06877349 is referenced by 25 patents and cites 62 patents.

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.

Title
Method for precision bending of sheet of materials, slit sheets fabrication process
Application Number
10/256870
Publication Number
6877349 (B2)
Application Date
September 26, 2002
Publication Date
April 12, 2005
Inventor
Alan D Pendley
Petaluma
CA, US
Max W Durney
San Francisco
CA, US
Agent
Dorsey & Whitney
Assignee
Industrial Origami
CA, US
IPC
B21D 028/00
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