Static structures (e.g. – buildings) – Machine or implement
Reexamination Certificate
2005-01-11
2005-01-11
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Machine or implement
C052S506070, C052S506080, C052S749100
Reexamination Certificate
active
06840021
ABSTRACT:
A system for installing suspended ceilings in large commercial buildings employing t-shaped main and intersecting branch ceiling joists. The main joists are suspended from the purlins of the building by upper brackets that secure to the purlins and by lower brackets that secure to the joists. Rods that are adjustable in length attach the upper brackets to the lower brackets to thereby suspend the joists below the purlins. To install the joists, the rods are adjusted in length so that all the joists are level and are suspended at the desired height within the building. The main joists are spaced approximately 8 feet apart from each other, and the branch joists are spaced approximately 4 feet apart from each and attach to the main joists at right angles so as to form a plurality of frames for supporting 4×8 foot sheets of insulated ceiling board.
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Ashmore Gary D.
Hensley Mike
AAON Inc.
Friedman Carl D.
Katcheves Basil
McKay Molly D.
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