Patents by Inventor John F. Kaman

John F. Kaman 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).

  • Videotape adaptor for use with a cartridge
    Patent number: 5402954
    Abstract: An adaptor for using a tape cartridge in a standard VHS videotape machine. The adaptor includes a thumb operated winder and a take up reel. The take up reel includes a clutch to minimize drag on the winder.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: April 4, 1995
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: James E. Skavnak, John F. Kaman, Thomas A. Turgeon, Jerrold K. Weeks
  • Videotape adaptor for use with a cartridge
    Patent number: 5234179
    Abstract: An adaptor for using a tape cartridge in a standard VHS videotape machine. The adaptor includes a thumb operated winder and a take up reel. The take up reel includes a clutch to minimize drag on the winder.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: August 10, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James E. Skavnak, John F. Kaman, Thomas A. Turgeon, Jerrold K. Weeks