Conversion Of Foot-treadle Driven Machine Patents (Class 112/217.4)
  • Foot controller connection error detection device for sewing machines
    Patent number: 7007619
    Abstract: A foot controller connection error detection device of the present invention includes a foot controller to output a start/stop instruction and a rotation speed instruction of a sewing machine motor to a control unit to control the sewing machine motor, a plug to disconnectably connect the foot controller to the control unit and a contact failure detection unit to detect a contact failure of the connector between the plug and the control unit.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: March 7, 2006
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Eiichi Hamajima