07374810 is referenced by 14 patents and cites 68 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
10/952357
Publication Number
7374810 (B2)
Application Date
September 27, 2004
Publication Date
May 20, 2008
Inventor
Alan D Pendley
Petaluma
CA, US
Max W Durney
San Francisco
CA, US
Agent
Victor E Johnson
David J Brezner
Morgan Lewis & Bockius
Assignee
Industrial Origami
CA, US
IPC
B32B 3/24
View Original Source