Patents by Inventor Fernando C. Echavarrio

Fernando C. Echavarrio 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).

  • Zigzag and transport device for sewing machines
    Patent number: 4641593
    Abstract: A sewing machine provides zigzag and feed drive features through operation of independent synchronized stepper motors. A first stepper motor imparts reciprocating motion to a first rack piece which is hingedly connected to a middle piece and a lever. The lever is connected to a needle supporting piece which imparts zigzag motion to a needle. A second stepper motor through a second rack piece imparts oscillating motion to a connecting rod. Shifting motion in a feeding device is provided by an axle which is powered by the oscillating connecting rod.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: February 10, 1987
    Inventor: Fernando C. Echavarrio