Penetration slider seal expansion joint apparatus and method
AssigneeExpansion Joint Systems, Inc.
InventorNeville Barber
Life of this patent
Estimating the term…
Abstract
An expansion joint lies between a device and pipe and allows for movement at the joint. Embodiments utilize a case pipe, a sliding ring formed to house seals, and a flange that holds the sliding ring in place. A pipe contacts an inner seal inside the sliding ring which is compressed against the pipe beyond its memory and forms a tight seal, yet allows for pipe to move through the apparatus. At least one outer seal is compressed within its memory which allows for rotation of pipe and/or sliding ring relative to the apparatus about the axis of the pipe. Allows for unlimited travel of pipe and unlimited rotation. The apparatus becomes more efficient as contaminants fill the seals. Works below, at and beyond 1300 degree media, for example any liquid or gas. May be disassembled easily maintained.
Claims20
A penetration slider seal expansion joint comprising:
- a case pipe;
- an inner ring coupled with said case pipe;
- a sliding ring configured to hold an inner seal and at least one outer seal;
- a flange configured to hold said sliding ring and said inner seal and said at least one outer seal against said inner ring;
- said inner seal compressed beyond memory against a pipe;
- and,
- said at least one outer seal compressed within memory.
A method for utilizing a penetration slider seal expansion joint comprising:
- coupling an inner seal and at least one outer seal with a sliding ring;
- coupling an inner seal with a pipe;
- compressing said inner seal between said sliding ring and said pipe wherein said inner seal is compressed beyond memory;
- coupling a flange to a case pipe to enclose said sliding ring;
- and,
- compressing said at least one outer seal within memory.
Dependencies are inferred from the claim text.