Appeal No. 2001-1527
Application No. 08/753,265
The claims
Claims 1 and 17 are representative.
1. A process for producing a drumhead comprising:
a. inserting a polymer sheet in a mold having a
peripheral section and a center section;
b. delivering heat to the polymer sheet;
c. cooling the mold only at the center section
to maintain a temperature differential between the
peripheral section and the center section wherein the
temperature at the peripheral section is higher than
the temperature at the center section; and
d. forming the polymer sheet into a drumhead
battering surface comprised of a flat battering surface
and a peripheral collar depending from the flat
battering surface to form the drumhead.
17. A process for forming a drumhead comprising the
steps of subjecting the center section of a polymer
sheet to a temperature in the range of 90 degrees F to
130 degrees F and subjecting the periphery of said
polymer sheet to a temperature in the range of 180
degrees F to 230 degrees F and imposing a force on the
polymer sheet to form a flat central battering surface
and a peripheral collar depending from the flat central
battering surface.
The examiner’s rejections
Rejection 1
The examiner has rejected claims 1–5 under 35 U.S.C. § 112,
first paragraph, as lacking an adequate written description of
the limitation “cooling the mold only at the center section.”
- 3 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007