Appeal No. 1998-2537
Application 08/680,602
conformable to the finished grinding wheel and are to ensure
the accuracy in shape and dimension thereof.
It is the examiner’s position that Graham discloses
the production of flat or depressed center abrasive wheels
having a thickness of one sixteenth (1/16) of an inch. For
the process of forming depressed wheels, the examiner (on page
5 of the answer), points to col. 9, line 57 to col. 10, line
3, of Graham, which states:
Where the wheels are cold pressed, the
lay-ups preferably will be die cut to
approximate final diameter and arbor hole
dimensions and the lay-ups pressed at room
temperatures for 1 to 3 minutes to stops
[sic] which establish wheel thickness. The
lay-ups are then removed from the press and
stacked on a metal dowel rod of slightly
smaller diameter than the arbor holes, with
metal plates (flat for cutoff wheels or
shaped for depressed center wheels) and
release sheets positioned between adjoining
lay-ups, and pressure is applied to the
stack so formed by clamps or the like to
maintain the stack in compressed condition.
The stack is then placed in an oven and
cured for about 20-24 hours at a
temperature of from 325° F. to 375° F.
6
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