Patents by Inventor Dan D. Dowell

Dan D. Dowell 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).

  • Overmolded elastomeric diaphragm pump for pressurization in inkjet printing systems
    Patent number: 6824139
    Abstract: An overmolded diaphragm pump for applying pumping force to a fluid such as liquid ink for ink-jet printing. The pump structure includes a rigid substrate having at least one chamber opening, and an elastomeric diaphragm and sealing structure fabricated of an elastomeric material. This diaphragm and sealing structure is overmolded over a portion of the rigid substrate and includes at least one diaphragm portion extending over a corresponding chamber opening. A gland seal portion makes a seal between the elastomeric diaphragm and sealing structure and a mating part.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: November 30, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Louis C. Barinaga, Dan D. Dowell
  • Overmolded elastomeric diaphragm pump for pressurization in inkjet printing systems
    Publication number: 20020057972
    Abstract: An overmolded diaphragm pump for applying pumping force to a fluid such as liquid ink for ink-jet printing. The pump structure includes a rigid substrate having at least one chamber opening, and an elastomeric diaphragm and sealing structure fabricated of an elastomeric material. This diaphragm and sealing structure is overmolded over a portion of the rigid substrate and includes at least one diaphragm portion extending over a corresponding chamber opening. A gland seal portion makes a seal between the elastomeric diaphragm and sealing structure and a mating part.
    Type: Application
    Filed: January 16, 2002
    Publication date: May 16, 2002
    Inventors: Louis C. Barinaga, Dan D. Dowell