Cast gasket

Details Cast gasket Cast gasket

F - Mech Eng,Light,Heat,Weapons

16

J

277/56

F16J 15/32 (2006.01) F16L 5/10 (2006.01)

Patent

CA 1326050

ABSTRACT OF THE DISCLOSURE A novel cast, resiliently-deformable gasket is provided herein for supporting a sewer pipe in a manhole opening and sealing the space between the walls of the opening and the surface of the sewer pipe. The gasket includes a generally- pentagonally-shaped, relative large mass and substantial thickness main body portion. A cylindrical flange member is integral with the main body portion and is in the form of a staight leg portion terminating in an "L"-shaped foot. A web of substantial thickness but which is nevertheless of less thickness than that of the main body portion. extends radially-inwardly at an acute angle from the main body portion. The web terminates in a rim portion of torroidal form, which is integral with the web and having an inner diameter less than the outer diameter of the pipe. The cylindrical flange and at least half the mass of the main body portion are adapted to be secured in situ within the manhole at the manhole opening. This gasket is sufficiently resilient to compensate for stress in shear, is sufficiently flexible to accomodate extensive misalignment of the sewer pipe, and yet is capable of affording an absolute fluid-tight seal in the rim of the manhole opening. The torroidal rim provides a sealing tension where it contacts the sewer pipe. The gasket moreover is easy to install, comparatively inexpensive to make, and extremely reliable in use,

549536

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