Cyclindrical cutter device

Claim 1

A HOLE CUTTING DEVICE COMPRISED OF A PAIR OF NESTED CYLINDERS, EACH HAVING A COMMON OPEN END DEFINING CONCENTRIC EDGES, A PLURALITY OF ABRASIVE OR CUTTING ELEMENTS SECURED ON SAID EDGES SPANNING THE SPACE BETWEEN THE SAID WALLS OF SAID NESTED CYLINDERS, LEAVING VOIDS THEREBETWEEN AND PROJECTING SLIGHTLY LATERALLY BEYOND THE OUTER EDGE OF THE OUTERMOST CYLINDER, SAID NESTED CYLINDERS DEFINING AN ANNULAR CHAMBER FORMED BY THE SLIGHTLYSPACED-APART RELATIONSHIP, THE OUTERMOST OF SAID CYLINDERS HAVING A TOP WALL OPPOSITE THE SAID EDGE BEARING THE ABRASIVE ELEMENTS, SAID TOP WALL HAVING A CENTRAL APERTURE THEREIN, SAID INNERMOST OPEN-ENDED CYLINDER HAVING A TOP WALL SPACED FROM THE TOP WALL OF SAID OUTERMOST CYLINDER, SAID LATTER MENTIONED TOP WALL OF THE INNERMOST CYLINDER HAVING SECURED THERETO A CENTRAL SHAFT PROJECTING THROUGH THE HOLE IN THE TOP WALL OF THE OUTERMOST CYLINDER FOR ROTATIONAL DRIVE, SAID CYLINDRICAL MEMBERS BEING SECURED TOGETHER WHEREBY A FORCE APPLIED TO SUCH SHAFT WILL ROTATE BOTH MEMBERS, AND AT LEAST ONE BAFFLE ELEMENT CONNECTING THE UPPER WALLS OF SAID CONTAINERS BUT TERMINATING SHORT OF THE SHAFT, WHEREBY A COOLING FLUID INTRODUCED PROXIMATE SAID SHAFT AND TOP WALLS WILL FLOW OUTWARDLY BETWEEN SAID TOP WALLS AND DOWNWARDLY INTO SAID ANNULAR CHAMBER AND THROUGH THE VOIDS BETWEEN THE ABRASIVE ELEMENTS INTO CONTACT WITH THE WORK PIECE.