Patents by Inventor Dennis Dutkevitch

Dennis Dutkevitch 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: 6311831
    Abstract: A tube loading system includes two flat conveyor belts which are perpendicular to each other for holding a tube having an open end thereagainst with two lines of contact; a motor drive for moving the conveyor belts; a gap between the two lines of contact at meeting edges of the conveyor belts; a vacuum source positioned behind the conveyor belts for supplying a vacuum to the gap so as to pull the tube against both conveyor belts in engagement with the two lines of contact; a pin chain having a plurality of pins spaced therealong for receiving the open ends of the tubes thereon, the pins being positioned adjacent the conveyor belts; and a delivery device for supplying the tubes in sequence to the conveyor belts such that each tube is held in engagement against both conveyor belts with the two lines of contact by the vacuum at the gap, and as the belt moves, each tube is deposited on a respective pin of the pin chain.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: November 6, 2001
    Assignee: Polytype America Corporation
    Inventors: Pieter S. van der Griendt, Dennis Dutkevitch
  • Patent number: 5335818
    Abstract: A vending mechanism for a cylindrical article dispenser of a type having a column of stacked cylindrical articles moved along a dispensing pathway by a force, such as by the force of gravity, is disclosed, which has an escapement mechanism which is attachable in operative alignment with a vending pathway of a column of stacked cylindrical articles. An upstream arm is pivotably attached in the escapement mechanism, having a first position blocking a portion of the vending pathway and having a second position retracted from the vending pathway to allow cylindrical articles to move past the upstream arm. A downstream arm is pivotably attached in the escapement mechanism, having a first position blocking a portion of the vending pathway and having a second position retracted from the vending pathway to allow cylindrical articles to move past the downstream arm.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: August 9, 1994
    Assignee: C-Power Companies, Inc.
    Inventors: Algert J. Maldanis, Robert I. Courts, Dennis Dutkevitch, David J. Mooney