Static structures (e.g. – buildings) – Wall – ceiling – or floor designed for utilities – Having a passageway through the entire wall – ceiling – or...
Patent
1996-06-18
1997-12-16
Wood, Wynn E.
Static structures (e.g., buildings)
Wall, ceiling, or floor designed for utilities
Having a passageway through the entire wall, ceiling, or...
138106, 277102, 277104, 277124, 277192, 277198, 277199, 285 64, 285346, F16J 1510
Patent
active
056971940
ABSTRACT:
A modular seal assembly for sealing a circular opening through a wall, usually with one or more conduits (i.e., telecommunication cables) extending through the seal. The assembly includes an outer pressure annulus and a thick inner pressure disc, both of natural or synthetic rubber, EPDM, urethane, or other elastomer. In the outer annulus the elastomer is an annular series of interconnected blocks of length L1 having a central opening of radius R2; a series of pressure bolts compress the blocks axially, expanding the annulus both outwardly and inwardly. The inner disc, which has an outer radius of about R2 and is interlocked with the elastomer blocks of the outer annulus, has a multiplicity of circular layers, much like an onion; the layers are concentric about an opening through which a conduit usually extends. Tightening the pressure bolts causes the outer annulus to compress the disc, forcing the disc against the conduit to complete a seal; the elastomer blocks of the outer annulus seal against the wall opening.
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Gignac Robert J.
Griffiths Carl R.
Kwiatkowski Edward L.
PSI Telecommunications, Inc.
Saladino Laura A.
Wood Wynn E.
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