초록 ▼

A pipe joint includes an outer pipe and an inner pipe inserted into the outer pipe. One of the outer pipe and the inner pipe includes an annular groove and a gasket is positioned in the groove to provide a seal between the outer pipe and the inner pipe. The gasket includes an annular gasket body for

A pipe joint includes an outer pipe and an inner pipe inserted into the outer pipe. One of the outer pipe and the inner pipe includes an annular groove and a gasket is positioned in the groove to provide a seal between the outer pipe and the inner pipe. The gasket includes an annular gasket body formed of a resilient material with the gasket body having a centerline. A projection extends radially away from the gasket body. The projection is so located on the gasket body that it is bisected by the centerline thereof. An annular bore extends in the gasket body. The bore is spaced from the projection and is so located in the gasket body that it is bisected by the centerline thereof. The gasket is symmetrical around an axial centerline and is therefore insensitive to axial orientation. It is meant for sealing an annular space in a bell and spigot pipe joint and is capable of sealing against both internal and external pressures and internal and external vacuums.

대표청구항 ▼

A pipe joint which can accommodate both internal pressures and external pressures, said pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groo

A pipe joint which can accommodate both internal pressures and external pressures, said pipe joint comprising: an outer pipe; an inner pipe inserted into said outer pipe, wherein one of said outer pipe and said inner pipe comprises an annular groove; and, a gasket positioned within said annular groove and adapted to provide a seal between said outer pipe and said inner pipe, said gasket comprising: an annular gasket body formed of a resilient material, said gasket body having a centerline and including a base adapted to sealingly engage said groove, a projection extending from said gasket body, said projection being so located on said gasket body that it is bisected by said centerline thereof, said projection comprising a first compression point for said gasket body, and an annular bore extending in said gasket body, said bore being spaced from said projection and being so located on said gasket body that it is bisected by said centerline thereof.