a second heel member;
a second leg member positioned above the second heel
member;
wherein the second heel member is pivotally attached
to the second leg member at a second pivot location so
that the second leg member is capable of movement
relative to the second heel member about a second axis of
rotation that passes through the second pivot location;
wherein the second axis of rotation is vertically
inclined no more than +/- 45 ;o
wherein the second axis of rotation lies within a
third plane that is inclined relative to a longitudinal
fourth plane of approximate symmetry which divides left
and right sections of the second boot;
wherein the second pivot location is spaced apart
from the fourth plane of approximate symmetry; and
wherein an angle of inclination between the first
plane and the second plane of approximate symmetry is
greater than an angle of inclination between the third
plane and the fourth plane of approximate symmetry.
18. Okajima’s specification defines the term “plane of
approximate symmetry” on pages 4-5 and 9 of application
08/665,679.
19. The “plane of approximate symmetry” is defined on
pages 4-5 of Okajima’s specification as follows:
... when the shoe is placed on a horizontal plane, the
heel section is approximately symmetrical with respect to
a vertical longitudinal plane which contains a line in
the longitudinal direction. This approximately
symmetrical plane is referred to herein as the ‘plane of
approximate symmetry.’
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