Patents by Inventor John Joseph Dembowski

John Joseph Dembowski 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 of controling biasing force before and during chopping
    Patent number: 7594460
    Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains a mechanism such as a slip clutch or a limited torque stepping motor for maintaining a substantially constant biasing force at set up and during operation while allowing the rolls to separate slightly to pass a temporary thicker feed without recoil that currently shortens blade and backup roll working layer life.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: September 29, 2009
    Assignee: Johns Nanville
    Inventors: Randall Clark Bascom, Douglas James Kempski, John Joseph Dembowski
  • Fiber chopper and method of chopping
    Patent number: 7168355
    Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains a mechanism such as a slip clutch or a limited torque stepping motor for maintaining a substantially constant biasing force at set up and during operation while allowing the rolls to separate slightly to pass a temporary thicker feed without recoil that currently shortens blade and backup roll working layer life.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: January 30, 2007
    Assignee: Johns Manville
    Inventors: Randall Clark Bascom, Douglas James Kempski, John Joseph Dembowski
  • Fiber chopper and method of chopping
    Publication number: 20040025653
    Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains a mechanism such as a slip clutch or a limited torque stepping motor for maintaining a substantially constant biasing force at set up and during operation while allowing the rolls to separate slightly to pass a temporary thicker feed without recoil that currently shortens blade and backup roll working layer life.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 12, 2004
    Inventors: Randall Clark Bascom, Douglas James Kempski, John Joseph Dembowski