Patents by Inventor Douglas E. Thompson

Douglas E. Thompson 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: 6935064
    Abstract: The invention disclosed is a device for use as a shooting platform. The shooting platform may be attached to a receiver hitch on a vehicle and may be collapsed against the vehicle for storing and for transportation on the vehicle. The shooting platform may be adaptable for right and left handed shooters. The device may include a seat for the user. The platform and the seat may have height adjustments to fit the preferences of a user and may also have adjustments to permit the leveling and/or the preferences of a user for angular positioning.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: August 30, 2005
    Inventor: Douglas E. Thompson
  • Patent number: 4974977
    Abstract: A replacement cartridge for replacing spent ink ribbon on a continuous printer. The cartridge interfaces with the printer including a print head past which a document is advanced, a drive for feeding the ribbon tape, and a source of vacuum for effecting vacuum zones in which the feeding tape is buffered against acceleration shock. Included in the cartridge are a supply and takeup reel for the ribbon and between which the ribbon extends in a defined feed path through a pair of tape buffering vacuum chambers upstream and downstream of the print head. Magnets secure the cartridge to the printer at a guided interface in registry with the operative components of the printer. Pre-loading the ribbon in the cartridge entirely threaded throughout its feed path, enables replacement to be performed in a minimum of time requiring only the removal of the spent cartridge and immediately replacing it with the cartridge containing the reload of fresh ribbon.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: December 4, 1990
    Assignee: BancTec, Inc.
    Inventors: Robert S. Morgan, Douglas E. Thompson