Pipe coupling for a venting system

Abstract

A leak proof coupling is accomplished by the combination of the spreading of an end of a pipe and by the insertion of a silicone gasket over the female side of each pipe section. When the sections are put together, the gasket lip is deflected downward to a predetermined amount established by the dimensions of the joint. This deflection generates the compression required to seals the gap between the male and female sides of the coupling. Because of the choice of thickness of the gasket material in combination with the inside and outside diameter of the gasket, assembly of different components of the venting system with each other is facilitated without using special tools or fixtures. Disassembly of the same components for routine maintenance is also easier to accomplish with this coupling design.

Description

[0001] The present patent application claims priority of U.S. 60 / 654,501 filed Feb. 22nd, 2005, the contents of which are incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention is directed to a ventilation system. More particularly, the present invention is directed to a pipe coupling for a pellet stove venting system. DESCRIPTION OF THE PRIOR ART [0003] Pellet stoves develop positive pressure inside the venting system. To prevent flue gases from escaping inside the building through the joint and pipe construction, it is absolutely critical that the pipe assembly be sealed. A number of solutions have been proposed, but none has been entirely satisfactory. [0004] Prior art pipe assemblies have two major problems. The first problem is related to installation of the pipe assembly. Several pipe assemblies require sealant application in the field to make the assemblies leak proof which complicates their installation and causes difficulties when cleaning up a...

AI Technical Summary

Benefits of technology

[0021] The present system offers several advantages including a leak proof coupling and pipe construction, a strong and durable design, an esthetically pleasant looking pipe, a faster and easier installation, an increased efficiency of the system and safer installation.

Problems solved by technology

A number of solutions have been proposed, but none has been entirely satisfactory.

Prior art pipe assemblies have two major problems.

The first problem is related to installation of the pipe assembly.

Several pipe assemblies require sealant application in the field to make the assemblies leak proof which complicates their installation and causes difficulties when cleaning up after installation.

These pipe assemblies are also difficult to paint over.

The second problem of prior art systems is related to maintenance of the pipe assembly.

Not only parts of the prior art systems are difficult to assemble, but they are equally difficult to disassemble when routine maintenance is required.

However, the coupling design does not stiffen the pipe in an efficient manner and does not guarantee maintenance of the roundness of the pipe under load stresses.

The gasket is designed for low temperature exhaust gases applications and the single wall pipe construction / coupling will not allow close clearances to combustibles materials.

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