Patent ID: 7066627

Claim:
A laser light beam guiding device on a stone cutter comprising: a oblong seat having a pair of first through holes respectively formed adjacent two ends for securing said seat to a front top of a blade guard of a stone cutter which having saw blade and a sliding platform on top, a lug projected outward from a center of one side of said seat having an oblong through hole in a lateral side and a pair of concaves formed in opposing inner surfaces for movably disposing a pivot block therein which includes a vertical through hole engaged with the oblong through hole of said lug and rotatably secured by a first bolt and a pair of first nuts, a horizontal slot in a bottom thereof; a tubular main body having a pair of fin plates respectively projected downward from opposing peripheries each including a second through hole adjacent free end engaged with the horizontal slot of said pivot block and rotatably secured by a second bolt and pair of second nuts, a pair of coupling guides in opposing top of rear periphery, a pair of coupling slots in opposing side of rear end, a retaining recess in an underside and a third through hole in a top; a battery chamber inserted into said main body having a conductive plate on rear end, a switch rod on a top protruded out of said main body via the third through hole and engaged with a button thereon, a positioning ring at front end and a hook on an underside engaged within the retaining recess of said main body; a battery disposed into the battery chamber of said main body; a tubular sleeve sleeved onto rear portion of said main body having a pair of sliding plates on front end engaged with the pair of guides of said main body and a pair of projections on opposing peripheries engaged within the coupling slot of said main body; a laser projector having a coupling ring on rear end rotatably engaged with the positioning ring of said battery chamber; whereby, press the switch button, said laser projector will emit light beam on a working piece to accurately deciding a cutting line for said saw blade to follow up.