Patent ID: 6981494

Claim:
A motorized concrete saw having a telescoping guide, which includes: a movable base, a cutting blade, means operably connected with said base for driving said blade such that when said base is disposed on a concrete surface, said cutting blade is enabled to cut a groove along an intended path in the concrete surface; a telescoping guide connected to said saw in a manner to extend outward from a front end of said saw, said guide having a series of interconnected sleeves, wherein a first sleeve is of a given internal diameter and includes a first end and a second end having a radially inwardly extending lip of a given diameter and a second sleeve having an intermediate portion of a given outer diameter less than the inner diameter of the radially inwardly extending lip of the first sleeve and includes a first end less than the inner diameter of the first sleeve and movably disposed adjacent thereto and greater than the diameter of the radially inwardly extending lip of the first sleeve to preclude movement thereby and having a second end having a radially inwardly extending lip, a third sleeve having an intermediate portion of a given outer diameter less than the inner diameter of the radially inwardly extending lip of the second sleeve and includes a first end less than the inner diameter of the second sleeve and movably disposed adjacent thereto and greater than the diameter of the radially inwardly extending lip of the second sleeve to preclude movement thereby and having a second end; a wheel rotatably connected to the second end of the third sleeve, wherein said wheel is of a diameter greater than the diameter of the radially inwardly extending lip of the second sleeve to preclude movement thereby; a mounting plate hingedly connected to the first sleeve for connecting to said saw; and whereupon operation of said saw and said telescoping arm is an extended manner in front of said saw and said wheel is brought into contact with an opposing force, said wheel imparts a force on said arm to cause said third sleeve to slidably retract within said second sleeve and said second sleeve to slidably retract within said first sleeve.