Patent ID: 8777528

Claim:
An outside diameter shaft reducer, comprising: a cutter head portion having a generally cylindrical shape, first and second ends and a central, head lumen extending from said first end to said second end; wherein a circumferential bevel is provided at said first end and eight cutting teeth are provided at said second end, said cutting teeth being evenly spaced around an exterior circumference of said second end; wherein each tooth has a cutting surface facing away from said first end and extending from an outside diameter of said cutter head to an inside diameter of said lumen; said cutting surface being divided into two steps: a first step near the head lumen and a second step near the exterior circumference of said cutter head wherein said first step is closer to said first end than said second step; wherein the first step extends in a diametrical direction from the inner diameter of the head lumen approximately half of the distance to the exterior circumference of said cutter head; one or more threaded set screw holes formed in said cutter head portion and extending from said exterior circumference toward said head lumen; a main body portion having a generally cylindrical shape, first and second ends and a body lumen extending from said first end to near said second end; said body lumen having an inner diameter slightly smaller than the exterior diameter of the cutter head portion; a square hole formed in said second end; two diametrically opposed windows formed in said main body portion between an exterior circumference of said main body portion and said body lumen; said windows being formed closer to said first end than said second end; said windows having a generally rectangular shape; one or more threaded set screw holes formed in said main body portion and extending from said exterior circumference toward said body lumen; said one or more threaded set screw holes being formed closer to said second end than said first end; a plurality of set screws for threaded engagement with said threaded set screw holes of said cutter head portion and said threaded set screw holes of said main body portion to securely hold said cutter head portion inside the body lumen of the main body portion; whereby a drive extension of a hand-held drill may be placed into said rectangular hole to engage said main body portion so that said hand-held drill may cause a rotation of said main body portion and said cutter head and such that said cutting teeth are caused to cut an end surface of a rod work piece received in said body lumen of said main body portion to reduce the exterior diameter of the rod work piece; and wherein the cutter head portion is held within said main body portion, according to placement of said set screws, such that said cutting teeth are adjacent said two windows such that cut pieces of the rod work piece may be expelled through said windows to an exterior of said main body portion.