Patents Assigned to Sopha Bodewes-Tunhau
  • Bubble inclination gauge including a central shield for light-emitting and light-detecting means
    Patent number: 4956922
    Abstract: Inclination gauge having a reservoir filled with liquid and containing a gas bubble. The position of the gas bubble is detected by light detecting devices by which light going through the completely filled tube has a different convergent nature than light going through the tube partially filled with liquid and partially filled with gas. On the centerline of the light emitting and light detecting devices, between the reservoir and the light detecting devices, a shield is provided.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: September 18, 1990
    Assignee: Sopha Bodewes-Tunhau
    Inventor: Johannes W. M. Bodewes