Patents by Inventor Keitaro Harada

Keitaro Harada 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: 7204194
    Abstract: A sewing machine includes a vertical portion and a horizontal portion of an arm having at least one sewing needle mounted thereon, a bed extending in parallel to and under the horizontal portion of the arm, two first rails extending parallel to the bed in the neighborhood of the side portion of the vertical portion, first carriages adapted to slide on the first rails, and a second rail connected to the first carriages and perpendicular to the first rails, wherein the distance between the two first rails is shorter or equal to the length of the second rail. The sewing machine includes a second carriage adapted to slide on the second rail, and an embroidery frame unit mounted on the second carriage, wherein the sewing machine is capable of embroidery without being limited by the distance between the rails.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: April 17, 2007
    Assignee: Happy Industrial Corporation
    Inventor: Keitaro Harada
  • Publication number: 20060137584
    Abstract: A sewing machine comprises an arm including a vertical portion and a horizontal portion having at least one sewing needle mounted thereon, a bed extending in parallel to the horizontal portion under the horizontal portion of the arm, two first rails extending in parallel to the bed in the neighborhood of the side portion of the vertical portion of the arm, first carriages adapted to slide on the first rails, respectively, and a second rail connected to the first carriages and perpendicular to the first rails, wherein the distance between the two first rails is shorter than or equal to the length of the second rail, the sewing machine further comprising a second carriage adapted to slide on the second rail, and an embroidery frame unit mounted on the second carriage on the side portion of the second rail located far from the vertical portion of the arm, wherein the first carriages are located on one side of the second rail, and the embroidery frame unit is located on the other side of the second rail.
    Type: Application
    Filed: October 31, 2003
    Publication date: June 29, 2006
    Applicant: HAPPY INDUSTRIAL CORPORATION
    Inventor: Keitaro Harada
  • Patent number: 6742981
    Abstract: A disk (6) is horizontally rotated a half-turn by a motor (7) in a rotational direction and, then, is rotated a half-turn in an opposite rotational direction. Two servomotors (8, 9) are symmetrically disposed, on an upper surface of the disk (6), with respect to a rotating shaft of the disk (6). Driving shafts (22, 23), driven by the two servomotors (8, 9), downwardly extend through the disk (6), and move hanging members (K, M), respectively, in upward-and-downward directions. Two hanging members (K, M) are provided, at their lower ends, with clampers (32), respectively. The clampers (32) are each provided, at their bottom surfaces, with a suction pad (35), and are provided, at their upper surfaces, with pneumatic cylinders (28, 29). The pressure of the compressed air supplied to the pneumatic cylinder is adjusted by a pressure regulating device (38).
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: June 1, 2004
    Assignee: Tohoku Seiki Industries, Ltd.
    Inventors: Keitaro Harada, Masayoshi Yokoo, Shigeo Onuma, Satoshi Ueno
  • Publication number: 20030012633
    Abstract: A disk (6) is horizontally rotated a half-turn by a motor (7) in a rotational direction and, then, is rotated a half-turn in an opposite rotational direction. Two servomotors (8, 9) are symmetrically disposed, on an upper surface of the disk (6), with respect to a rotating shaft of the disk (6). Driving shafts (22, 23), driven by the two servomotors (8, 9), downwardly extend through the disk (6), and move hanging members (K, M), respectively, in upward-and-downward directions. Two hanging members (K, M) are provided, at their lower ends, with clampers (32), respectively. The clampers (32) are each provided, at their bottom surfaces, with a suction pad (35), and are provided, at their upper surfaces, with pneumatic cylinders (28, 29). The pressure of the compressed air supplied to the pneumatic cylinder is adjusted by a pressure regulating device (38).
    Type: Application
    Filed: August 19, 2002
    Publication date: January 16, 2003
    Inventors: Keitaro Harada, Masayoshi Yokoo, Shigeo Onuma, Satoshi Ueno