Patents Assigned to Sagami Tsushin Kogyo Co., Ltd.
  • Patent number: 4906014
    Abstract: A handtruck for use in carrying a load, comprises springs installed on a frame, a connection shaft received rotatably in bearings mounted on the opposite end portion of the springs and substantially parallel with the lateral extend of the frame, a support member for supporting a first pair of wheels which is fixed to the connection shaft, and another support member for supporting a second pair of wheels which is also firmly fixed to the same. A rotation shaft is rotatably mounted on the support member for supporting the second pair of wheels in order to cause the second wheels to rotate around the shaft axis approximately normal to the axis of the connection shaft.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: March 6, 1990
    Assignee: Sagami Tsushin Kogyo Co., Ltd.
    Inventor: Takashi Nanzai