Appeal No. 2006-0128
Application No. 10/003,353
Appellants’ invention relates to mine doors and, more particularly, to providing a
mine door leaf that is relatively lightweight for its size, has substantial torsional rigidity,
has substantial resistance to stress, is fire-resistant, and can be economically
fabricated. As noted on page 1 of the specification, in general, a mine door leaf of the
invention comprises
a central core of a solidified composition, outer panels on opposite faces
of the core, the core having a force-transmitting relationship with said
panels, the panels and filling constituting an integrated stress-resistant
structure, and one or more hinge components on the leaf.
Independent claims 1, 38 and 41 are representative of the subject matter on appeal
and a copy of those claims can be found in the “Claim Appendix” attached to appellants’
brief.
The prior art references relied upon by the examiner in rejecting the appealed claim
are:
Kennedy et al. (Kennedy) Re 36,853 Sep. 5, 2000
Zen 6,481,179 Nov. 19, 2002
(filed Dec. 14, 2000)
Claims 1 through 9, 14 and 31 through 45 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Kennedy in view of Zen.
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