초록 ▼

A gasket for pipe-to-pipe connections, which is closely received within a rectangular-shaped annular groove in the bell end of a pipe, and provides a compressive, fluid-tight seal with the spigot end of another pipe. The gasket includes a two-part body having a substantially rectangular profile in

A gasket for pipe-to-pipe connections, which is closely received within a rectangular-shaped annular groove in the bell end of a pipe, and provides a compressive, fluid-tight seal with the spigot end of another pipe. The gasket includes a two-part body having a substantially rectangular profile in section, including a relatively rigid component joined to a relatively resilient component. The resilient component includes a radially inwardly projecting sealing lobe for providing a compressive seal with the spigot end of a pipe, and a reinforcement portion of the rigid component is disposed between the sealing lobe and the pipe bell end to provide a radially non-compressible reaction surface against which the sealing lobe is compressed. The rigid component also includes a tapered leading edge portion for aligning and centering the spigot end of a pipe upon insertion within the gasket, and the leading edge portion is reinforced by a plurality of circumferentially spaced ribs.

대표청구항 ▼

What is claimed is: 1. A gasket, comprising: an annular body having a substantially rectangular profile in section, defining axially spaced leading and trailing sides, and radially spaced outer and inner sides, said body further comprising: a relatively rigid component having a plurality of circumf

What is claimed is: 1. A gasket, comprising: an annular body having a substantially rectangular profile in section, defining axially spaced leading and trailing sides, and radially spaced outer and inner sides, said body further comprising: a relatively rigid component having a plurality of circumferentially spaced ribs therearound; and a relatively resilient component joined to said rigid component and including a sealing lobe projecting radially inwardly from said body inner side, said rigid component including a reinforcement portion disposed radially in between said sealing lobe of said resilient component and said body outer side. 2. The gasket of claim 1, wherein said rigid and resilient components are integrally bonded to one another. 3. The gasket of claim 1, wherein said rigid component defines said body leading side and said resilient component defines said body trailing side. 4. The gasket of claim 1, wherein said rigid component includes a leading edge portion extending along said body inner side toward said body leading side. 5. The gasket of claim 4, wherein said ribs extend radially between said leading edge portion and said body outer side. 6. The gasket of claim 4, wherein said leading edge portion is tapered at an acute angle with respect to a longitudinal axis of said gasket. 7. A gasket, comprising: an annular body having a substantially rectangular profile in section, defining axially spaced leading and trailing sides, and radially spaced outer and inner sides, said body further comprising: a relatively rigid component having a plurality of circumferentially spaced ribs therearound; and a relatively resilient component joined to said rigid component and including a sealing lobe projecting radially inwardly from said body inner side, wherein said rigid component includes a reinforcement portion disposed between said sealing lobe of said resilient component and said body outer side, and said reinforcement portion has a substantially I-shaped sectional profile. 8. A gasket, comprising: an annular body having axially spaced leading and trailing sides, and radially spaced outer and inner sides, said body further comprising: a relatively rigid component having a plurality of circumferentially spaced ribs therearound, and a leading edge portion extending toward said body leading side; and a relatively resilient component joined to said rigid component and including a sealing lobe projecting radially inwardly from said body inner side, wherein said rigid component includes a reinforcement portion disposed between said sealing lobe of said resilient component and said body outer side, and said reinforcement portion has a substantially I-shaped sectional profile. 9. The gasket of claim 8, wherein said rigid and resilient components are integrally bonded to one another. 10. The gasket of claim 8, wherein said gasket body has a substantially rectangular profile in section. 11. The gasket of claim 8, wherein said ribs extend radially between said leading edge portion and said body outer side. 12. The gasket of claim 8, wherein said rigid component defines said body leading side and said resilient component defines said body trailing side. 13. The gasket of claim 12, wherein said sealing lobe of said resilient component is disposed adjacent said body trailing side. 14. A gasket, comprising: an annular body having axially spaced leading and trailing sides, and radially spaced outer and inner sides, said body further comprising: a relatively resilient component including a sealing lobe projecting radially inwardly from said body inner side; and a relatively rigid component integrally bonded to said resilient component, said rigid component having a radially non-compressible reinforcement portion disposed radially in between said sealing lobe and said body outer side, wherein said reinforcement portion of said rigid component has a substantially I-shaped profile in section. 15. The gasket of claim 14, wherein said rigid component further comprises: a leading edge portion extending along said body inner side toward said body leading side; and a plurality of circumferentially spaced ribs each extending between said leading edge and said body outer side.