Patents by Inventor Robert Christopher Sbert

Robert Christopher Sbert 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).

  • Sealing ribs for a developer unit of a dual component development electrophotographic image forming device
    Patent number: 9291947
    Abstract: A developer unit for a dual component development electrophotographic image forming device includes a housing having a reservoir for storing a developer mix that includes toner and magnetic carrier beads. An axial sealing rib projects from an inner side of the housing toward the outer surface of a sleeve of a magnetic roll. The axial sealing rib extends along an axial length of the sleeve. A distal end of the axial sealing rib is positioned in close proximity to and spaced from the outer surface of the sleeve. The axial sealing rib is positioned to impede the flow of developer mix in the reservoir in a direction counter to an operative rotational direction of the sleeve.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: March 22, 2016
    Assignee: Lexmark International, Inc.
    Inventors: Michael Brian Bacelieri, Robert Dan Bennett, III, Gary Allen Denton, Mark Doerre, Katherine Marie Gilliam, Elliott Vincent Jernigan, Michael David Maul, Matthew Lee Rogers, Dominique Renee Rowe, Robert Christopher Sbert, Keith Seaman, Courtney Harrison Soale
  • Assembly for achieving uniform doctor blade force
    Patent number: 8280282
    Abstract: A doctor blade assembly for an electrophotographic printer comprises a first bracket having a first width dimension and a first height dimension, a second bracket having a second width dimension and a second height dimension, a doctor blade disposed between the front bracket and the rear bracket, the doctor blade having a cantilever length, the cantilever length varying from a first length at a first location and a second length at a second location moving along the width dimensions.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: October 2, 2012
    Assignee: Lexmark International, Inc.
    Inventors: Thomas Wilbur Blanck, Jarrett Clark Gayne, Brad Edward Mattingly, Robert Christopher Sbert
  • Assembly for Achieving Uniform Doctor Blade Force
    Publication number: 20090142108
    Abstract: A doctor blade assembly for an electrophotographic printer comprises a first bracket having a first width dimension and a first height dimension, a second bracket having a second width dimension and a second height dimension, a doctor blade disposed between the front bracket and the rear bracket, the doctor blade having a cantilever length, the cantilever length varying from a first length at a first location and a second length at a second location moving along said width dimensions.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 4, 2009
    Inventors: Thomas Wilbur Blanck, Jarrett Clark Gayne, Brad Edward Mattingly, Robert Christopher Sbert