Patents by Inventor Konstantin Schwaab

Konstantin Schwaab 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).

  • Presser foot with slidable plunger
    Patent number: 4679514
    Abstract: A presser foot comprising, a hub having a hollow guide, a plunger having a guide member slidably received in the guide, and a lower portion carrying a sole, with the guide member being biased outwardly in the guide. The presser foot has a guide part secured to the hub guide and having a lower leg directed toward the plunger. The leg and plunger cooperate to prevent rotation of the plunger.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: July 14, 1987
    Assignee: Union Special Corporation
    Inventor: Konstantin Schwaab
  • Material sensing means for sewing machines
    Patent number: 4423691
    Abstract: A device for monitoring the passage of workpiece ends through a sewing machine. The device includes a photosensitive receiver connected to one end of a fiber optic cable. The other end of the cable being arranged opposite a reflecting surface and carried by the sewing machine presser foot in a manner preventing the exposed end face thereof from being defiled.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: January 3, 1984
    Assignee: Union Special GmbH
    Inventor: Konstantin Schwaab
  • Apparatus for controlling the edge of a tubular workpiece
    Patent number: 4185570
    Abstract: This invention relates to a device for controlling the edge of a tubular fabric. More particularly, this invention relates to a tubular fabric edge control device which controls the edge so that it can be hemmed by itself or in conjunction with an elastic tape.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: January 29, 1980
    Assignee: Union Special Corporation G.m.b.H.
    Inventors: Johann O. Kleinschmidt, Konstantin Schwaab