IP Library › Granted Patent US 12,228,210
Granted Patent B2
US 12,228,210 · App. 18/158,588 · Granted Feb 18, 2025

Traceable gasket and compression packing material

Inventors: Carlos Daniel Braga Girao Barroso (Rio de Janeiro, BR); Christopher Louis Day (Kemah, TX); Jose Carlos Carvalho Veiga (Rio de Janeiro, BR); Josmar Baruffaldi Cristello (Rio de Janeiro, BR); Robert Adam Riggs (Chesterfield, VA); André Carlos de Azevedo Valle (Rio de Janeiro, BR)
Assignee: TEADIT N.A., INC.
F16J15/104D02G3/32D02G3/36D02G3/38D02G3/447F16J15/102F16J15/121F16J15/22D10B2101/12Y10T428/1352
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Quick Facts
Patent No.
US 12,228,210
App. No.
18/158,588
Granted
Feb 18, 2025
Kind
B2
Abstract

A material that includes traceable particles that retain information about the fabrication of the material, which can be used to trace the origin thereof. The material may form gaskets, which are used to seal flanged joints in the food and beverage industry, and compression packings, which are used for sealing near valve stems, pump shafts, and similar machines.

Claims (26)

1. A traceable composite gasket material comprising:

a. a sintered polytetrafluoroethylene (PTFE) matrix;

b. metallic powder; and

c. traceable particles,

d. wherein the metallic powder and the traceable particles are dispersed within the PTFE matrix.

2. The traceable composite gasket material of claim 1 , wherein the metallic powder responds to magnetic fields and to light with a detectable behavior.

3. The traceable composite gasket material of claim 1 , wherein the traceable particles are selected from fluorophores and fluorescent dyes.

4. The traceable composite gasket material of claim 3 , wherein the traceable particles absorb light and emit light at a specific wavelength that is visible under a microscope with a filter set for the traceable particles.

5. The traceable composite gasket material of claim 1 , wherein the traceable particles are phosphor particles.

6. The traceable composite gasket material of claim 5 , wherein the phosphor particles absorb light in a wavelength range that is invisible and emit light in the visible range.

7. The traceable composite gasket material of claim 1 , wherein the traceable particles comprise porous silicon particles.

8. The traceable composite gasket material of claim 7 , wherein the porous silicon traceable particles have nanopores visible in white light.

9. The traceable composite gasket material of claim 1 , wherein the traceable particles comprise microdot particles.

10. The traceable composite gasket material of claim 9 , wherein the microdot particles are visible under a microscope.

11. The traceable composite gasket material of claim 1 , further comprising any number of fillers.

12. The traceable composite gasket material of claim 11 , wherein the fillers comprise any one or more of barite, silica, natural hollow glass micro-sphere, and synthetic hollow glass micro-sphere.

13. The traceable composite gasket material of claim 1 , wherein the PTFE matrix comprises fine powder PTFE.

14. The traceable composite gasket material of claim 1 ,

a. wherein the gasket material has a total weight; and

b. wherein the amount of PTFE is greater than about 30% of the total weight of the gasket material.

15. The traceable composite gasket material of claim 1 ,

a. wherein the gasket material has a total weight; and

b. wherein the amount of metallic powder is from about 1% to about 70% of the total weight of the gasket material.

16. The traceable composite gasket sheet of claim 1 ,

a. wherein the gasket material has a total weight; and

b. wherein the amount of traceable particles is less than 5% of the total weight of the gasket material.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2023
From: BARROSO, CARLOS DANIEL BRAGA GIRAO; DAY, CHRISTOPHER LOUIS; VEIGA, JOSE CARLOS CARVALHO; CRISTELLO, JOSMAR BARUFFALDI; RIGGS, ROBERT ADAM; VALLE, ANDRÉ CARLOS DE AZEVEDO
To: TEADIT N.A., INC.
Reel/Frame 062466/0174 →
Continuity (3)
Continuation PCTUS2021071021 · Jul 27, 2021
Continuation 16939786 · Jul 27, 2020
Related Publication 20230160471A1 · May 25, 2023
References Cited (13)
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Cited By (1)
US 1,112,644