E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 29/14 (2006.01) B65D 90/10 (2006.01) E02D 29/12 (2006.01)
Patent
CA 2061844
A watertight chimney assembly prevents infiltration of water in the region between a manhole cover support frame and a concrete manhole assembly. The watertight chimney is comprised of a pair of telescoping sleeves each provided with a flange for mounting respectively to the top lip of a manhole assembly and the bottom surface of the flange on the cover frame a desired distance above the top of the manhole assembly to maintain the cover frame at proper grade. An O-ring seated within an annular groove provided in one of the tubular members provides a sliding watertight seal therebetween. The sleeve flanges are compressed between the frame and manhole assembly and contribute to the watertight seal. One of the sleeves is reversible to increase the telescoping range between a minimum and a maximum extension. In an alternative embodiment, the internal surface of the manhole opening constitutes one of the telescoping members. A sealing gasket may be arranged on either of the two telescoping members and may be seated within a groove or clamped against the manhole opening. The sealing gasket may be any one of a variety of cross-sectional configurations and can be inflatable, if desired. As another alternative embodiment, an anchoring flange of one of the telescoping sleeves may be embedded into the manhole opening. The cast-in sleeve may be formed of a resilient material and is clamped to the cooperating telescoping member.
Kelly James A.
Westhoff James A.
A-Lok Products Incorporated
Borden Ladner Gervais Llp
LandOfFree
Water lock method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water lock method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water lock method and apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1603883