# US 2013/0153343 A1 · Motor vehicle brake system

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- Number: US 2013/0153343 A1
- Document ID: US20130153343A1
- Status: Published application
- Kind: A1
- Application number: 13/693,320
- Filed: 2012-12-04
- Published: 2013-06-20
- Earliest claimed: 2011-12-19
- Assignees: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
- Inventors: Donatus Neudeck
- Web page: https://patentgrep.com/patent/US20130153343A1

## CPC

- B60T 1/065: {employing disc (B60T1/062 takes precedence)}
- B60T 1/02: acting by retarding wheels
- F16D 2055/0066: {Brakes having more than one actuator on the same side of the disc}
- F16D 2055/0091: {Plural actuators arranged side by side on the same side of the rotor}
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

A motor vehicle brake system has a first brake device (41) that can provide a function of a parking brake (42) and a function of a service brake (43) at an axle (45) of the motor vehicle, and a second brake device (44) that is a separate assembly with respect to the first brake device (41) to assist the function of the service brake (43) made available by the first brake device (41) at the same axle (45) of the motor vehicle.

## Claims

### Claim 1

A motor vehicle brake system, comprising a first brake device configured to provide a function of a parking brake and a function of a service brake at an axle of the motor vehicle and a second brake device that is separate from the first brake device and that can assist the first brake device to provide the function of the service brake at the same axle of the motor vehicle.

### Claim 2 (depends on 1)

The motor vehicle brake system of claim 1, wherein the first brake device is a disk brake that makes available all of the parking brake function and makes available a first part of the service brake function.

### Claim 3 (depends on 2)

The motor vehicle brake system of claim 2, wherein the first brake device is a combination floating-caliper brake.

### Claim 4 (depends on 2)

The motor vehicle brake system of claim 2, wherein the second brake device is a disk brake that makes available a second part of the service brake function.

### Claim 5 (depends on 4)

The motor vehicle brake system of claim 4, wherein the second brake device is a fixed-caliper brake or a floating-caliper brake.

### Claim 6 (depends on 1)

The motor vehicle brake system of claim 1, wherein the first brake device and the second brake device are hydraulic brake devices.

### Claim 7 (depends on 1)

The motor vehicle brake system of claim 1, wherein the motor vehicle brake system acts on a rear axle of the motor vehicle.