Appeal No. 1998-1974
Application 07/415,923
means in communication with said heating zone and said
heating means for controlling the temperature within said zone
to ±0.5EC;
means connected to said insulated vessel at said entrance
opening thereof for preventing convection currents around said
preform but allowing said preform to move through said means
and into said heating zone;
means for moving said preform along its longitudinal axis
into said heating zone at a predetermined speed;
means for passing a stream of reactive gas around said
preform and fiber so as to flush the surfaces of said preform
and fiber with said reactive gas, thereby removing
contaminants therefrom by chemical reaction and elimination of
air; and
means for pulling said fiber from said preform.
The examiner relies on the following references:
Siegmund 3,890,127 June 17, 1975
Kaiser 4,030,901 June 21, 1977
Kawashima et al. (Kawashima) 4,249,925 Feb. 10, 1981
The following rejections are before us on appeal:
1. Claims 1, 8 and 9 stand rejected under 35 U.S.C. § 103
as being unpatentable over the teachings of Siegmund.1
2. Claims 1, 8 and 9 stand rejected under 35 U.S.C. § 102
as anticipated by the disclosure of Kaiser, or in the
1The alternative final rejection of these claims under 35
U.S.C. § 102 was withdrawn in the answer.
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007