A method for reducing the corrosion of metallic structures or surfaces inside the dryer is further provided. The method comprises mounting an anode inside the dryer in a position to be electrolytically coupled to the metallic structures or surfaces inside the dryer when an electrolytic medium is present. Wood veneer is conveyed through the dryer and heated to a temperature sufficient to produce a high-humidity atmosphere inside the dryer. A controlled amount of current is supplied by the DC power supply to electrolytically couple the anode to the metallic structures or surfaces.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: December 7, 2021
    Assignee: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Christian Gollmann
  • Publication number: 20210123674
    Abstract: An apparatus for drying materials is disclosed. The apparatus has a chamber which is heated to a temperature sufficient to vaporize the water in the material into steam. The dryer is configured to utilize the steam produced from the material to condition the material. The dryer has two exhaust stacks positioned at opposing ends of the dryer. The removal of exhaust steam at the two opposing ends of the dryer facilitates the migration of moisture within the chamber along a length of the dryer between the two ends. The exhaust stacks can be controlled and adjusted based on feedback from a plurality of pressure differential transmitters installed within the chamber. Methods for drying materials are also disclosed.
    Type: Application
    Filed: October 19, 2020
    Publication date: April 29, 2021
    Inventor: Michael CRONDAHL
  • Publication number: 20210078199
    Abstract: Systems and methods for treating wood products are provided. The methods comprise preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation and subsequently treating the wood product. The systems comprise one or more fixtures positioned to irradiate one or more surfaces of the wood product with IR and/or UV radiation, wherein each fixture comprises a reflector and a radiation source.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Inventors: Michael CRONDAHL, Christian GOLLMANN
  • Publication number: 20190211459
    Abstract: A cathodic protection system for use with a wood veneer dryer is provided. The system includes a DC power supply and an anode mounted inside the dryer in a position to be electrolytically coupled to metallic structures or surfaces inside the dryer when an electrolytic medium is present inside the dryer. The electrolytic medium comprises a high-humidity atmosphere. A method for reducing the corrosion of metallic structures or surfaces inside the dryer is further provided. The method comprises mounting an anode inside the dryer in a position to be electrolytically coupled to the metallic structures or surfaces inside the dryer when an electrolytic medium is present. Wood veneer is conveyed through the dryer and heated to a temperature sufficient to produce a high-humidity atmosphere inside the dryer. A controlled amount of current is supplied by the DC power supply to electrolytically couple the anode to the metallic structures or surfaces.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Inventors: Michael CRONDAHL, Christian GOLLMANN
  • Patent number: 10317138
    Abstract: Baffle systems for conveyor-type dryers and methods of replacing baffle seal strips for improving dryer safety and/or efficiency are provided. The systems include one or more baffles removeably mounted to the dryer. Each baffle has at least one seal strip for contacting a roller of the dryer to prevent gases from entering and/or exiting the dryer. The baffles are removable from the dryer so that the seal strips can be replaced and/or adjusted when the seal between a given seal strip and a contacting roller become compromised. To replace and/or adjust a seal strip, the baffle is removed from the dryer and a new baffle is installed in its place. The one or more seal strips of the removed baffle may be replaced and/or adjusted outside the dryer at the leisure of the operator.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: June 11, 2019
    Assignee: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Christian Gollmann
  • Patent number: 10273585
    Abstract: A cathodic protection system for use with a wood veneer dryer is provided. The system includes a DC power supply and an anode mounted inside the dryer in a position to be electrolytically coupled to metallic structures or surfaces inside the dryer when an electrolytic medium is present inside the dryer. The electrolytic medium comprises a high-humidity atmosphere. A method for reducing the corrosion of metallic structures or surfaces inside the dryer is further provided. The method comprises mounting an anode inside the dryer in a position to be electrolytically coupled to the metallic structures or surfaces inside the dryer when an electrolytic medium is present. Wood veneer is conveyed through the dryer and heated to a temperature sufficient to produce a high-humidity atmosphere inside the dryer. A controlled amount of current is supplied by the DC power supply to electrolytically couple the anode to the metallic structures or surfaces.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: April 30, 2019
    Assignee: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Christian Gollmann
  • Patent number: 10006712
    Abstract: A recirculating system for use with a green wood veneer dryer is provided. The recirculating system includes a duct connecting an input end seal chamber at an input end of a drying chamber to at least one fan disposed within the drying chamber. The at least one fan generates a negative pressure differential within the duct to redirect gases from the input end seal chamber to the drying chamber to maintain the pressure within the input end seal chamber within an accurate range of pressure external the veneer dryer. A method of drying green wood veneer is provided including recirculating gases from the input end seal chamber to the drying chamber and maintaining the pressure within the input end seal chamber within an accurate range of the pressure external the dryer.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: June 26, 2018
    Assignee: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Burnell Wimer
  • Publication number: 20160363370
    Abstract: Baffle systems for conveyor-type dryers and methods of replacing baffle seal strips for improving dryer safety and/or efficiency are provided. The systems include one or more baffles removeably mounted to the dryer. Each baffle has at least one seal strip for contacting a roller of the dryer to prevent gases from entering and/or exiting the dryer. The baffles are removable from the dryer so that the seal strips can be replaced and/or adjusted when the seal between a given seal strip and a contacting roller become compromised. To replace and/or adjust a seal strip, the baffle is removed from the dryer and a new baffle is installed in its place. The one or more seal strips of the removed baffle may be replaced and/or adjusted outside the dryer at the leisure of the operator.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 15, 2016
    Inventors: Michael Crondahl, Christian Gollmann
  • Publication number: 20160362797
    Abstract: A cathodic protection system for use with a wood veneer dryer is provided. The system includes a DC power supply and an anode mounted inside the dryer in a position to be electrolytically coupled to metallic structures or surfaces inside the dryer when an electrolytic medium is present inside the dryer. The electrolytic medium comprises a high-humidity atmosphere. A method for reducing the corrosion of metallic structures or surfaces inside the dryer is further provided. The method comprises mounting an anode inside the dryer in a position to be electrolytically coupled to the metallic structures or surfaces inside the dryer when an electrolytic medium is present. Wood veneer is conveyed through the dryer and heated to a temperature sufficient to produce a high-humidity atmosphere inside the dryer. A controlled amount of current is supplied by the DC power supply to electrolytically couple the anode to the metallic structures or surfaces.
    Type: Application
    Filed: June 10, 2015
    Publication date: December 15, 2016
    Inventors: Michael Crondahl, Christian Gollmann
  • Publication number: 20160097592
    Abstract: A recirculating system for use with a green wood veneer dryer is provided. The recirculating system includes a duct connecting an input end seal chamber at an input end of a drying chamber to at least one fan disposed within the drying chamber. The at least one fan generates a negative pressure differential within the duct to redirect gases from the input end seal chamber to the drying chamber to maintain the pressure within the input end seal chamber within an accurate range of pressure external the veneer dryer. A method of drying green wood veneer is provided including recirculating gases from the input end seal chamber to the drying chamber and maintaining the pressure within the input end seal chamber within an accurate range of the pressure external the dryer.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 7, 2016
    Applicant: Westmill Industries Ltd.
    Inventors: Michael Crondahl, Burnell Wimer
  • Patent number: 6477807
    Abstract: A door hinge system and door assembly allow a door in a wood veneer dryer to be pulled directly away from its associated door frame before being allowed to swing open in the normal fashion, thus reducing wear on the seal between the door and the door frame. The door assembly allows the tightness of the door to be easily adjusted without the need for shims, and allows the tightness to be adjusted even when the dryer is in operation.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: November 12, 2002
    Assignee: Westmill Industries Limited
    Inventors: Michael A. Crondahl, David M. Chard, James W. Chard, Jr., Ryan E. Johnson