Appeal No. 1999-0242
Application 08/643,829
surface to the exterior of a prosthetic pylon which has a
generally curvilinear exterior” (specification, page 1).
Claim 28 is representative and reads as follows:
28. A prosthesis for attachment to the lower end of
a
round plyon, said prosthesis comprising:
a coupling member having on one side a curved concave
mating surface conforming substantially to a curved convex
outer mating surface of said pylon and on an opposite side a
substantially flat mating surface;
a foot member having an upper attachment section having
on one side a substantially flat mating surface substantially
conforming to said flat mating surface of said coupling
member; and
said mating surfaces being oriented substantially
parallel to the longitudinal axis of said pylon when said
corresponding conforming mating surfaces are mated together
such that an axial load placed on said pylon produces a
corresponding shear force on said mating surfaces in a
direction substantially parallel to the longitudinal axis of
said pylon.
Claims 28 and 30 through 32 stand rejected under 35
U.S.C. § 102(b) as being unpatentable over U.S. Patent No.
2,897,512 to Sackett, and claim 29 stands rejected under 35
U.S.C. § 103(a) as being unpatentable over Sackett.
Reference is made to the appellant’s main and reply
briefs (Paper Nos. 22 and 28) and to the examiner’s final
rejection and answer (Paper Nos. 7 and 24) for the respective
positions of the
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