Appeal No. 2000-0693
Application 08/845,282
section of the rod which would be adjacent the rod
tip as having lining of ptfe tape (a fluoroplastic)
which is a low friction material. This tape would
substantially cover an inner circumferential surface
of the tubular member and the ptfe tape is [a] water
repelling substance. To cover the inside of
Barnett’s rod with ptfe tape the tape is wound
around a mandrel prior to molding the rod section
and one skilled in the art would expect it to be
wound in the manner shown by JA ‘836. In regard to
claims 10-15, 17-19, 21-57 and 59, the result of the
proposed combination[7] for the reasons stated above
is that the inner circumference is defined by
recessed and protruded portions since the wrapping
of the tape on a mandrel in the manner stated
produces alternate sections of protrusions and
recesses having a water repellant property.
reference. The relevant portion of the translation of JA ‘032
is found on page 11, lines 14-19, and reads as follows:
When the final span of the end section 3 of
stem has too smaller [sic] inner diameter to provide
feed rings, this section can be lined with an
antifriction material such as
polytetrafluoroethylene, and this is most readily
carried out by winding a polytetrafluoroethylene
tape on an arbor for forming the stem before the
section is molded.
7 It is not entirely clear what constitutes the “proposed
combination” referred to here by the examiner, although
presumably it would involve providing a
polytetrafluoroethylene tape lining of the type taught by JA
‘032 on the inner circumferential surface of the tubular
member of JA ‘871, and in so doing initially apply the tape to
a forming mandrel in the manner illustrated in JA ‘836 in
Figure 6 for tape 51 (i.e., with the edges of the wrapped tape
overlapping).
8
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