Patents by Inventor David W. Needham

David W. Needham 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).

  • Reagent dosing pump assembly
    Patent number: 9518592
    Abstract: A pump assembly having improved cooling for use in a selective catalytic reduction system is disclosed. The pump assembly comprises a pump housing having a body portion and a nozzle portion extending from the body portion, a jacket including a cavity for receiving the pump housing, first and second ports for cooling fluid, and a flow guide disposed between the jacket and the pump housing. The cavity includes a first compartment for cooling fluid defined in part by the flow guide and in part by the pump housing and being in fluid communication with the first port; and a second compartment for cooling fluid defined in part by the flow guide and in part by the jacket. The first compartment is in fluid communication with the second port by way of the second compartment.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 13, 2016
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Keith E. Wright, Michael Peter Cooke, David W. Needham, Martin Paul Hardy
  • REGEANT DOSING PUMP ASSEMBLY
    Publication number: 20140010640
    Abstract: A pump assembly having improved cooling for use in a selective catalytic reduction system is disclosed. The pump assembly comprises a pump housing having a body portion and a nozzle portion extending from the body portion, a jacket including a cavity for receiving the pump housing, first and second ports for cooling fluid, and a flow guide disposed between the jacket and the pump housing. The cavity includes a first compartment for cooling fluid defined in part by the flow guide and in part by the pump housing and being in fluid communication with the first port; and a second compartment for cooling fluid defined in part by the flow guide and in part by the jacket. The first compartment is in fluid communication with the second port by way of the second compartment.
    Type: Application
    Filed: March 22, 2012
    Publication date: January 9, 2014
    Applicant: DELPHI TECHNOLOGIES HOLDING, S.A.R.L.
    Inventors: Keith E. Wright, Michael Peter Cooke, David W. Needham, Martin Paul Hardy