Patents by Inventor John Jarrett Miller

John Jarrett Miller 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).

  • Printing press with registration control
    Patent number: 6070529
    Abstract: A printing press includes a plate cylinder defining a nip with an impression cylinder. A drive shaft is drivingly connected to the impression cylinder to rotate the impression cylinder. A first gear is mounted on the drive shaft and is drivingly connected to the drive shaft. A differential mechanism is driven by the first gear. A second gear is mounted on the drive shaft for rotation relative to the drive shaft. The second gear is rotatably driven by the differential. A third gear in mesh with the second gear drivingly connects with the plate cylinder to rotate the plate cylinder. A correction drive motor, when energized, varies the speed at which the differential drives the second gear. The correction drive motor thus varies the speed of rotation of the plate cylinder relative to the impression cylinder.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: June 6, 2000
    Assignee: Stevens International, Inc.
    Inventor: John Jarrett Miller
  • Printing press with nip adjustment
    Patent number: 5778780
    Abstract: A printing press has a replaceable cassette removably mounted on a frame. An impression cylinder cooperates with a printing cylinder in the cassette to define a nip through which sheet material moves during printing on the sheet material. The impression cylinder is movable relative to the frame between a retracted position in which the impression cylinder is offset to one side of the cassette and a printing position in which the impression cylinder extends into the cassette. In addition, a manually actuatable mechanism is provided to simultaneously adjust the size of opposite ends of a gap at the nip between the printing cylinder and the impression cylinder.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: July 14, 1998
    Assignee: Stevens International
    Inventor: John Jarrett Miller
  • Apparatus for facilitating printing cassette replacement
    Patent number: 5715749
    Abstract: A transfer cart (10) facilitates exchange of printing cassettes in a printing press (14), the printing cassettes have respective images to be printed. A first shelf (70) of the transfer cart (10) receives a replacement printing cassette (12b) from a cassette storage facility (16). The transfer cart (10) has a base (60) with wheels (62) such that the transfer cart can be moved from the storage facility (16) to a location adjacent to the printing press (14). A second shelf (74) of the transfer cart (10) receives a replaceable printing cassette (12a) from the printing press (14) while the replacement cassette (12b) is retained on the first shelf (70).
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: February 10, 1998
    Assignee: Stevens International
    Inventor: John Jarrett Miller