Patents by Inventor Hans Raar

Hans Raar 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).

  • Ribbon cassette
    Patent number: 5224785
    Abstract: A cassette for a printer unit which includes an endless ribbon, a mechanism for transporting the ribbon, and a mechanism for causing the ribbon to move reciprocally comparatively slowly in a direction substantially transversely of the direction of movement of the ribbon. A camming track may be utilized for moving the ribbon wherein the driving of the camming track is coupled to the transporting mechanism for the ribbon.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 6, 1993
    Assignee: Merlin C.T.C. Production Division Nederland B.V.
    Inventor: Hans Raar
  • Ink cassette with control means for alternately driving one of two spool bearing therein
    Patent number: 5005999
    Abstract: An ink ribbon cassette includes two rotatable bearings for respective spools, a drive system for alternately rotating one or the other of the two bearings so that a ribbon extending between the spools positioned on the bearings will be moved in opposite directions depending on which bearing is being rotated, and a control system for controlling which bearing is being driven by the drive system based on actuation by respective trip elements on the ribbon near its opposite ends.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: April 9, 1991
    Assignee: Merlin C.T.C. Production Division Nederland B.V.
    Inventors: Hans Raar, Jan Kelders
  • Ink cassette and ink transfer roll therefor
    Patent number: 4940345
    Abstract: In a cassette for a printer unit, comprising an endless ribbon to be provided with ink, means are provided for intermittently applying ink to said ribbon. These means for applying ink comprise a freely movable wheel enclosed between the ink source and the ribbon and between connecting elements of houding and/or cover of the cassette.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: July 10, 1990
    Assignee: Merlin C.T.C. Production Division Nederland B.V.
    Inventor: Hans Raar