Patent ID: 8347872
Filing Date: 2013-01-08
Classification: B28D

Abstract:
1. A battery power concrete saw system comprising: a saw including a frame having a pair of rear wheels and a pair of front wheels for facilitating movement of the saw to different locations for use and for movement during use performing a cutting operation; an alternating current electric motor mounted by the frame; a pair of saw arbors respectively mounted on the frame for rotation on opposite lateral sides of the frame forward of the pair of front wheels, and the saw arbors having a rotational connection to the electric motor to provide rotational driving thereof; an actuator for moving the front wheels upwardly and downwardly with respect to the frame to pivot the frame about the rear wheels between an upper idle position and a lower use position that permits cutting of concrete with a saw blade mounted on one of the arbors; a cart including a lower support for mounting a lithium based battery pack having a plurality of batteries connected in series to provide at least 80 volts for powering the saw, an upwardly extending frame including an upper handle end, and a pair of wheels for moving the cart with the frame inclined by an operator holding the handle end of the frame; an inverter; an electrical cord for connecting the lithium based battery pack and the alternating current electric motor through the inverter to power the saw for use which is facilitated in small spaces by the remote location of the battery pack from the saw; and a battery charger mounted by the cart and having another electrical cord for recharging the battery pack from an AC electrical outlet.