Patents by Inventor Ludwig Nicholas Ross

Ludwig Nicholas Ross 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).

  • Venetian type blind having pivot slat and tilting slat
    Patent number: 6305454
    Abstract: A venetian type blind has a bottomrail, a headrail positioned above the bottomrail, a pivot slat positioned between the headrail and the bottomrail and a tilt slat located immediately below the pivot slat. A set of upper ladders extends from the headrail to the pivot slat and carries a set of upper slats. A set of lower ladders extends from the bottomrail to the tilt slat with each lower ladder being connected to a pivot member on the pivot slat. The lower ladders carry a set of lower slats. At least one pivot cord connects the pivot slat to the tilt slat. This arrangement allows the lower slats to be separately tilted to a different position from the upper slats.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: October 23, 2001
    Inventors: Ren Judkins, Ludwig Nicholas Ross
  • Headrail for cut down venetian type blinds
    Patent number: 6253823
    Abstract: A venetian type blind has a headrail that can be cut down along cut lines very close to the outermost ladder locations. The cradle and spool in the headrail are sized and configured so that the cord lock and tilter can be positioned between a cradle and one side of the headrail.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: July 3, 2001
    Assignees: Springs Window Fashions Division, Inc.
    Inventors: Cletis F. Swopes, Ludwig Nicholas Ross, Ren Judkins