Contact Restrained Until Spring Is Charged (e.g., Detent) Patents (Class 200/415)
  • Semiconductor accelerometer switch
    Patent number: 6078016
    Abstract: A semiconductor accelerometer switch having a fixed portion including a first control electrode and a movable portion including a movable body. By applying a voltage between the first control electrode and an electrode on the movable body, electrostatic attraction holds the movable body in an initial position. The movable body is displaced when acceleration having a magnitude in a direction acts on the switch. The threshold of acceleration to be detected and general-purpose properties of the accelerometer switch are easily adjusted.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: June 20, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Eiji Yoshikawa, Masahiro Tsugai