×

Pressure sensor and temperature sensor

  • US 5,499,535 A
  • Filed: 05/11/1995
  • Issued: 03/19/1996
  • Est. Priority Date: 11/19/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A pressure sensor comprising:

  • a substrate having a movable unit which is displaceable in response to an applied force;

    an electron emission unit having a cathode for emitting electrons in accordance with an applied potential;

    an electron absorption unit having an anode for capturing electrons emitted from said cathode, said electron emission unit and said electron absorption unit being formed on a surface of said substrate;

    said movable unit comprising a diaphragm formed by thinning said substrate at a location between said electron emission unit and said electron absorption unit, the diaphragm being deformable by pressure in an introduction port opening to the diaphragm;

    said diaphragm functioning as a control means for controlling the electron capturing efficiency of said anode with respect to electrons emitted from said cathode, and being displacable to block an electron path from said cathode to said anode, thereby controlling said electron capturing efficiency.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×