.~ Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) {10}
441
.~.~ Inserted portion cuts into or deforms cavity
DEFINITION
Classification: 81/441
Inserted portion cuts into or deforms cavity:
(under subclass 436) Wrench or screwdriver wherein the cavity-engaging and strain-exerting portion is constructed to either (a) form the cavity in the surface of the work which is to be rotated (e.g., drills hole into screw with broken head and then removes screw), (b) enlarge the cavity in the surface of the work (e.g., has sharp points which bite into surface of cavity), or (c) deform the shape of the cavity
(e.g., bends vanes in cavity and interlocks therewith).
