Metal deforming – With cutting
Reexamination Certificate
2005-04-12
2005-04-12
Crane, Daniel C. (Department: 3725)
Metal deforming
With cutting
C072S379200, C428S136000
Reexamination Certificate
active
06877349
ABSTRACT:
A method for precision bending of a sheet of material (41, 241, 341, 441) along a bend line (45, 245, 345, 445) and the resulting sheet are disclosed. A method includes a step of forming longitudinally extending slits (43, 243, 343, 443) through the sheet of material in axially spaced relation to produce precise bending of the sheet (41, 241, 341, 441) along the bend line (45, 245, 345, 445) with edges (257, 457) engaged and supported on faces (255, 455) of the sheet material on opposite sides of the slits. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line (45, 245, 345, 445). Several slit embodiments (43, 243, 343, 443) suitable for producing edge-to-face engagement support and precise bending are disclosed, as is the use of the slit sheets to enhance various fabrication techniques.
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Durney Max W.
Pendley Alan D.
Crane Daniel C.
Dorsey & Whitney LLP
Industrial Origami, LLC
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