F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
F16J 15/14 (2006.01) E04D 13/147 (2006.01) F16L 5/10 (2006.01)
Patent
CA 2060781
A mouldable gasket is provided herein for resiliently supporting a conduit in an opening within a wall and watertightly sealing the space between the wall and the conduit, the gasket having a central axis which intersects a symmetry centreline. The gasket includes an outer annular anchoring portion, so that a symmetry centreline passes through the anchoring portion which is symmetrical about the centreline. The centreline is substantially-perpendicular to the central axis of the gasket. The gasket further includes an annular joining portion having a tapered cross-section extending radially- inwardly from, and integral with, the anchoring portion so that its longitudinal axis is aligned with, and is symmetrical about, the symmetry centreline. The end of the taper is joined to the anchoring portion and has a dimension which is less than that of an end of the taper which is closer to the central axis of the gasket. The gasket further includes an annular skirt portion having an outer end joined to, and integral with, the tapered joining portion, the annular skirt portion having an outer annular portion which is symmetrical to the centreline and having a second inner portion which is aligned diagonally relative to the centreline. The annular skirt portion is provided with an anti-balloon portion, which is configured to limit the expansion of the gasket due to water pressure which may be applied thereto while at the same time facilitating the flexibility of the skirt. The skirt portion terminates in an enlarged annular-shaped O-ring portion defining an annular central opening in the gasket for receiving the conduit therethrough. Prior to insertion of the conduit, the length of the skirt measured between the tapered portion and the O-ring portion is greater than the distance between the O-ring portion and the tapered portion measured along the symmetry centreline. This enables the skirt to assume either one of two "over-centre" positions on opposite sides of the symmetry centreline. The O-ring portion is of a size which is configured to embrace and engage an outer periphery of the conduit extending therethrough. This enables the gasket to be moved to either of the two "over- centre" positions by movement of the conduit which is embraced, and engaged, by the O- ring portion.
Kelly James A.
Westhoff James A.
A-Lok Products Incorporated
Borden Ladner Gervais Llp
Poly-Tec Products Inc.
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