Brake pad surface coating having predetermined design

Patent metadata

Field	Value
Publication number	US-11125290-B2
Application number	US-201916550528-A
Country	US
Kind code	B2
Filing date	Aug 26, 2019
Priority date	Aug 26, 2019
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A brake pad having a backing plate, friction lining, and a surface coating adhered to the friction lining. The surface coating may be formulated to generate a transfer layer on a brake rotor faster than the fiction lining alone. The surface coating may be adhered to the friction lining in a predetermined design.

First claim

What is claimed is:

1. A brake pad, comprising:
a back plate having a mounting surface;
a friction lining having a tribological surface and coupled to the mounting surface such that the tribological surface is parallel to the mounting surface within a specified tolerance; and
a surface coating affixed to the tribological surface, the surface coating being configured to establish tribological contact of the brake pad with a brake rotor, wherein
the surface coating is affixed to the tribological surface using an adhesive, the surface coating having a predetermined design, and wherein the surface coating is configured to create a transfer layer of material onto the brake rotor during tribological contact of the brake pad and the brake rotor, wherein the predetermined design comprises an asymmetrical distribution of surface coating with respect to the surface area of the tribological surface, wherein the friction lining comprises a width dimension and a length dimension orthogonal to the width dimension and defining the friction lining between a proximal end and a distal end, and wherein the asymmetrical distribution of surface coating comprises a greater coverage of the width near the proximal end and a smaller coverage of the width near the distal end, with a gradual transition of the surface coating coverage along the length from the proximal end to the distal end.

2. The brake pad of claim 1 , wherein the predetermined design of the surface coating is created via a stamping operation using a plate featuring the predetermined design.

3. The brake pad of claim 1 , wherein the predetermined design of the surface coating comprises a geometric pattern.

4. The brake pad of claim 3 , wherein the geometric pattern comprises a repeating pattern of polygonal shapes.

5. The brake pad of claim 4 , wherein the geometric pattern comprises a repeating pattern of hexagonal shapes.

6. The brake pad of claim 3 , wherein the geometric pattern comprises a repeating pattern of elliptical shapes.

7. The brake pad of claim 3 , wherein the geometric pattern comprises a repeating pattern having at least two different repeated shapes within the pattern.

8. The brake pad of claim 1 , wherein the adhesive has a specified curing time of no longer than 180 seconds.

9. A brake pad, comprising:
a back plate having a mounting surface;
a friction lining having a tribological surface and coupled to the mounting surface such that the tribological surface is parallel to the mounting surface within a specified tolerance; and
a surface coating affixed to the tribological surface, the surface coating being configured to establish tribological contact of the brake pad with a brake rotor, wherein
the surface coating is affixed to the tribological surface using an adhesive, the surface coating being visually distinct from the friction lining, and wherein the surface coating is configured to create a transfer layer of material onto the brake rotor during tribological contact of the brake pad and the brake rotor, wherein the surface coating comprises a predetermined design having an asymmetrical distribution of surface coating with respect to the surface area of the tribological surface, wherein the friction lining comprises a width dimension and a length dimension orthogonal to the width dimension and defining the friction lining between a proximal end and a distal end, and wherein the asymmetrical distribution of surface coating comprises a greater coverage of the width near the proximal end and a smaller coverage of the width near the distal end, with a gradual transition of the surface coating coverage along the length from the proximal end to the distal end.

10. The brake pad of claim 9 , wherein the adhesive has a specified curing time of no longer than 180 seconds.

11. A brake pad, comprising:
a back plate having a mounting surface;
a friction lining having a tribological surface and coupled to the mounting surface such that the tribological surface is parallel to the mounting surface within a specified tolerance; and
a surface coating affixed to the tribological surface, the surface coating being configured to establish tribological contact of the brake pad with a brake rotor, wherein
the surface coating is affixed to the tribological surface using an adhesive, the surface coating being visually distinct from the friction lining and having a predetermined design, and wherein the surface coating is configured to create a transfer layer of material onto the brake rotor during tribological contact of the brake pad and the brake rotor,
wherein the predetermined design comprises an asymmetrical distribution of surface coating with respect to the surface area of the tribological surface, wherein the friction lining comprises a width dimension and a length dimension orthogonal to the width dimension and defining the friction lining between a proximal end and a distal end, and wherein the asymmetrical distribution of surface coating comprises a greater coverage of the width near the proximal end and a smaller coverage of the width near the distal end, with a gradual transition of the surface coating coverage along the length from the proximal end to the distal end.

12. The brake pad of claim 11 , wherein the predetermined design of the surface coating is created via a stamping operation using a plate featuring the predetermined design.

13. The brake pad of claim 11 , wherein the predetermined design of the surface coating comprises a geometric pattern, the geometric pattern having a repeating pattern of polygonal shapes.

14. The brake pad of claim 13 , wherein the geometric pattern comprises a repeating pattern comprising at least two different repeated shapes within the pattern.

Assignees

• Bosch Gmbh Robert
• Robert Bosch Llc

Inventors

• Phipps Mark
• Getty Michael
• Backode Robert

Classifications

• F16D2069/0441

  Mechanical interlocking, e.g. roughened lining carrier, mating profiles on friction material and lining carrier · CPC title

• F16D2069/001

  Material of friction lining and support element of same or similar composition · CPC title

• F16D69/0416

  specially adapted for curved linings · CPC title

• F16D65/092 Primary

  for axially-engaging brakes, e.g. disc brakes · CPC title

• F16D2069/004

  Profiled friction surfaces, e.g. grooves, dimples · CPC title