Patents by Inventor Karl H. Ligensa

Karl H. Ligensa 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: 4932816
    Abstract: A device for connecting the feet of an aircraft seat to a perforated rail with a C-shaped cross-section includes a base unit on which two feet are centrally arranged at a spacing distance from each other that is equal to the space between the holes. A bridge that overlaps the base unit from above has two legs that encompass the base unit between them and are supported on the rail. An anchor fitting which as an outside shape adapted to the shape of the holes at least over a portion of its periphery is height-adjustable relative to the feet by way of the two legs of the bridge. One of the two feet is arranged between the anchor fitting and the other foot.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: June 12, 1990
    Assignee: Keiper Recaro GmbH & Co.
    Inventor: Karl H. Ligensa
  • Patent number: 4591207
    Abstract: Continuously adjustable hinge, such as employed for automotive vehicle recliner seat back, wherein a toothed sector on one hinge element is retained by a toothed pawl on the other which has freedom of mounting connection at least equal to the pitch of one tooth in order to accommodate full tooth engagement for any continuously variable relative position of the sector. A pair of pivotally anchored cam elements engage angularly related cam surfaces on the pawl after its full tooth engagement with the sector. Variable travel of cam surface to accommodate fully engaged prepositioned pawl with self-locking angle resisting pawl displacement in either angular direction from sector tooth pressure, is sufficient to accommodate at least one tooth displacement of the pawl in order to lock the pawl in any position of initial full tooth engagement.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: May 27, 1986
    Assignee: Keiper Recaro Inc.
    Inventors: Egon Nithammer, Karl H. Ligensa, Fred C. Kresky