Appeal No. 97-2888
Application 08/389,077
Kristensen, 10 USPQ2d 1701, 1703 (Bd. Pat. App. & Int. 1989).
A claim containing a means-plus-function element is
indefinite under 35 U.S.C. § 112, second paragraph, if the
specification does not contain an adequate disclosure of
structure corresponding to the function of the claims. In re
Dossel, 115 F.3d 942, 946, 42 USPQ2d 1881, 1885 (citing In re
Donaldson Co. Inc., 16 F.3d 1189, 1195, 29 USPQ2d 1845, 1850
(Fed. Cir. 1994) (en banc)).
Claim 1 further calls for a means for changing the
position of the pivoting legs relative to first and second
frame members.
It is not clear to us what structure disclosed in the
specifica-
tion corresponds to this means-plus-function language. With
reference to appellant's Figures 2 and 6-10, the specification
(pages 14-15) describes the pivoting legs as follows:
Pivoting leg 146 is identical in construction to the
other legs 148, 150, 152 so that they are
interchange-able. The pivoting leg 146 has an
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