Patents by Inventor David G. Dunn

David G. 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).

  • HEAT PUMP LAUNDRY APPLIANCE WITH MULTI-PASS HEAT EXCHANGER
    Publication number: 20240068151
    Abstract: A laundry appliance includes a cabinet with a drum rotatably mounted within the cabinet. The drum includes a chamber for receipt of articles for drying. The laundry appliance also includes a sealed system configured to heat and remove moisture from process air flowing therethrough. The sealed system includes a multi-pass heat exchanger and a refrigerant splitter upstream of the multi-pass heat exchanger. The refrigerant splitter is configured to direct a flow of refrigerant generally along a vertical direction and/or against the force of gravity.
    Type: Application
    Filed: August 26, 2022
    Publication date: February 29, 2024
    Inventors: Jivko Ognianov Djerekarov, David Scott Dunn, David G. Beers
  • Method of lining a surface with a geosynthetic clay liner
    Patent number: 7018135
    Abstract: A heavy roll dispenser is designed to attach to a tractor via a three-point hitch. The base of the dispenser rides above the earth and supports a chassis, which can move left and right via a hydraulic actuator. The chassis has a pair of powered cradle rollers to receive a heavy roll and dispense the heavy roll with the powered cradle rollers. A guide roller is mounted on the chassis behind the cradle rollers. A pair of powered adjustable width pincer arms stabilizes the heavy roll atop the cradle rollers.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: March 28, 2006
    Assignee: Amcol International Corporation
    Inventors: Joseph B. Kaul, David G. Dunn
  • Large roll dispenser
    Patent number: 6786446
    Abstract: A heavy roll dispenser is designed to attach to a tractor via a three-point hitch. The base of the dispenser rides above the earth and supports a chassis, which can move left and right via a hydraulic actuator. The chassis has a pair of powered cradle rollers to receive a heavy roll and dispense the heavy roll with the powered cradle rollers. A guide roller is mounted on the chassis behind the cradle rollers. A pair of powered adjustable width pincer arms stabilizes the heavy roll atop the cradle rollers.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: September 7, 2004
    Assignee: Amcol International Corporation
    Inventors: Joseph B. Kaul, David G. Dunn
  • Method of lining a surface with a geosynthetic clay liner
    Publication number: 20040161300
    Abstract: A heavy roll dispenser is designed to attach to a tractor via a three-point hitch. The base of the dispenser rides above the earth and supports a chassis, which can move left and right via a hydraulic actuator. The chassis has a pair of powered cradle rollers to receive a heavy roll and dispense the heavy roll with the powered cradle rollers. A guide roller is mounted on the chassis behind the cradle rollers. A pair of powered adjustable width pincer arms stabilizes the heavy roll atop the cradle rollers.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 19, 2004
    Applicant: WEST WATER CONTRACTING
    Inventors: Joseph B. Kaul, David G. Dunn