Appeal No. 1997-0061
Application 08/246,140
The Examiner's calculated range of from 23.395 mm /kg to3
72.15 mm /kg is erroneously based on the following equation:3
K = t · B · H · W/L2
3 2
For example, 23.394 mm -kg =(0.762)(12.7) (8.27)(1.9)/82.55.
Note that the units do not agree with the claimed units for
K. Before considering what the numbers are using the
correct equation, it is necessary to make two observations.
First, we find that only the 0.50 inch minimum width
(breadth) in Shrader can be fairly used to calculate to
spring shape factor because that is the width of the spring
portion and is consistent with the definition of breadth in
Appellants' figure 5. The 0.875 inch width is only used on
portion 33 where the spring is attached to the plate 36.
Second, we agree with Appellants' argument (RBr3) that
the height should be calculated with tan 2 instead of sin 2.
Using tan 2 is to the Examiner's benefit. We calculate the
height to be (3.25-1.375 inches)tan 10E=0.331 inches=8.40
mm. It is not known how the Examiner arrived at the values
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Last modified: November 3, 2007