Paper punch

摘要

A paper punch for punching one or more holes into one or more sheets is disclosed. The paper punch includes a pair of top and bottom plates, formed of a polymer and hingelike mounted to one another along respective straight edges about an off-center pivot point located below the surface of the bottom plate. The off-center hingelike mounting assures an equal tolerance in entry as the punch head enters its punch hole. The hingelike mounting further includes integral mounting members designed to secure the paper punch about rings of a loose-leaf binder. The hingelike mounting includes male members formed on one of the pair of plates designed to cooperate with female members formed on the other plate. One of the pair of plates is formed with a reentrant segment to facilitate the angular separation of said pair of plates from one another preparatory to insertion of a sheet therebetween. The pivot is off-centered by a distance equal to the height of a male punching member.