Patents Examined by David M. Ruddy
  • Tissue transmitted light sensor
    Patent number: 5666952
    Abstract: A supporting shaft stands on an external auditory canal arm holding an LED. An attaching portion holding a PD is rotatably connected to one end of a holding arm. A column having a through hole 11b into which the supporting shaft is slidably inserted is fixed to the other end of the holding arm. The external auditory canal arm and the holding arm are connected to each other by a coil spring.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: September 16, 1997
    Assignee: Nihon Kohden Corporation
    Inventors: Masayoshi Fuse, Takuo Aoyagi