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US 9,803,784 B2Granted
Corrugated pipe gasket
AssigneePress-Seal Corporation
InventorsJimmy Dean Gamble, Robert Ryan Slocum
Life of this patent
Estimating the term…
Abstract
A gasket is adapted for sealing a joint between bell and spigot ends of corrugated pipes. The gasket generally includes a pair of seal lobes which provide a redundant double seal, together with an anchoring portion sized to be received in a trough defined by the pipe corrugation and at least one anti-roll lip adapted to engage the anchoring corrugation.
Claims19
A pipe assembly defining perpendicular axial and radial directions, comprising:
- a pipe defining a longitudinal axis and having a spigot end with an annular corrugation, the corrugation including a front portion defining a front peak point, a rear portion defining a rear peak point, and a groove disposed between the front and rear portions and defining a nadir, the front portion defining a radius extending forwardly from the front peak portion and having a radius center defining a first radial distance from the longitudinal axis;
- and
- an annular gasket separate from the pipe, the annular gasket having a body formed of a resilient material and including a sealing side and anchoring side, the gasket comprising:
- an anchoring portion disposed at the anchoring side and extending radially inwardly, the anchoring portion received in the groove of the pipe;
- a first seal lobe disposed at the sealing side and defining a first lobe tip;
- and
- an anti-roll lip positioned forward of the first seal lobe;
- the gasket having an uninstalled condition in which the gasket is not connected to the pipe, with the anti-roll lip extending radially inwardly toward said anchoring side;
- and
- the gasket having an installed condition in which the gasket is stretched around the annular corrugation of the pipe in a tensioned condition, with the anti-roll lip extending radially inwardly toward said anchoring side in a direction toward the longitudinal axis along and over a leading surface of the front portion of the annular corrugation to an anti-roll lip tip, the anti-roll lip tip having a second radial distance from the longitudinal axis that is substantially equal to the first radial distance from the radius center to the longitudinal axis.
7 more elements
A pipe assembly defining perpendicular axial and radial directions, comprising:
- a first pipe having a spigot end with an annular corrugation including a front portion defining a front peak point, a rear portion defining a rear peak point, and a groove disposed between the front and rear portions and defining a nadir;
- a second pipe having an annular bell end with an annular inner surface, the first pipe and the second pipe defining a gasket receiving space having a receiving space radial extent between the nadir of the groove and the annular inner surface of the annular bell end when the first pipe is assembled to the second pipe;
- and
- an annular gasket disposed on the annular corrugation, the gasket having a body formed of a resilient material and including a sealing side and anchoring side, the gasket comprising:
- an anchoring portion disposed at the anchoring side and extending radially inwardly, the anchoring portion received in the groove of the first pipe;
- a first seal lobe disposed at the sealing side;
- and
- a second seal lobe disposed at the sealing side, the first seal lobe and the second seal lobe axially spaced from one another to define an anchoring portion trough of the gasket disposed between the first and second sealing lobes, wherein the anchoring portion includes an anchoring portion radial extent is a distance from a nadir of the anchoring portion trough to a nadir of the anchoring portion;
- the anchoring portion radial extent substantially equal to the receiving space radial extent, whereby the nadir of the anchoring portion and the nadir of the groove are in abutment, and the first seal lobe and the second seal lobe must substantially deform and compress when the gasket is in a sealing configuration in the gasket receiving space;
- and
- the first and second sealing lobes having tapered surfaces extending radially outwardly from the anchoring portion wherein, when the first and second pipes are connected, the sealing surfaces are compressed into a substantially flattened configuration along a direction perpendicular to the anchoring portion.
8 more elements
The pipe assembly of claim. 11, wherein the anchoring portion includes an annular aperture formed therein.
Dependencies are inferred from the claim text.