Patents by Inventor Andreas Spring

Andreas Spring 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: 6168284
    Abstract: A lighting apparatus for a sewing machine having a lamp holder, which retains at least one lamp, is arranged on the underside of the head of a sewing machine, and within the range of the needle bar and the presser foot bar. The lamp is constructed to loop around the needle bar and the presser foot bar over an angular range of more than 180°. The type of lamp used is, preferably, a cold-light-cathode florescent lamp, which radiates little, if any, heat, while emitting a pleasant light.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: January 2, 2001
    Assignee: Fritz Gegauf Aktiengesellschaft
    Inventors: Niklaus Wacker, Andreas Spring, Christian Anderegg
  • Patent number: 4646982
    Abstract: A self-sustaining bobbin winding device for use in a sewing machine has a driving unit which carries the bobbin during winding of a thread onto its core, and such unit is driven by an electric motor which can be arrested in response to actuating of an electric switch. The switch is actuated by one arm of a three-armed lever another arm of which is caused to bear against the roll of convoluted thread on the rotating bobbin and initiates a stoppage of the motor when the bobbin has collected a preselected length of thread. The third arm of the lever can be depressed by hand to disengage the other arm from the convoluted thread and to actuate the switch at the will of the operator. A first thread cutting tool is provided on the third arm of the lever, and a second thread cutting tool is provided on the driving unit.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: March 3, 1987
    Assignee: F. Gegauf AG Bernina-Nahmaschinenfabrik
    Inventor: Andreas Spring