Patent ID: 7703364
Filing Date: 2010-04-27
Classification: B26F,Y10T

Abstract:
1. A paper punch device for cutting narrow rectangular openings in a workpiece to hold diagonally opposite corners of a card, said paper punch device comprising: a) a male plate generally rectangular in shape and having a hinge edge, said male plate carrying at least one pair of cutting projections, said cutting projections of each said pair positioned on said male plate in a diagonal alignment with respect to said hinge edge, wherein each said cutting projection has a substantially rectangular shape and a cutting edge that forms a closed loop around the periphery of said rectangular-shaped projection, and wherein the long sides of the rectangular-shaped projections of each said pair are substantially parallel to one another; and b) a female plate approximately matching in size said male plate, and moveably hinged to said hinge edge of said male plate by a hinge assembly, said hinge assembly defining a hinge axis substantially parallel to said hinge edge, said female plate being pierced through with rectangular slots, each of said slots being so positioned as to correspondingly face one of said cutting projections in said male plate when said punch device is closed, said slots being the same shape but slightly larger than said cutting projections thereby ensuring that said cutting projections penetrate said slots when said device is closed, said hinge assembly allowing said male plate to be manually rotated about said hinge axis from an open position to a closed position, against said female plate, such that said cutting projections penetrate said slots, said hinge assembly further being rotatable to an open position wherein said hinge edges are freely separable from one another to disassemble the male and female plates from one another, whereby said punch device can be rotated to said closed position to cut said rectangular openings in said workpiece such that said card can be held in place on said workpiece by inserting the corners of said cards into said rectangular openings.