Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate
2011-08-23
2011-08-23
Chang, Rick K (Department: 3726)
Metal working
Method of mechanical manufacture
Structural member making
C029S897350, C072S379200, C072S380000, C072S381000
Reexamination Certificate
active
08001689
ABSTRACT:
The present invention relates to a process for forming a variable gauge metal sheet into a desired shape, said process comprising: providing a variable gauge metal sheet having a first surface and a second surface, the metal sheet having a thickness measured at any point on the metal sheet as the distance between the first surface and the second surface, the thickness of the metal sheet being different over a first portion of the sheet than over a second portion of the sheet, and forming said metal sheet into a first desired shape by bending the metal sheet about a first fold line, said first fold line extending through both the first portion and the second portion, to bring segments of the first surface of the metal sheet on either side of the first fold line into increased opposition with each other.
REFERENCES:
patent: 3209432 (1965-10-01), Cape
patent: 5239852 (1993-08-01), Roper
Michael Tolinski, Bend Blemish-Free Appliance Exteriors, Forming & Fabricating, Apr. 2003 vol. 10 No. 4.
Lindgren Bo Axel
Wong Wayne W. C.
Chang Rick K
Riches McKenzie & Herbert LLP
Van-Rob Inc.
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