Surface truss planer

Abstract

An improved mechanism for grinding surfaces flat is presented, involving a precision grinder with grinding heads that are adjustable in a vertical dimension controlled by a support structure on wheels. The support structure has an adjustable wheelbase that allows sinusoidal flaws in a surface to be ground down in a controllable way. The device can be used in coordination with floor flatness measurement devices to grind concrete floors, and other horizontal surfaces.

What is claimed is: 
     
         1 . a truss planer, comprised of articulating wheels supporting a truss frame,
 the truss frame supporting a rectangular plenum plate, a cutting motor, and a drive train under the control of a control unit,   the cutting motor possessing a vertical drive shaft, the drive shaft of the cutting motor connected to cutting heads,   the drive shaft of the cutting motor passing through the plenum plate, the plenum plate possessing bearings around the drive shaft of the cutting motor,   the truss frame also possessing control arms and a control wheel, the control arms connecting the truss frame to and supporting the plenum plate, the adjustment wheel possessing a shaft passing horizontally through the truss frame and passing through the control arms,   the adjustment shaft rotatable around its axis by means of the control wheel at one end, the combination of control wheel and control arms permitting the adjustment and positioning of the cutting heads left or right, fore or aft,   the articulating wheels connected to the truss frame adjustably, allowing movement of the articulating wheels along the long axis of the truss frame,   The articulating wheels adjustable a predetermined amount to affect the reshaping of the surface being planed,   the articulating wheels capable of following a set of rails laid over the surface to be ground,   the drive train a motor connected to one articulating wheel in such a manner as to use the articulating wheel to propel the truss planer apparatus along rails or a surface to be planed.