IP Library › Granted Patent US 12,404,660
Granted Patent B2
US 12,404,660 · App. 17/723,732 · Granted Sep 2, 2025

Dispersible wear indicator

Inventors: David Bruno Parzynski, Jr. (Peoria, IL); Thomas Marshall Congdon (Dunlap, IL); Benjamin Thomas Schafer (Elk River, MN)
Assignee: Caterpillar Inc.
E02F9/2883E02F9/26E02F9/2858E02F9/2833
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Quick Facts
Patent No.
US 12,404,660
App. No.
17/723,732
Granted
Sep 2, 2025
Kind
B2
Abstract

A wear member includes an attachment portion, and a wear portion extending from the attachment portion that defines a wear surface. The wear portion has a dispersible wear indicator that is disposed in the wear portion, and that is spaced a predetermined distance away from the wear surface.

Claims (48)

1. A wear member comprising:

an attachment portion;

a wear portion extending from the attachment portion that defines a wear surface; and

a bleeding wear indicator disposed in the wear portion and spaced a predetermined distance away from the wear surface,

wherein the bleeding wear indicator comprises a dissolvable solid, the dissolvable solid dispersing to a working material upon contacting moisture in the working material to indicate that the wear member needs to be repaired or replaced.

2. The wear member of claim 1 , wherein the bleeding wear indicator further comprises at least one of:

a paint,

a polymer, or

a fluid.

3. The wear member of claim 2 , wherein the fluid comprises at least one:

a UV glowing liquid, or

a colored gas visible in a vicinity of a work area upon exposure indicating the wear member needing to be repaired or replaced.

4. The wear member of claim 1 , wherein the bleeding wear indicator is disposed nearer the attachment portion as opposed to the wear surface.

5. The wear member of claim 1 , wherein the attachment portion defines an attachment portion width, and the wear portion defines a wear portion width that is greater than the attachment portion width.

6. The wear member of claim 5 , wherein the wear member has an at least partially “T shape” in a cross-section parallel to the wear portion width and the attachment portion width.

7. The wear member of claim 5 , wherein the attachment portion is disposed at a midpoint along the wear portion width.

8. A skid for use with a cold planer assembly, the skid comprising:

a sliding portion including a sliding surface;

a connecting portion extending from the sliding portion that is thinner than the sliding portion; and

a first dispersible wear indicator disposed in the sliding portion and positioned away from the sliding surface,

wherein the first dispersible wear indicator comprises a dissolvable solid, the dissolvable solid dispersing to a working material upon contacting moisture in the working material to indicate that the skid needs to be replaced.

9. The skid of claim 8 , further comprising a ramp portion extending from the sliding portion at an oblique angle to the sliding portion.

10. The skid of claim 9 , wherein the ramp portion includes a second dispersible wear indicator that is disposed in the ramp portion.

11. The skid of claim 10 , wherein the ramp portion includes a push surface, and the second dispersible wear indicator is spaced away from the push surface.

12. The skid of claim 8 , wherein the sliding portion includes a top exposed surface, and the first dispersible wear indicator is disposed at the top exposed surface of the sliding portion proximate to the connecting portion.

13. The skid of claim 9 , wherein the first dispersible wear indicator has an elongated racetrack perimeter.

14. The skid of claim 9 , wherein the first dispersible wear indicator further comprises at least one:

a paint,

a polymer,

a fluid.

15. The skid of claim 9 , wherein the connecting portion includes a plurality of thru-holes.

16. The skid of claim 10 , wherein:

the first dispersible wear indicator is symmetrical to the second dispersible wear indicator about a first plane of symmetry, and

the skid further comprises a third dispersible wear indicator and a fourth dispersible wear indicator, the third dispersible wear indicator and the fourth dispersible wear indicator being symmetrical to the first dispersible wear indicator and the second dispersible wear indicator about a second plane of symmetry.

17. The skid of claim 16 , wherein the second dispersible wear indicator comprises one of:

a paint,

a polymer,

a dissolvable solid, or

a fluid.

18. The skid of claim 16 , wherein the third dispersible wear indicator comprises:

a UV glowing liquid dispersing to the working material upon contacting the working material to indicate under UV lights that the wear member needs to be replaced, or

a colored gas visible in a vicinity of a work area upon exposure indicating the wear member needing to be repaired or replaced.

19. A method of alerting that a wear member needs to be replaced comprising:

forming a wear member that includes a bleeding wear indicator, wherein the bleeding wear indicator comprises a dissolvable solid, the dissolvable solid dispersing to a working material upon contacting moisture in the working material to indicate that the wear member needs to be replaced.

20. The method of claim 19 , wherein the wear member further includes a dispersible wear indicator,

the method further comprising:

upon the work material contacting the dispersible wear indicator, releasing a dispersing material visible in a vicinity of a work area.

21. The method of claim 20 , further comprising using ultraviolet light to cause a liquid acting as the dispersing material or the bleeding material to glow.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 19, 2022
From: PARZYNSKI, DAVID BRUNO, JR; CONGDON, THOMAS MARSHALL; SCHAFER, BENJAMIN THOMAS
To: CATERPILLAR INC.
Reel/Frame 059635/0512 →
Continuity (1)
Related Publication 20230332382A1 · Oct 19, 2023
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