Static structures (e.g. – buildings) – Processes – Fabrication of member – module – etc.
Reexamination Certificate
2011-06-28
2011-06-28
Chapman, Jeanette E. (Department: 3633)
Static structures (e.g., buildings)
Processes
Fabrication of member, module, etc.
C052S019000, C052S169600, C052S245000, C052S020000, C220S004040, C220S004260, C474S095000
Reexamination Certificate
active
07966786
ABSTRACT:
A riser formed from a plurality of curved cylindrical segments with vertical side edges having mating vertically tapered projections and slots brought into interlocking engagement to pull confronting surfaces together as the tapered elements become increasingly mechanically engaged. The segments are assembled by a sliding engagement of the protruding mating element of one segment into the vertically tapered slot of an adjacent segment. When sufficient segments are joined together horizontally to complete a ring except for a last adjacent pair of vertical side edges, the ring is warped to align the protruding mating element of the last adjacent pair of vertical side edges with an opposite end of the adjacent tapered slot. Thus aligned, the final protruding mating element and tapered slot are then slipped together while un-warping the joined segments forming the remainder of the ring until the top and bottom ends of all the segments are aligned. A cover has a flexible spider on a lower surface that can be locked into a groove or other feature on an inside surface of the curved riser segments.
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Brinks Hofer Gilson & Lione
Chapman Jeanette E.
Sim-Tech Filters, Inc.
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