Patents Assigned to Shunichi Hishikawa
  • Patent number: 4006449
    Abstract: An information detector for a tire wheel includes a rotating coil extending about the circumference of the wheel, and two stationary coils inductively coupled to one another through the rotating coil. A parameter of the rotating coil is modified by tire pressure or the like to affect the coupling between the stationary coils. In one embodiment, the resistance of the rotating coil is modified and in another embodiment, the inductance of the rotating coils is modified.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: February 1, 1977
    Assignees: Momoki Sumi, Shunichi Hishikawa
    Inventor: Momoki Sumi