Patents Assigned to Laserline, Inc.
  • Two-axis levelling instrument with a single pendulum for projecting a level laser beam
    Patent number: 5108177
    Abstract: A simple structure for providing a level laser beam. A pendulum is suspended by at least two suspension supports along the line parallel to a path of a laser beam emitted from a laser. An optical element is mounted on the pendulum to intercept the laser beam and reflect it along a path orthogonal to the first path. The pendulum will maintain the optical element in a vertical alignment, and accordingly the beam reflected off the optical element will be horizontal.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: April 28, 1992
    Assignee: Laserline, Inc.
    Inventor: Michael A. Middleton