Patent ID: 8002773

Claim:
An assembly, comprising: a body having a top surface, a bottom surface, and a polygonal drive surface interposed between said top surface and said bottom surface, said body defining (i) a first passageway extending from said top surface to said bottom surface, (ii) a second passageway extending from said polygonal drive surface to said first passageway, and (iii) a third passageway extending from said polygonal drive surface to one of said first passageway and said second passageway; a plunger having channel extending therethrough that defines an interior surface having a threaded portion, said plunger being movable within said second passageway between (i) a first plunger position in which said threaded portion is located at a first location with respect to said body, and (ii) a second plunger position in which said threaded portion is located at a second location with respect to said body; a biasing member configured to bias said plunger toward said first plunger position, and a set screw that is movable within said third passageway between (i) a first set screw position in which said set screw inhibits movement of said plunger within said second passageway, and (ii) a second set screw position in which said set screw allows movement of said plunger within said second passageway.