Measuring and testing – Dynamometers – Responsive to force
Reexamination Certificate
2007-07-31
2008-12-09
Thompson, Jewel (Department: 2855)
Measuring and testing
Dynamometers
Responsive to force
Reexamination Certificate
active
07461564
ABSTRACT:
Disclosed is a method of proof testing a sheet of brittle material such as a glass or glass-ceramic based material. The method comprises bending the glass sheet over at least one arcuate member to detect sheets having a strength greater than a predetermined value. The method includes imparting a bend to the sheet and producing relative motion between the sheet and the bend such that the bend traverses the sheet, and wherein tensile stress induced in a surface of the sheet by the bend corresponds to the predetermined strength value. An apparatus for performing the proof testing is also disclosed.
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Able Kevin M.
Corning Incorporated
Thompson Jewel
LandOfFree
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