Appeal 2006-2778
Application 10/780,021
INTRODUCTION
The claims are directed to an overhead or underground telephone
lead-in cable for voice, video, and data transmission services. Specifically,
moisture is prevented from penetrating the cable by a swelling layer that
surrounds the core of the cable. Preventing moisture penetration enables the
cable to be installed underground. See generally Specification 1:5-16.
Claim 33 is illustrative:
33. An overhead or underground telephone lead-in cable for voice,
video and data (VVDL) transmission services, comprising:
a rectangular structure comprising a rectangular outer cover
having a geometrical shape comprising a thermoplastic material;
at least one or a plurality of transmission circuit [sic] comprising:
a self-supporting member comprising two conducting elements; said
elements arranged at the opposite ends, in parallel, and in turn are
diametrically opposed to the transmission circuit;
said cable comprising a core having a pair of stranded conductors
placed at the center of the rectangular structure of the cable wherein said
conductors are insulated by a thermoplastic compound layer; a swelling
layer surrounding said core which is deposited electrostatically as a moisture
protection element; and an extruded cover reinforced with a thermoplastic
material forming the lead-in cable.
The Examiner relies on the following prior art references to show
unpatentability:
Asai US 6,103,317 Aug. 15, 2000
Osornio US 2002/0003047 A1 Jan. 10, 2002
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