Brake pad with surface coating

Patent metadata

Field	Value
Publication number	US-11428281-B2
Application number	US-201916555225-A
Country	US
Kind code	B2
Filing date	Aug 29, 2019
Priority date	Aug 29, 2019
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

A brake pad having a surface coating operable to enhance the bedding-in process during normal operation. The surface coating may be formulated using one or more materials found in a friction lining of the brake pad. The surface coating may be formulated using only non-metal materials.

First claim

What is claimed is:

1. A brake pad comprising:
a backing plate having a mounting surface;
a friction lining affixed to the mounting surface and having a tribological surface that is parallel to the mounting surface within a specified tolerance; and
a surface coating affixed to a portion of the tribological surface using an adhesive and having a predetermined peripheral shape as viewed in a direction perpendicular to the tribological surface,
wherein the surface coating is a composite material, the composite including a potassium titanate, and wherein the predetermined peripheral shape comprises a geometric shape asymmetrically applied to the tribological surface,
wherein the tribological surface comprises a proximal end and a distal end opposite from the proximal end, and wherein the asymmetrical application of the predetermined peripheral shape comprises a continuous and gradual reduction in width when observed along a direction from the proximal end to the distal end.

2. The brake pad of claim 1 , wherein the composite includes at least two distinct potassium titanates.

3. The brake pad of claim 1 , wherein the surface coating is visually distinct from the friction lining.

4. The brake pad of claim 1 , wherein the adhesive has a curing time not greater than 180 seconds within a specified tolerance.

5. The brake pad of claim 1 , wherein the surface coating is affixed to the tribological surface using a stamping process.

6. The brake pad of claim 1 , wherein the composite comprises only non-metal materials.

7. The brake pad of claim 1 , wherein the composite comprises a material component also found in the friction lining.

8. The brake pad of claim 1 , wherein the composite comprises at least two materials selected from a list including inorganic resin, organic resin, sodium silicate, poly-blend non-sanded grout, zirconia, zircon, barytes, antimony trisulfide, and magnetite.

9. The brake pad of claim 1 , wherein the width of the peripheral shape is 0 beyond a midpoint between the proximal end and the distal end.

10. The brake pad of claim 1 , wherein the predetermined peripheral shape is localized at a portion of the tribological surface that exhibits a higher frequency of contact with a brake rotor during operation.

11. A brake pad comprising:
a backing plate having a mounting surface;
a friction lining affixed to the mounting surface and having a tribological surface that is parallel to the mounting surface within a specified tolerance; and
a surface coating affixed to a portion of the tribological surface using an adhesive and having a predetermined peripheral shape as viewed in a direction perpendicular to the tribological surface,
wherein the surface coating is a composite material, the composite comprising only non-metal materials, and wherein the predetermined peripheral shape comprises a geometric shape asymmetrically applied to the tribological surface,
wherein the tribological surface comprises a proximal end and a distal end opposite from the proximal end, and wherein the asymmetrical application of the predetermined peripheral shape comprises a continuous and gradual reduction in width when observed along a direction from the proximal end to the distal end.

12. The brake pad of claim 11 , wherein the composite includes a potassium titanate.

13. The brake pad of claim 12 , wherein the composite includes at least two distinct potassium titanates.

14. The brake pad of claim 11 , wherein the surface coating is visually distinct from the friction lining.

15. The brake pad of claim 11 , wherein the adhesive has a specified curing time not greater than 180 seconds within a specified tolerance.

16. The brake pad of claim 11 , wherein the surface coating is affixed to the tribological surface using a stamping process.

17. The brake pad of claim 11 , wherein the composite comprises a material component also found in the friction lining.

18. The brake pad of claim 11 , wherein the width of the peripheral shape is 0 beyond a midpoint between the proximal end and the distal end.

19. The brake pad of claim 11 , wherein the predetermined peripheral shape is localized at a portion of the tribological surface that exhibits a higher frequency of contact with a brake rotor during operation.

20. The brake pad of claim 11 , wherein the composite comprises at least two materials selected from a list including inorganic resin, organic resin, sodium silicate, poly-blend non-sanded grout, zirconia, zircon, barytes, antimony trisulfide, magnetite, and potassium titanate.

Assignees

• Bosch Gmbh Robert
• Robert Bosch Llc

Inventors

• Mohseni Hamidreza
• Phipps Mark

Classifications

• B32B2255/20

  Inorganic coating · CPC title

• F16D2069/005

  having a layered structure · CPC title

• F16D2069/002

  Combination of different friction materials · CPC title

• B32B2307/554

  Wear resistance · CPC title

• B32B2605/00

  Vehicles · CPC title