Patents by Inventor David R. Meintrup

David R. Meintrup 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).

  • Invertible multiple-pass ribbon cartridge having two capstans
    Patent number: 4496255
    Abstract: A ribbon cartridge for a serial printer includes a casing containing a supply reel, a take-up reel and a ribbon drive roller. A lower axial end of the drive roller is slotted to receive a drive shaft of a ribbon advance motor on the serial printer. The upper axial end of the drive roller is connected by a tension band to the upper end of the take-up reel shaft. The cartridge may be inverted by removing the tension band from the shafts of the drive roller and take-up reel, inverting the cartridge, and replacing the tension band on the shaft of the other reel and the shaft of a drive roller associated with the second reel.
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: January 29, 1985
    Assignee: NEC Corporation
    Inventors: David R. Meintrup, Janis Dumpis