Appeal No. 1999-1987 Page 7
Application No. 08/400,129
Alexander discloses a heavier ball 12'. As shown in Figure 5,
the heavier ball 12' is attached to the line 14 via two
lengths 76, 78 of an elastic cord formed of elastic strands
with a covering of cloth fabric braided suitably to permit
expansion and contraction of the cord.
Albert discloses a baseball practice device. As shown in
Figure 2, the baseball practice device includes a baseball 25,
a length of linked chain 23, a rubber bumper 21 and a length
of rubber tubing or hose 30 which extends over the lower
portion of the chain 23 and engages at one end with the
baseball 25. Albert teaches (column 1, lines 43-46, and
column 2, lines 26-28) that the length of rubber tubing or
hose 30 provides protection for the bat and eliminates whips
in the chain which would otherwise occur when the ball is
struck.
After the scope and content of the prior art are
determined, the differences between the prior art and the
claims at issue are to be ascertained. Graham v. John Deere
Co., 383 U.S. 1, 17-18, 148 USPQ 459, 467 (1966).
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