Appeal No. 2003-0414 Page 12
Application No. 09/833,831
markings can be used for measurement. The materials which have been
selected for the purpose of illustration are materials common in the construction
industry. It will be recognized that the teachings are equally applicable to other
industries. The type and extent of markings will, of course, vary depending upon
the desired application. The intent is to reduce the time required during
installation to measure, mark or cut the materials. For some applications the
marking must be extensive to accomplish this purpose, for other applications a
very elementary marking system may be used. FIGS. 1 through 7 illustrate
applications and variations on the general principle.
Benvenuto teaches (column 1, lines 43-60) that
In one conventional track system, after marking the height of the ceiling to
be installed, a wall angle molding is attached to the walls around the inside
perimeter thereof at the point where the ceiling is to be installed. The moldings
are cut to length and the outside corners mitered. Main T support members must
then be cut to length so that cross-T slots line up with cross-T points of the
previously installed molding. The main Ts run parallel to the room center line and
are perpendicular to the ceiling joists. Metal hangers are installed which support
the main Ts. The main T is typically provided in sections which are connected
together to form a continuous run. Cross-Ts are then installed which run
perpendicular to the main Ts to form a grid that supports the individual ceiling
tiles or panels. Again, the cross-Ts must be measured and cut to the proper
dimensions and are then locked into the main Ts. In most instances the Ts are
fabricated of metal and must be cut with tin snips or the like with any burrs and
sharp edges being filed off as necessary.
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007