Patent ID: 8181559
Filing Date: 2012-05-22
Classification: B27B,Y10T

Abstract:
1. An assembly including a rolling plate assembly and a portable rotary power saw having a saw blade and used to cut a workpiece having a work surface and a transverse surface, the rolling plate assembly comprising: a. a one piece base molded out of a single piece of fiber enriched plastic having a front housing member and a rear housing member, the two housing members interconnected by a first longitudinal sidewall and a parallel oppositely disposed second longitudinal sidewall, a horizontal plate section and a saw blade penetration slot extending through the horizontal plate section; b. each housing member having a pair of oppositely disposed wheel bearing seats, the front housing member rotatably supporting a front wheel having an interior wheel shaft inserted into a pair of wheel bearings at either end, the front wheel rotatably and removably supported in the front wheel housing by manual pressing insertion of a wheel bearing into a respective one of the bearing seats permitted by the flexibility of said fiber enriched plastic so that the front wheel is quickly removable and replaceable because the wheel is retained in the bearing seats, the front wheel extending out of the leading edge of the front housing member in which it is rotatably retained to enable a power saw to be lifted off a surface of a workpiece and to facilitate a smooth motion of a power saw on a workpiece, the rear housing member rotatably supporting a rear wheel having an interior wheel shaft terminating in a pair of wheel bearings at either end, the rear wheel rotatably and removably supported in the rear wheel housing by insertion of a wheel bearing into a respective one of the bearing seats, the rear wheel extending toward the rear edge of the rear housing member in which it is rotatably retained; c. a first transverse slot extending through the first longitudinal sidewall, a second transverse slot extending through the second longitudinal sidewall, the two transverse slots parallel to each other and aligned with each other; d. a cutting guide including an elongated flat cutting guide frame having a first open free end and an oppositely disposed second end supporting a cutting guide frame assembly affixed below the second end of the cutting guide frame, the cutting guide frame assembly comprising a transverse wheel housing unit retaining a pair of spaced apart rotatable wheels, the housing having a top wall and a bottom wall, each rotatable wheel each having an opening extending through the wheel to respectively receive a rotating pin which extends through the opening in the wheel and extends to the bottom wall of the housing and the top wall of the housing, each wheel rotating in a fixed orientation between the top wall and the bottom wall of the housing; e. a cutting guide fix bolt insert located adjacent the second longitudinal sidewall and above the horizontal plate which in turn is located above the second transverse slot, a cutting guide fix bolt extending through the cutting guide fix bolt insert and into the second transverse slot; f. the elongated flat cutting guide frame inserted through the first transverse slot and through the second transverse slot so that the free end of the cutting guide frame extends out of the first transverse slot, the cutting guide fix bolt tightened so that the pair of spaced apart rotatable wheels of the cutting guide frame assembly are positioned below the horizontal plate section, below the saw blade penetration slot and against a transverse surface of a workpiece to add stability to the base so that the pair of spaced apart transverse wheels rotate in a fixed given position against the transverse surface and are at a given distance from the location of the cut to be made with a saw blade, the cutting guide frame assembly oriented perpendicular to a work surface; and g. the assembly further comprises a rotary power saw used in conjunction with the rolling plate assembly and supported on the rolling plate assembly so that the saw blade extends through the saw blade penetration slot, the wheels of the rolling plate assembly placed on a work surface of a workpiece and the cutting guide inserted through the first and second transverse slots and retained in a desired location by the cutting guide fix bolt which requires the two guide wheels to rest against a transverse surface of the workpiece and rotate in place against the transverse surface of the workpiece so that a cut from the saw blade into the work surface of the workpiece will be made in straight line.