Appeal No. 1997-0236
Application No. 08/211,829
canceled claim 17 was filed January 10, 1996 and was entered
by the Examiner. Accordingly, claims 1-16 and 18-20 are the
appealed claims remaining in the application.
The disclosed invention relates to an elongate heater
having a resistive heating element core surrounded by first
and second insulating jackets. Appellants assert at page 2 of
the specification that the additional insulating jacket
provides reduced flammability relative to conventional
elongate heaters having a single insulating jacket.
Claim 1 is illustrative of the invention and reads as
follows:
1. An elongate heater which passes the VW-1 flame test and
which comprises
(1) a core which comprises a resistive heater element which
comprises a conductive polymer composition which exhibits PTC
behavior;
(2) a first insulating jacket which
(a) surrounds the core, and
(b) is composed of a first insulating material
comprising an organic polymer; and
(3) a second insulating jacket which surrounds and contacts
the first insulating jacket;
2
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