Abstract: A cutting toolholder assembly for holding a cutting tool used in a material removal operation. The assembly comprises a locking component which contains a bore with at least one recess therein. The assembly also includes a tool holding component with a shank whereby the bore receives the shank. The shank contains a compartment with a locking assembly within the compartment. The locking assembly includes at least one locking member and a positioner assembly that selectively positions the locking member into engagement with its corresponding recess. The recess corresponds to the shape of the locking member such that when the locking member engages the recess, the recess restrains the locking member so that there is essentially no movement between the holder component and the locking component during a material removal operation.

Abstract: An hydraulic chip breaking tool holder is provided with a fluid coupler and seal assembly for transferring high pressure, chip breaking fluid from an outlet opening of the main body of the tool holder to an inlet opening of an attached nozzle cap. A coupler in the form of a dowel is interconnected between the openings. At least one of the openings includes a seal cavity having an outer wall. The dowel is inserted through the seal cavity. A deformable pressure sensitive seal is disposed within the seal cavity and extends around the dowel. The pressure of fluid passing through the tool holder causes the seal to radially expand and seal the area between the dowel and the outer wall of the seal cavity, thereby preventing fluid from escaping pst the seal.