Appeal No. 97-3998
Application 08/302,168
inserted within opening 108, and slid within slit
106. The opposing side walls of slit 106 are in
mutual contact, whereby these side walls press
against both sides of the sheet when inserted. As
the sheet is inserted fully into 106, the sheet edge
will be marked. Drawing the sheet in either
direction produces continuous lengthwise markings.
An alternative embodiment of the invention can
be seen in FIG. 2. Marker 200 includes a barrel 252
which
houses four fibrous, porous members 254(a-d). Openings
256(a-d) are disposed to expose slits 258(a-d), which are
disposed proximate the end of barrel 252. In a preferred
embodiment, fibrous, porous members 254(a-d) are of
different colors. While four fibrous, porous members are
shown, it should be understood that any number of such
members may be used. Openings 256(a-d) and slits
25[8](a-d) may be disposed at different positions
relative to the end of barrel 252. This facilitates the
insertion of a sheet within the desired opening. To
easily distinguish between different colors or types of
marking material exposed by each of the openings 256(a-
d), the outer covering of the barrel 252 may be
appropriately marked, as by color coding. Marker 200 is
shown as a sealed container with a closure 260 disposed
at the end closest to openings 256(a-d). In this
embodiment there may additionally be a nib such as is
shown in FIG. 1. Moreover, a cap such as 112, may be
appropriately shaped to cover openings 256(a-d).
As can be seen in FIG. 1, nib 110 is provided
with a slit extending transverse to the axis of the
marker barrel 102. A sheet may be drawn through
this slit to mark in a similar manner as slit 106,
or 258(a-d) [column 2, lines 9 through 48].
Anticipation is established only when a single prior art
reference discloses, expressly or under principles of
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Last modified: November 3, 2007