Patent ID: 7669630
Filing Date: 2010-03-02
Classification: B26D,B26F,B42F,Y10T

Abstract:
1. A hole punch apparatus having at least one stack of reinforcement rings for placement of one such ring around each punched hole during creation of the punched hole, the apparatus comprising: a punch shaft terminating in a sharp-edge punch face for generating a hole by piercing a sheet of paper in response to an applied force to move said shaft into compressive engagement with said sheet; a compression disk affixed to said shaft at a location displaced from said punch face, said stack of reinforcement rings being positioned on said shaft between said compression disk and said punch face, the lowermost reinforcement ring of said stack being forced into compressive engagement with said sheet around said hole by a force applied by said compression disk to said stack after said punch face has penetrated said sheet and traveled through said hole; each said reinforcement ring in said stack having an adhesive coating on a surface that directly engages said sheet for adhering to said sheet upon withdrawal of said punch shaft; further comprising a replacement ring stack mounted on a frangible axle in a cassette device having an annular well for receiving said stack; wherein said cassette is configured for placement beneath said punch face with said frangible axle aligned with said punch shaft for automatic removal of said axle and mounting of said replacement ring stack onto said punch shaft by activation of said apparatus.