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US 4,233,873 AGranted
Permanent magnetic hold down for steel rule dies
AssigneeHewlett-Packard Company
InventorKenneth C. Jessen
Life of this patent
Estimating the term…
Abstract
Basic steel rule dies are provided which can be combined to produce a variety of die cut patterns. Each basic die contains sufficient magnetic material to hold it in place on a steel chase during the cutting operation.
Claims3
A steel rule die assembly for attachment to a steel chase, the steel rule die assembly comprising:
- a generally flat non-magnetic die board member having top and bottom surfaces;
- a steel rule blade embedded in the die board member, the steel rule blade being embedded perpendicular to the top surface of the die board member such that a cutting edge of the steel rule blade partially extends from the top surface of the die board member to define a die cut pattern;
- and
- a permanent magnet member fixedly attached to the die board member for holding the steel rule die assembly in a predetermined position on the steel chase.
1 more element
Dependencies are inferred from the claim text.