Appeal No. 00-0833
Application 08/985,676
3. Claims 1-20 have been rejected as being unpatentable
under 35 U.S.C. § 103 over Kanduth et al. (Kanduth), U.S.
Patent 5,757,473, issued May 26, 1998, based on application
08/748,956, filed November 13, 1996.
The invention
4. The disclosed invention pertains to a method of
using a strain gauge before and after applying a load to an
object surface for determining the strain on the object.
5. The disclosed invention includes 1) marking the
object with a known pattern; 2) magnifying and imaging the
known pattern; 3) recording a first image; 4) applying a load
to the object surface; 5) again, magnifying and imaging the
known pattern; 6) recording a second image; and 7) determining
the strain by comparing the recordings of the first and second
images.
6. Independent claim 17 is representative of the claims
and is as follows:
A method of using a digital imaging strain gauge
comprising the steps of:
creating a known mark pattern on an object surface;
positioning an image sensing device over the mark pattern
a predetermined distance therefrom;
2
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