Patent ID: 7628053
Filing Date: 2009-12-08
Classification: B21D,Y10T

Abstract:
1. A hold-down device for securing a graphic arts die or die support plate to a chase having an outer surface and provided with a series of cavities that are generally round in cross-section and each having a shoulder facing away from the outer surface of the chase, said device comprising: a main body unit having a pair of opposed anchor members having generally semi-circular outer faces being configured to be received in a respective cavity, with one set of ends of the members in closer relationship to said outer surface of the chase than the other set of ends of the members, a fulcrum component between the anchor members of the main body unit and having a fulcrum section engaging opposed inner surfaces of the anchor members intermediate opposed ends of the members, said members being pivotal about the fulcrum section with the opposite ends of the members being movable toward and away from one another, a resilient element interconnecting the members and positioned in closer relationship to said other set of ends of the members than said one set of ends of the members, said element being operable to bias said other set of ends toward one another and said one set of ends of the members away from one another, said one set of ends of the members being engageable with the shoulder to prevent withdrawal of the device from a respective cavity until said one set of ends of the members are moved out of engagement with said shoulder, said fulcrum component having a central threaded passage communicating with the outer surface of the chase; and a fastener removably threaded into the passage of the component, said fastener having an enlarged section outboard of the outer surface of the chase that is adapted to engage and assist in holding a graphic arts die or die support plate on the chase.