Patent ID: 8573707
Filing Date: 2013-11-05
Classification: E21C

Abstract:
1. A tool assembly for mounting a cutting tool, the tool assembly comprising: a block comprising a holder portion having a front face, a rear face and a longitudinal bore extending therethrough from the front face to the rear face, the longitudinal bore disposed about a central longitudinal axis; a retainer sleeve removably received in the bore of the holder and disposed about the central longitudinal axis, the retainer sleeve defining a longitudinal slot that extends from an axial forward end to an axial rearward end of the retainer sleeve, the retainer sleeve further defining at least one retention groove adjacent the axial forward end thereof wherein the at least one retention groove is enclosed on all sides; and a washer disposed about the central longitudinal axis and removably attached to the retainer sleeve, the washer having a forward surface, a rearward surface and an interior surface that define a central opening, wherein the interior surface includes: