US 11,898,638 B2
Flange gasket
Steven Kristopher Kolb, Humble, TX (US)
Assigned to LGC US ASSET HOLDINGS, LLC, Houston, TX (US)
Filed by LGC US ASSET HOLDINGS, LLC, Houston, TX (US)
Filed on Oct. 9, 2019, as Appl. No. 16/597,330.
Application 16/597,330 is a continuation of application No. 15/621,175, filed on Jun. 13, 2017, abandoned.
Application 15/621,175 is a continuation of application No. 13/795,897, filed on Mar. 12, 2013, abandoned.
Claims priority of provisional application 61/615,441, filed on Mar. 26, 2012.
Prior Publication US 2020/0040998 A1, Feb. 6, 2020
Int. Cl. F16J 15/08 (2006.01); F16J 15/12 (2006.01); F16L 23/18 (2006.01); F16L 23/20 (2006.01)
CPC F16J 15/0806 (2013.01) [F16J 15/0818 (2013.01); F16L 23/18 (2013.01); F16L 23/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of making a corrugated metal gasket for use between flanges, the method comprising:
providing an annular ring made from a raw stock material comprising a first portion and a second portion;
machining a first plurality of substantially uniform corrugations into a first axial surface of said second portion of said annular ring; and
machining a second plurality of substantially uniform corrugations into a second axial surface of said second portion of said annular ring,
wherein said first portion of said annular ring has a non-compressed axial thickness after said machining of said first plurality of substantially uniform corrugations and said machining of said second plurality of substantially uniform corrugations,
wherein said first portion is distinct from said second portion and said first portion does not include corrugations,
wherein a non-compressed distance between a peak of a corrugation of said first plurality of corrugations and a trough of said corrugation of said first plurality of corrugations is less than said non-compressed axial thickness of said first portion,
wherein said first and/or second plurality of corrugations are the largest corrugations of the annular ring,
wherein the non-compressed axial thickness of the material of the first portion is less than a distance measurable between parallel lines defined by the troughs of the first and second plurality of substantially uniform corrugations,
wherein the machining a first plurality of substantially uniform corrugations includes cutting a corrugated profile by radial machining of said first axial surface, and wherein the corrugated profile is subsequently milled to form the desired corrugated geometry.