Appeal 2006-2853
Application 10/145,933
1. An apparatus for determining when to shift a bicycle chain from a
first sprocket having a first number of teeth to a second sprocket having a
second number of teeth, comprising:
a memory for storing a reference value; and
a processor that determines a shift value corresponding to a shift
speed for shifting the chain from the first sprocket to the second sprocket by
multiplying the reference value by one of the first number of teeth and the
second number of teeth and dividing by the other one of the first number of
teeth and the second number of teeth.
THE REFERENCE
Browning US 5,261,858 Nov. 16, 1993
THE REJECTIONS
Claims 1-5, 10, 13, 22-25 and 34 stand rejected under
35 U.S.C. § 102(b) as being anticipated by Browning.1
OPINION
We reverse the aforementioned rejection.
The portion of Browning relied upon by the Examiner is column 9,
line 15 to column 10, line 26 (Answer 3). In that portion of Browning, a
bicycle’s “true gear” is obtained from a table showing, for each gear, either
the number of crank signals generated during 5 hub signals (Table 5), or an
index based upon that number of crank signals (Table 6). The crank signals
are obtained from a crank sensor (120) in a front gear assembly (170), and
the hub signals are obtained from a hub sensor (130) in a rear gear assembly
(180) (Browning, col. 4, ll. 6-31; fig. 1B). The crank sensor generates one
signal per 1/8 revolution of the crank, and the hub sensor generates 1 signal
1 The rejection of claim 6 is not maintained in the Examiner’s Answer (p. 3).
Consequently, we consider the rejection of that claim to be withdrawn.
2
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