# US 8,784,552 B2 · Method for producing a brake lining and brake lining

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,784,552 B2
- Document ID: US8784552B2
- Status: Granted
- Kind: B2
- Application number: 13/201,639
- Filed: 2010-02-11
- Published: 2011-12-08
- Granted: 2014-07-22
- Earliest claimed: 2009-02-17
- Assignees: TMD Friction Services GmbH
- Applicants: Christina Jagar; Andrew Dilnot; Petra Severit
- Inventors: Christina Jagar; Andrew Dilnot; Petra Severit
- Web page: https://patentgrep.com/patent/US8784552B2

## CPC

- F16D 69/025: {Compositions based on an organic binder}
- Y10T 428/213: Frictional
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention relates to a method for producing a friction lining of a brake shoe, wherein a binder is added to an open-pore carrier material having a high specific surface area, and the carrier material and the binder are mixed until the carrier material is almost completely wetted with the binder, wherein a functional material is then added that is at least partially absorbed by the carrier material. The invention also relates to a corresponding brake lining.

## Claims

### Claim 1

A method for making a friction lining for a brake shoe, comprising:
mixing an open-pore carrier material having particle sizes between 90 μm and 1.5 mm selected from the group consisting of: diatomaceous earth, clay, a mixture of diatomaceous earth and clay, and a calcinated mixture of diatomaceous earth and clay, with a binder solution to form a mixture;
adding to the carrier material-binder mixture one or more functional materials selected from the group consisting of: a metal sulfide, graphite, metals, and mixtures thereof, to form a mixture;
drying the mixture of carrier material, binder and functional material(s) until the residual moisture of the mixture is between 0.3% and 5%; and
forming the mixture into a friction lining for a brake shoe.

### Claim 2 (depends on 1)

The method of claim 1, wherein the mixture is formed into a friction lining for a brake shoe before it is dried.

### Claim 3 (depends on 1)

The method of claim 1, wherein the binder solution has a concentration of binder between 0.5% and 50%.

### Claim 4 (depends on 1)

The method of claim 1, wherein the degree of wetting of the carrier material with binder solution lies between 80% and 100%.

### Claim 5 (depends on 1)

The method of claim 1, wherein the carrier material has a specific surface area of 20 m2/g to 80 m2/g.

### Claim 6 (depends on 1)

The method of claim 1, wherein the particle sizes of the carrier material have a normal distribution.

### Claim 7 (depends on 1)

The method of claim 1, wherein the carrier material and binder solution are mixed at a surface speed of particles of 5 m/sec to 50 m/sec.

### Claim 8 (depends on 1)

The method of claim 1, wherein the functional material is molybdenum sulfide.

### Claim 9

A method for making a friction lining for a brake shoe, comprising:
mixing an open-pore carrier material having particle sizes of between 90 μm and 1.5 mm selected from the group consisting of diatomaceous earth, clay, a mixture of diatomaceous earth and clay, and a calcinated mixture of diatomaceous earth and clay, with a binder solution to form a mixture;
adding to the carrier material-binder mixture one or more functional materials selected from the group consisting of: a metal sulfide, graphite, metals, and mixtures thereof, to form a mixture;
drying the mixture of carrier material, binder and functional material(s); and
forming the mixture into a friction lining for a brake shoe.

### Claim 10 (depends on 9)

The method of claim 9, wherein the binder solution has a concentration of binder between 0.5% and 50%.

### Claim 11 (depends on 9)

The method of claim 9, wherein the mixture of carrier material, binder and functional material(s) is dried until the residual moisture of the mixture is about 1%.

### Claim 12 (depends on 9)

The method of claim 9, wherein the degree of wetting of the carrier material with binder solution lies between 80% and 100%.

### Claim 13 (depends on 9)

The method of claim 9, wherein the carrier material has a specific surface area of 20 m2/g to 80 m2/g.

### Claim 14 (depends on 9)

The method of claim 9, wherein the particle sizes of the carrier material have a normal distribution.

### Claim 15 (depends on 9)

The method of claim 9, wherein the carrier material and binder solution are mixed at a surface speed of particles of 5 msec to 50 m/sec.

### Claim 16 (depends on 9)

The method of claim 9, wherein the functional material is molybdenum sulfide.

### Claim 17 (depends on 9)

The method of claim 9, wherein the mixture is formed into a friction lining for a brake shoe before it is dried.