Patents by Inventor Karl-Ludwig Manuel

Karl-Ludwig Manuel 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).

  • Sewing machine comprising a device for steering towards the end of a seam
    Patent number: 6776112
    Abstract: A sewing machine has a device for steering towards a predetermined end (E) of a seam (B1). An alternating movement of the feed elements of the sewing machine, which occurs when the stitch adjusting device is set, is taken into consideration in the calculation of the target stitch length (Sb) of the final optionally shortened end stitch (Nre) of the seam, in such a way that the setting value that deviates from the target stitch length is produced.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: August 17, 2004
    Assignee: G.M. PFAFF Aktiengesellschaft in Insolvenz
    Inventors: Lothar Bruehl, Edgar Butzen, Karl-Ludwig Manuel
  • SEWING MACHINE COMPRISING A DEVICE FOR STEERING TOWARDS THE END OF A SEAM
    Publication number: 20040099191
    Abstract: A sewing machine has a device for steering towards a predetermined end (E) of a seam (B1). An alternating movement of the feed elements of the sewing machine, which occurs when the stitch adjusting device is set, is taken into consideration in the calculation of the target stitch length (Sb) of the final optionally shortened end stitch (Nre) of the seam, in such a way that the setting value that deviates from the target stitch length is produced.
    Type: Application
    Filed: June 2, 2003
    Publication date: May 27, 2004
    Inventors: Lothar Bruehl, Edgar Butzen, Karl-Ludwig Manuel
  • Sewing machine with a light barrier
    Patent number: 6527403
    Abstract: A sewing machine with a light barrier used to detect the edge of a workpiece has an optical light guide (17) connected to the light source (15). The optical guide (17) is arranged in the thread guide hook (12). The thread guide hook (12) is fastened to the front side of the head (4) of the housing and is designed as a small tube for this purpose.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: March 4, 2003
    Assignee: Pfaff Industrie Maschinen AG
    Inventor: Karl-Ludwig Manuel
  • Sewing machine with speed-dependent stitch correction
    Patent number: 6450110
    Abstract: In a sewing machine, the speed-dependent change in the stitch length is compensated by a speed-dependent correction of the setting of the stitch regulating device. A linear stitch length desired value curve Ss is obtained.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: September 17, 2002
    Assignee: G.M. Pfaff Aktiengesellschaft
    Inventors: Lother Brühl, Edgar Butzen, Karl-Ludwig Manuel
  • Sewing machine with speed-dependent stitch correction
    Publication number: 20020020334
    Abstract: In a sewing machine, the speed-dependent change in the stitch length is compensated by a speed-dependent correction of the setting of the stitch regulating device. A linear stitch length desired value curve Ss is obtained.
    Type: Application
    Filed: April 19, 2001
    Publication date: February 21, 2002
    Inventors: Lother Bruhl, Edgar Butzen, Karl-Ludwig Manuel
  • Sewing machine with a light barrier
    Publication number: 20010033496
    Abstract: A sewing machine with a light barrier used to detect the edge of a workpiece has an optical light guide (17) connected to the light source (15). The optical guide (17) is arranged in the thread guide hook (12). The thread guide hook (12) is fastened to the front side of the head (4) of the housing and is designed as a small tube for this purpose.
    Type: Application
    Filed: April 18, 2001
    Publication date: October 25, 2001
    Inventor: Karl-Ludwig Manuel
  • Apparatus and method for the stacking and storing of workpieces
    Patent number: 4768773
    Abstract: A system for the stacking and storing of workpieces particularly from a sewing machine comprises a movable carrier with two receiving compartments for the workpieces to be stacked, two storage channels spaced from each other by the width of a receiving compartment, and two push units. The carrier is so controlled by a pneumatic cylinder that one of the receiving compartments stands in stack forming position below a work transfer device and the other is aligned with one of the storage channels.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: September 6, 1988
    Assignee: Pfaff Industriemaschinen GmbH
    Inventors: Gunter Mall, Karl-Ludwig Manuel
  • Sewing machine with a workpiece alignment device
    Patent number: 4722290
    Abstract: A sewing machine with a workpiece alignment device for the automatic stitching of workpieces with convex edge sections has a stepwise feed mechanism and an alignment tool operating alternately with the feed mechanism. The tool rotates the workpiece around the axis of the needle when the needle pierces the material, and holds it resting against a guide rule. The alignment tool is driven by drive mechanisms positively connected to one another, because of which the sewing machine can be operated at a relatively high speed.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: February 2, 1988
    Assignee: Pfaff Industriemaschinen AG
    Inventors: Karl-Ludwig Manuel, Werner Striegler
  • Sewing machine
    Patent number: D828407
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 11, 2018
    Assignee: Pfaff Industriesysteme Und Maschinen GmbH
    Inventors: Karl-Ludwig Manuel, Christian Barsties
  • Sewing machine
    Patent number: D908744
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 26, 2021
    Inventors: Karl-Ludwig Manuel, Christian Barsties