Invention Grant
- Patent Title: Controlled flattening of sheet materials
- Patent Title (中): 板材受控扁平化
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Application No.: US13841483Application Date: 2013-03-15
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Publication No.: US08959967B1Publication Date: 2015-02-24
- Inventor: William Hamburgen , Michael John Bliss
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Brake Hughes Bellermann LLP
- Main IPC: B21D37/10
- IPC: B21D37/10 ; B21D1/00
Abstract:
Controlling a flatness of a first surface of a sheet material can include: (a) determining a first surface contour of the first surface of the sheet; (b) applying compressive stresses to one or more portions of the first surface of the sheet after the determination of the first surface contour of the sheet; (c) annealing compressive stresses in one or more portions of the first surface of the sheet after the determination of the first surface contour of the sheet; (d) determining a second surface contour of the first surface of the sheet after the compressive stresses have been applied to, and annealed from, the sheet; (e) comparing the second surface contour to a threshold flatness; and (f) performing (b)-(e) one or more times until the determined second surface contour is less than the threshold flatness.
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