Method and apparatus for securing a sawblade

An apparatus for retaining a saw blade set on an arbor, the apparatus comprising:

• a dado washer having an inner cylindrical surface at an inner diameter;
• a dado nut having a head portion adapted to engage with a tool, the head portion of the dado nut having a dado nut head size associated therewith;
• a shank portion of the dado nut extending longitudinally from the head portion wherein a portion of the shank portion of the dado nut operably engages with the surface at the inner diameter of the dado washer;
• and
• a lockring operably engaging with the shank portion of the dado nut and with the dado washer;
• wherein the dado washer has a proximal annular surface and at least two distal annular surfaces, the proximal annular surface rotatably engaging with the dado nut head portion, a first of the at least two distal annular surfaces adapted to engage with the saw blade set;
• wherein the first of the least two distal annular surfaces defines a dado washer furthest distal annulus, a second of the at least two distal annular surfaces being interior to the first of the least two distal annular surfaces and providing clearance to install the lockring, the second of the of the at least two distal annular surfaces engaging with the lockring, the dado washer furthest distance annulus transitioning to a mid-distal cylindrical surface, the mid-distal cylindrical surface terminating at a mid-distal annulus, the mid-distal annulus being distinct from the second of the at least two distal annular surfaces, the mid-distal cylindrical surface defining a mid-distal diameter, the mid-distal annulus transitioning to a lockring clearance cylindrical surface, the lockring clearance cylindrical surface transitioning to the second of the at least two distal annular surfaces, the lockring clearance cylindrical surface defining a lockring clearance diameter, the mid-distal diameter and the lockring clearance diameter each being larger than the inner diameter of the dado washer, the mid-distal diameter being greater than the dado nut head size, the dado washer thereby configured to translate axial force from the dado nut head toward a perimeter of the dado washer;
• wherein the head portion of the dado nut head defines a proximal dado nut head surface, the dado nut, including the shank portion thereof, defining a dado nut length;
• and
• wherein the dado nut and the dado washer together define a nut-washer assembly, a distance from the first distal annular surface to the proximal dado nut head surface defines an assembly length of the nut-washer assembly, the assembly length of the nut-washer assembly being greater than the dado nut length;
• wherein the dado nut is adapted to be threadably engageable with the arbor;
• and
• wherein the dado nut is substantially coaxial with the dado washer.