Patents by Inventor Tsutomu Makihara

Tsutomu Makihara 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 with a built-in driving motor
    Patent number: 5125354
    Abstract: A motor for driving a sewing machine is mounted in a machine frame of the sewing machine. A motor shaft of the motor is coaxially connected to a main shaft of the sewing machine by means of a coupling. The motor shaft is supported in a housing of the motor by means of a bearing provided on one side of the motor. On the other side of the motor, the coupling joining the motor shaft and the main shaft is supported by a bearing mounted in a frame arm of the sewing machine.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: June 30, 1992
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshio Hayashi, Tsutomu Makihara
  • Sewing machine with a cloth-edge detector
    Patent number: 4924790
    Abstract: A sewing machine with a cloth-edge detector has a light source for casting light on a sensing point on a cloth, and a light receiver for generating an intensity signal according to the intensity of the received light. Before sewing, a reference signal is set at an average of two intensity signals that are gauged before and after a cloth edge. The cloth edge can be detected by comparing the intensity signal from the light receiver with the reference signal.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: May 15, 1990
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Ikuzo Kondo, Tsutomu Makihara