Patents by Inventor David L. Vermaat

David L. Vermaat 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).

  • Intermittent drive mechanism for copy stacking
    Patent number: 4898374
    Abstract: A stacking apparatus for a reproduction machine which can accommodate media sheets as greatly different sizes. An intermittent driving device is used so as to alterantely buckle and relax the sheet media thereby urging the sheet into various recesses which are formed in the apparatus so as to engage sheet media of various sizes.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: February 6, 1990
    Assignee: Imagitek, Inc.
    Inventor: David L. Vermaat
  • Hold-down arrangement for copy sheet pick-off system
    Patent number: 4420243
    Abstract: An improved hold-down arrangement for a copy sheet pickoff system in which a pressure finger of insulating material is mounted on the removable transfer corona assembly in such a way that when the assembly is placed in operative position on the machine the pressure finger is located adjacent to the forward edge of the pickoff blade with the operative end of the finger spaced out of contact with the drum by a distance which is approximately equal to the thickness of a sheet of copy paper.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: December 13, 1983
    Assignee: Savin Corporation
    Inventors: James M. Baker, David L. Vermaat