Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-07-20
1982-08-03
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277152, 277207R, 277DIG2, 285 4, F16J 1510, F16L 2500
Patent
active
043424627
ABSTRACT:
An adjustable seal member for effecting a leak-proof junction between a conduit and an opening in the sidewall of a manhole well in an underground sewer installation. The seal member, made of elastomeric material, is in the form of a flanged sleeve which is disposed about the periphery of the conduit and which is clamped over the conduit by means of a steel strap clamp. The flange is embedded in the concrete or cement of the manhole well structure in the edge of the opening in the manhole. The sleeve is adjustable to diverse conduit sizes within a range by having a plurality of increasing internal diameter portions for fitting conduits of different outer diameters within the range to insure relatively close fit between the internal surface of the sleeve and the external surface of the conduit. In the alternative, the sleeve is provided with a flap integrally formed with the remaining of the sleeve body and with a pyramidal integral portion which can be folded over to adjust the internal diameter of the sleeve to an appropriate conduit size. The invention further contemplates providing a seal member with a sleeve portion on both sides of the flange for clamping the second sleeve portion over the conduit in the inside of a manhole well.
REFERENCES:
patent: 3603618 (1971-09-01), Stratton
patent: 3973783 (1976-08-01), Skinner et al.
patent: 4103901 (1978-08-01), Ditcher
patent: 4199157 (1980-04-01), Skinner
patent: 4211423 (1980-07-01), Resech
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