Patents by Inventor David Mark Pendley

David Mark Pendley 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).

  • Adhesive dispensing system having metering system including variable frequency drive and closed-loop feedback control
    Patent number: 9296009
    Abstract: A hot melt adhesive dispensing unit includes an adhesive supply for receiving solid or semi-solid hot melt adhesive material, an adhesive supply heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive material into a liquid hot melt adhesive material, a manifold connected to the adhesive supply and including a flow rate sensor for measuring a flow rate of the liquid hot melt adhesive material, the flow rate sensor generating flow rate information, a pump connected to the manifold for pumping liquid hot melt adhesive material from the adhesive supply into the manifold, the pump including a pump motor, and a variable frequency drive for controlling the pump motor. The variable frequency drive is in communication with the flow rate sensor for receiving the flow rate information and the pump motor for controlling the speed of the pump motor.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: March 29, 2016
    Assignee: NORDSON CORPORATION
    Inventors: David Robert Bacco, David Mark Pendley
  • ADHESIVE DISPENSING SYSTEM HAVING METERING SYSTEM INCLUDING VARIABLE FREQUENCY DRIVE AND CLOSED-LOOP FEEDBACK CONTROL
    Publication number: 20140014686
    Abstract: A hot melt adhesive dispensing unit includes an adhesive supply for receiving solid or semi-solid hot melt adhesive material, an adhesive supply heater associated with the adhesive supply for melting the solid or semi-solid hot melt adhesive material into a liquid hot melt adhesive material, a manifold connected to the adhesive supply and including a flow rate sensor for measuring a flow rate of the liquid hot melt adhesive material, the flow rate sensor generating flow rate information, a pump connected to the manifold for pumping liquid hot melt adhesive material from the adhesive supply into the manifold, the pump including a pump motor, and a variable frequency drive for controlling the pump motor. The variable frequency drive is in communication with the flow rate sensor for receiving the flow rate information and the pump motor for controlling the speed of the pump motor.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: NORDSON CORPORATION
    Inventors: David Robert Bacco, David Mark Pendley