Product and method for sealing and lubricating sewer manhole assemblies
AssigneeOatey Co.
InventorBlake R Tresan
Life of this patent
Estimating the term…
Abstract
A sewer manhole cover includes a frame having an access aperture and a cover for covering the access aperture. A primary seal is generated when the cover is placed on the frame either by way of contact between the frame and cover or by way of a gasket received within a groove formed into one of the frame or cover, wherein the gasket is compressed between the frame and cover. A method is provided for generating a secondary seal between the frame and cover by applying an amount of a viscous compound to a circumferential surface of the frame or cover, wherein the secondary seal is formed when the cover compresses the compound when the cover is received within the frame.
Claims4
A method for creating a secondary seal for a manhole assembly, said manhole assembly including a frame defining an access aperture therein and a cover received by said frame for covering said access aperture, said cover and said frame each having at least one circumferential surface, said method comprising:
- providing a primary seal between said cover and said frame when said cover is received within said frame;
- applying an amount of compound having a viscosity that allows it to flow to one of said circumferential surfaces of said cover or one of said circumferential surfaces of said frame to generate a circumferential deposition of said compound to form a secondary seal by said compound being compressed between said cover and said frame, wherein the compound is configured to provide a viscous barrier between said cover and said frame, to lubricate the engagement therebetween and thereby facilitate sliding or other movement of the cover relative to the frame, and to facilitate subsequent removal of the cover from the frame during use of the manhole.
Dependencies are inferred from the claim text.