Patents by Inventor Robert C. Dart

Robert C. Dart 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).

  • Patent number: 9527620
    Abstract: A commercially viable paper wrapped foam cup comprising a taper portion that prevents the shrinkage-induced curling from interfering with the un-nesting of nested paper wrapped foam cups. The paper wrapped cup further comprises a fillet for strengthening the cup foot to retard shrinkage-induced curling of the foot. The paper wrapper has abutting to overlapping opposing ends to completely hide the foam cup to enhance the visual appearance of the cup. The overlapping portions of the paper wrapper are not bonded to each other to prevent wrinkling of the paper wrapper as the cup shrinks. A machine and corresponding method provide for automatically supplying foam cups and paper wrappers, wrapping the paper wrapped cup, and stacking the wrapped cups.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: December 27, 2016
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, Roger E. Payne, Steven C. Hills, Steven K. Makela, Brent M. Smith
  • Patent number: 8631957
    Abstract: The invention is a recloseable lid for a drinking cup comprising a cap with a dispensing aperture through which liquid can pass. A plug is movably mounted to the cap and is sized to seal the dispensing aperture when a portion of the plug is inserted into the dispensing aperture.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: January 21, 2014
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, Ryan P. Gingras, Todd Atkins
  • Patent number: 7856793
    Abstract: An apparatus for automatically assembling a wrapper to a foam cup to form a wrapped foam cup.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 28, 2010
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, Roger E. Payne, Steven C. Hills, Steven K. Makela, Brent M. Smith
  • Publication number: 20090229221
    Abstract: An apparatus for automatically assembling a wrapper to a foam cup to form a wrapped foam cup.
    Type: Application
    Filed: May 14, 2009
    Publication date: September 17, 2009
    Applicant: Dart Container Corporation
    Inventors: Robert C. Dart, Roger E. Payne, Steven C. Hills, Steven K. Makela, Brent M. Smith
  • Patent number: 7549273
    Abstract: A commercially viable paper wrapped foam cup comprising a taper portion that prevents the shrinkage-induced curling from interfering with the un-nesting of nested paper wrapped foam cups. The paper wrapped cup further comprises a fillet for strengthening the cup foot to retard shrinkage-induced curling of the foot. The paper wrapper has abutting to overlapping opposing ends to completely hide the foam cup to enhance the visual appearance of the cup. The overlapping portions of the paper wrapper are not bonded to each other to prevent wrinkling of the paper wrapper as the cup shrinks. A machine and corresponding method provide for automatically supplying foam cups and paper wrappers, wrapping the paper wrapped cup, and stacking the wrapped cups.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 23, 2009
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, Roger E. Payne, Steven C. Hills, Steven K. Makela, Brent M. Smith
  • Publication number: 20030089714
    Abstract: The invention is a recloseable lid for a drinking cup comprising a cap with a dispensing aperture through which liquid can pass. A plug is movably mounted to the cap and is sized to seal the dispensing aperture when a portion of the plug is inserted into the dispensing aperture.
    Type: Application
    Filed: November 13, 2002
    Publication date: May 15, 2003
    Inventors: Robert C. Dart, Ryan P. Gingras, Todd Atkins
  • Patent number: 4953743
    Abstract: A lid for use on a drinking cup is provided having a central horizontal cover portion which has a vent means provided therein. The vent means comprise a circular, horizontal top portion having a vent opening therethrough. The top portion has a downwardly depending first wall which has terminal end below the surface of the cover portion. An upwardly extending second wall merges with the terminal end of the first wall and extends upwardly therefrom in an outwardly spaced apart position respect thereto so as to merge with the cover portion of the lid. A plurality of spaced apart ribs connect the first wall and the second wall so as to cooperate therewith the form downwardly depending arcuate wave dampening baffle means which encircle the vent means beneath the surface of the cover portion so as to prevent accidental spillage of the cup contents through the vent means.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: September 4, 1990
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, John R. Darras
  • Patent number: D291040
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: July 28, 1987
    Assignee: Dart Container Corporation
    Inventor: Robert C. Dart
  • Patent number: D323116
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: January 14, 1992
    Assignee: Dart Container Corporation
    Inventors: Robert C. Dart, John R. Darras