Patents by Inventor Mitchell A. Karl

Mitchell A. Karl 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).

  • Filter holding frame
    Patent number: 11027230
    Abstract: A filter holding frame that may be used agricultural environments. The filter holding frame may include a plurality of interconnecting members with an upstream hemmed edge and downstream opposing flanges. The opposing flanges of the members may define a sealing face configured for a plurality of air filters. The members of the outer periphery of the filter holding frame may include the mounting surface and the sealing face.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: June 8, 2021
    Assignee: AMERICAN AIR FILTER COMPANY, INC.
    Inventors: Ronald W. Graves, Mitchell A. Karl
  • Filter holding frame
    Patent number: 10661211
    Abstract: A filter holding frame that may be used agricultural environments. The filter holding frame may include a plurality of interconnecting members with an upstream hemmed edge and downstream opposing flanges. The opposing flanges of the members may define a sealing face configured for a plurality of air filters. The members of the outer periphery of the filter holding frame may include the mounting surface and the sealing face.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: May 26, 2020
    Assignee: AMERICAN AIR FILTER COMPANY, INC.
    Inventors: Ronald W. Graves, Mitchell A. Karl
  • FILTER HOLDING FRAME
    Publication number: 20200129902
    Abstract: A filter holding frame that may be used agricultural environments. The filter holding frame may include a plurality of interconnecting members with an upstream hemmed edge and downstream opposing flanges. The opposing flanges of the members may define a sealing face configured for a plurality of air filters. The members of the outer periphery of the filter holding frame may include the mounting surface and the sealing face.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 30, 2020
    Inventors: Ronald W. Graves, Mitchell A. Karl
  • FILTER HOLDING FRAME
    Publication number: 20180345193
    Abstract: A filter holding frame that may be used agricultural environments. The filter holding frame may include a plurality of interconnecting members with an upstream hemmed edge and downstream opposing flanges. The opposing flanges of the members may define a sealing face configured for a plurality of air filters. The members of the outer periphery of the filter holding frame may include the mounting surface and the sealing face.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 6, 2018
    Inventors: Ronald W. Graves, Mitchell A. Karl
  • Air humidification system
    Patent number: 9285133
    Abstract: A humidifier for use in a central HVAC duct. The humidifier includes a water delivery system for applying water to an evaporator pad, a drain system for removing excess water that is not evaporated, and a control system employing two temperature sensors directly measuring the temperature of the air before and after the evaporator pad. The control system uses the two temperatures to adjust the water flow across the pad by cycling the water delivery system so that drain water is minimized while maximizing the evaporative capacity of the humidifier thus satisfying the humidification load as quickly as possible with the least amount of drain water. The humidifier may have either an integral fan or a flow-through housing for passing air across the wetted evaporator pad to increase the humidity level of the air.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 15, 2016
    Assignee: AIR SYSTEM COMPONENTS, INC.
    Inventors: Stephen M. Schneider, Mitchell A. Karl, Ronald W. Graves
  • Air Humidification System
    Publication number: 20130186611
    Abstract: A humidifier for use in a central HVAC duct. The humidifier includes a water delivery system for applying water to an evaporator pad, a drain system for removing excess water that is not evaporated, and a control system employing two temperature sensors directly measuring the temperature of the air before and after the evaporator pad. The control system uses the two temperatures to adjust the water flow across the pad by cycling the water delivery system so that drain water is minimized while maximizing the evaporative capacity of the humidifier thus satisfying the humidification load as quickly as possible with the least amount of drain water. The humidifier may have either an integral fan or a flow-through housing for passing air across the wetted evaporator pad to increase the humidity level of the air.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 25, 2013
    Applicant: AIR SYSTEM COMPONENTS, INC.
    Inventors: Stephen M. Schneider, Mitchell A. Karl, Ronald W. Graves