Flange gasket

Inactive Publication Date: 2013-09-26
LAMONS GASKET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a hybrid gasket that combines the advantages of both corrugated and machined gaskets. By replacing the metal forming process with machining, the gasket has greater stiffness and is able to recover more closely to its original corrugated geometry. The gasket has high load bearing capabilities and can compensate for misalignment and flange parallelism issues. The compressibility characteristic of the gasket allows it to seal imperfect connections. The machined gasket combines the benefits of both thin and thick corrugated gaskets, eliminating certain disadvantages of both designs. The ability for the gasket to bend and compensate for misalignment or damage makes it ideal for various installation situations. The achieving of high stresses on point load contact of the serrations and the high load bearing capability of the gasket makes it useful in all pressure classes. The use of an alternating series of machined corrugations enhances recovery, resilience, and compressibility, allowing the gasket to adapt to alignment deficiencies. The disclosed gasket is able to generate higher stress points on the machined corrugations.

Problems solved by technology

Disadvantages of a corrugated metal gasket include the following:1. Moderate to low load bearing capability which results in the material being prone to cracking and fatigue if not loaded evenly.2. Low rigidity and therefore difficult to handle.3. Only applicable to 150 and 300 class flanges.
Low rigidity can be a disadvantage as its more fragile nature can allow over-bending which in turn can damage the graphite (or ptfe) facing.

Method used

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Embodiment Construction

[0044]For the purposes of promoting an understanding of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended, such alterations and further modifications in the illustrated device and its use, and such further applications of the principles of the disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the disclosure relates.

[0045]Referring first to FIG. 1, a prior art style of annular flange gasket 20 for use in a bolted flange joint is illustrated in partial, cross-sectional form. The focus of FIG. 1 is on the cross-sectional shape of the corrugations 22 which have a generally sinusoidal shape in a radial direction. The letter “R” reference with arrows are added to FIG. 1 to show the radial direction. This style of gasket is typica...

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PUM

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Abstract

A corrugated metal gasket for use between two flanges wherein the corrugated metal gasket is produced by a method comprising the steps of providing an annular gasket substrate and machining into that substrate a plurality of substantially uniform and generally concentric corrugations.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 615,441 filed Mar. 26, 2012 which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates generally to gaskets and, more particularly, to an improved gasket for positioning between facing conduit flanges. These facing flanges are bolted together and some of the bolted joint characteristics are relevant to the type of gasket which is selected. In terms of technological background, one general style of flange gasket is best described as a corrugated metal gasket. One example of such a corrugated metal gasket is disclosed in U.S. Pat. No. 5,421,594, which issued Jun. 6, 1995 to Marine & Petroleum Mfg., Inc. of Houston, Tex. Another general style of flange gasket is best described as a kammprofile gasket whose design and construction are covered by standard EN-12560-6.[0003]Continuing with the technological background, a still ...

Claims

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Application Information

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IPC IPC(8): F16J15/08
CPCF16J15/0818F16J15/0806F16L23/18F16L23/20
InventorKOLB, STEVEN KRISTOPHER
OwnerLAMONS GASKET