Patents by Inventor Arnold C. Sheldon, II

Arnold C. Sheldon, II 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).

  • Method for separating a sheet from an array of sheets conveyed along a vacuum conveyor using diverting nozzles
    Patent number: 5354047
    Abstract: The instant invention provides a method for reliably separating a selected sheet from a spaced array of sheets transported on a conveyor. The invention continuously maintains vacuum on the conveyors, and uses selectively activated jets directed at the underside of the sheets to divert them for separating. The invention positively controls the destination of discrete, flexible sheets, such as photographic film, by continuously engaging the sheets with another conveyor during separating, sorting, shuffling or the like, as they travel in an array along a conveyor. Positive control of the sheets permits reliable, high speed separating of lightweight, flexible sheets.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: October 11, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Doyle D. Chesnutt, James A. Holler, William J. Hommes, Arnold C. Sheldon, II
  • Apparatus for separating a sheet from an array of sheets
    Patent number: 5295586
    Abstract: The instant invention provides an apparatus and method for reliably separating a selected sheet from a spaced array of sheets transported on a conveyor. The invention continuously maintains vacuum on the conveyors, and uses selectively activated jets directed at the underside of the sheets to divert them for separating. The invention positively controls the destination of discrete, flexible sheets, such as photographic film, by continuously engaging the sheets with another conveyor during separating, sorting, shuffling or the like, as they travel in an array along a conveyor. Positive control of the sheets permits reliable, high speed separating of lightweight, flexible sheets.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: March 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Doyle D. Chesnutt, James A. Holler, William J. Hommes, Arnold C. Sheldon, II