Vehicle brake system

• US RE31,337 E
• Filed: 09/28/1978
• Issued: 08/09/1983
• Est. Priority Date: 12/04/1975
• Status: Expired due to Term

• Current Assignee: Haldex Brake Corporation
• Original Assignee: Echlin, Inc.
• Inventors: Stearns, George W.
• Primary Examiner(s): Reger, Duane A.
• Application Number:
  US05/946,491
• Time in Patent Office: 1,776 Days
• Field of Search: 303/7, 303/9, 303/13, 303/26, 303/29, 303/63, 303/64, 303/85
• US Class Current: 303/7
• CPC Class Codes: B60T 13/265 dependent systems, e.g. trailer systems
• CPC Class Codes: B60T 13/268 using accumulators or reservoirs

Abstract

A multi-axle vehicle brake system includes an air receiving portion, a valve portion, an air storage portion and a brake portion. The air receiving portion receives air from a supply source. The valve portion is connected to the air receiving portion. The storage portion includes a plurality of storage reservoirs connected for receiving air from and communicating air to the valve portion. The brake portion includes service and parking brake actuating chambers mounted on each end of each axle. Certain ones of the service brake actuating chambers are connected for receiving air from one of the storage reservoirs. Others of the service brake actuating chambers are connected for receiving air from another of the storage reservoirs. Each of the parking brake actuating chambers are connected for receiving air from either of the storage reservoirs. .Iadd.

Claims

1. means..]. 4. A vehicle brake system comprising:

an air receiving portion including means for receiving air from a supply source;

a valve portion connected to the air receiving portion including a first plurality of like valve means separated for independently operating on the air received and for securing the air operated on from returning to the receiving portion;

a storage portion connected to the valve portion including a plurality of storage means separated for independently receiving the air from the first separated valve means, respectively, and for storing the air received;

a second plurality of like valve means, corresponding to the first valve means, separated in the valve portion and cooperatingly connected to the separated storage means, respectively, for selecting air from one of the storage means, for independently operating on the selected air, for securing the selected air from returning to its respective storage means and for further securing the selected air from passing to another of the storage means;

a brake portion including service brake means connected for receiving air from the storage means and also including parking brake means connected for receiving the selected air from the storage means;

pressure regulating valve means in the valve portion connected between the air receiving portion and the storage portion ofr permitting air above a predetermined pressure to pass therethrough;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake means; and

further valve means in the valve portion corresponding to the like valve means connected between the air receiving portion and the brake operating

3. means..]. 8. A towed vehicle brake system comprising:

an air receiving portion including means for receiving air from a supply source;

a valve portion connected to the air receiving portion including a plurality of like valve means separated for independently operating on the air received and for securing the air operated on from returning to the receiving portion;

a storage portion connected to the valve portion including a plurality of storage means separated for independently receiving the air from the first separated valve means, respectively, and for storing the air received;

other valve means in the valve portion cooperatingly connected to the separated storage means for selecting air from one of the storage means and for securing the selected air from passing to another of the storage means;

a brake portion including service brake means connected for receiving air from the storage means and also including parking brake means connected for receiving the selected air from the storage means;

pressure regulating valve means in the valve portion connected between the air receiving portion and the storage portion for permitting air above a predetermined pressure to pass therethrough;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake means; and

further valve means in the valve portion corresponding to the like valve means connected between the air receiving portion and the brake operating

4. valve means bypassing the pressure regulating valve means. .[.9. A vehicle brake system comprising:

an air receiving portion including means for receiving air from a supply source;

a valve portion connected to the air receiving portion including a first plurality of one-way check valve means separated for independently operating on the air received and for securing the air operated on from returning to the receiving portion;

a storage portion connected to the valve portion including a plurality of storage means separated for independently receiving the air from the first separated valve means, respectively, and for storing the air received;

a second plurality of one-way check valve means, corresponding to the first valve means, separated in the valve portion and cooperatingly connected to the separated storage means, respectively, for selecting air from one of the storage means, for independently operating on the selected air, for securing the selected air from returning to its respective storage means and for further securing the selected air from passing to another of the storage means; and

a brake portion including service brake means, ones of the service brake means connected for receiving air from one of the storage means, another of the service brake means connected for receiving air from another of the storage means and also including parking brake means connected for receiving the selected air from the storage means..]. .[.10. A vehicle brake system comprising;

an air receiving portion including first and second means for receiving air from a supply source;

a valve portion connected to the air receiving portion including first and second one-way check valve means separately connected for unidirectionally passing air there-through from the first ar receiving means;

a storage portion connected to the valve portion including first and second storage means separately connected for receiving air from the first and second valve means, respectively, and for storing the air received;

third and fourth one-way check valve means, corresponding to the first and second valve means, separately and cooperatingly connected to the first and second storage means, respectively, for selecting air from one of the storage means, for unidrectionally passing the selected air there-through, for securing the selected air from returning to its respective storage means and for further securing the selected air from passing to the other of the storage means; and

a brake portion including service brake means, ones of the service brake means connected for receiving air from the first storage means, others of the service brake means connected for receiving air from the second storage means and also including parking brake means connected for receiving the selected air from the storage means..]. .[.11. The system of claim 10, and further including;

pressure regulating valve means in the valve portion connected between the first means for receiving ar and the storage portion for permitting air above a predetermined pressure to pass therethrough..]. .[.12. The system of claim 11, and further including;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake

5. means..]. 13. A vehicle brake system comprising:

an air receiving portion including first and second means for receiving air from a supply source;

a valve portion connected to the air receiving portion including first and second like valve means separately connected for unidirectionally passing air therethough from the first air receiving means;

a storage portion connected to the valve portion including first and second storage means separately connected for receiving air from the first and second like valve means, respectively, and for storing the air received;

third and fourth like valve means, corresonding to the first and second valve means, separately and cooperatingly connected to the first and second storage means, respectively, for selecting air from one of the storage means, for unidirectionally passing the selected air therethrough, for securing the selected air from returning to its respective storage means and for further securing the selected air from passing to the other of the storage means;

a brake portion including service brake means, ones of the service brake means connected for receiving air from the first storage means, others of the service brake means connected for receiving air from the second storage means and also including parking brake means connected for receiving the selected air from the storage means;

pressure regulating valve means in the valve portion connected between the first means for receiving air and the storage portion for permitting air above a predetermined pressure to pass therethrough;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake means; and

fifth valve means in the valve portion corresponding to the like valve means connected between the first means for receiving air and the brake operating valve means bypassing the pressure regulating valve means. .[.14. A towed vehicle brake system comprising;

an air receiving portion including first and second means for receiving air from a supply source;

a valve portion connected to the air receiving portion including first and second one-way check valve means separately connected for unidirectionally passing air therethrough from the first air receiving means;

a storage portion connected to the valve portion including first and second storage means separately connected for receiving air from the first and second valve means, respectively, and for storing the air received;

other one-way check valve means in the valve portiion cooperatingly connected to the first and second storage means for selecting air from one of the storage means and for securing the selected air from passing to the other of the storage means; and

a brake portion including service brake means, ones of the srvice brake means connected for receiving air from the first storage means, others of the service brake means connected for receiving air from the second storage means and also including parking brake means connected for receiving the selected air from the storage means..]. .[.15. The system of claim 14, and further including;

pressure regulating valve means in the valve portion connected between the first air receiving means and the first and second storage means for permitting air above a predetermined pressure to pass therethrough..]. .[.16. The system of claim 15, and further including;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake

2. valve means bypassing the pressure regulating valve means. .[.5. A towed vehicle brake system comprising:

an air receiving portion including means for receiving air from a supply source;

a valve portion connected to the air receiving portion including a plurality of one-way check valve means separated for independently operating on the air received and for securing the air operated on from returning to the receiving portion;

a storage portion connected to the valve portion including a plurality of storage means separated for independently receiving the air from the first separated valve means, respectively, and for storing the air received;

other one-way check valve means in the valve portion cooperatingly connected to the separated storage means for selecting air from one of the storage means and for securing the selected air from passing to another of the storage means; and

a brake portion including service brake means connected for receiving air from the storage means and also including parking brake means connected for receiving the selected air from the storage means..]. .[.6. The system of claim 5, and further including;

pressure regulating valve means in the valve portion connected between the air receiving portion and the storage portion for permitting air above a predetermined pressure to pass therethrough..]. .[.7. The system of claim 6, and further including;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake

6. means..]. 17. A towed vehicle brake system comprising:

an air receiving portion including first and second means for receiving air from a supply source;

a valve portion connected to the air receiving portion including first and second like valve means separately connected for unidirectionally passing air therethrough from the first air receiving means;

a storage portion connected to the valve portion including first and second storage means separately connected for receiving air from the first and second like valve means, respectively, and for storing the air received;

other valve means in the valve portion cooperatingly connected to the first and second storage means for selecting air from one of the storage means and for securing the selected air from passing to the other of the storage means;

a brake portion including service brake means, ones of the srvice brake means connected for receiving air from the first storage means, others of the service brake means connected for receiving air from the second storage means and also including parking brake means connected for receiving the selected air from the storage means;

pressure regulating valve means in the valve portion connected between the first air receiving means and the first and second storage means for permitting air above a predetermined pressure to pass therethrough;

brake operating valve means in the valve portion connected for receiving the selected air and for supplying the selected air to the parking brake means; and

further valve means in the valve portion corresponding to the like valve means connected between the first means for receiving air and the brake operating valve means bypassing the pressure regulating valve means. .[.18. A vehicle service and parking brake system comprising;

first and second air receiving means for receiving air from a supply source;

first and second air storage means connected for receiving air from the first air receiving means;

first and second unidirectional valve means connected to the first air receiving means for permitting air to pass therethrough to the first and second storage means, respectively;

first and second brake operating valve means connected for receiving air from the first and second storage means, respectively, and for supplying air from the storage means to the service brake means,

third and fourth unidirectional valve means connected to the first and second storage means, respectively, cooperating for selecting air from one of the storage means and for securing the selected air from passing to the other of the storage means; and

third brake operating valve means connected for receiving the selected air, and for supplying the selected air to the parking brakes..]. .[.19. A vehicle service and parking brake system comprising;

first and second air receiving means for receiving air from a supply source;

first and second air storage means connected for receiving air from the first air receiving means;

pressure regulating valve means connected between the first air receiving means and the first and second air storage means for permitting air above a predetermined pressure to pass therethrough;

first and second unidirectional valve means connected to the first air receiving means for permitting air to pass therethrough to the first and second storage means, respectively;

first and second brake operating valve means connected for receiving air from the first and second storage means, respectively, for receiving air from the second air receiving means and for supplying air from the storage means to the service brake means;

third and fourth unidirectional valve means connected to the first and second storage means, respectively, cooperating for selecting air from one of the storage means and for securing the selected air from passing to the other of the storage means; and

third brake operating valve means connected for receiving the selected air

7. and for supplying the selected air to the parking brake means..]. .[.20. The system of claim 19, and further including:

fifth unidirectional valve means in the valve portion connected for passing air therethrough from the first air receiving means to the third brake operating valve means bypassing the pressure regulating valve means..]. .Iadd. 21. A vehicle service and parking brake system comprising;

first and second air receiving means for receiving air from a supply source;

first and second air storage means connected for receiving air from the first air receiving means;

pressure regulating valve means connected between the first air receiving means and the first and second air storage means for permitting air above a predetermined pressure to pass therethrough;

first and second unidirectional valve means connected to the first air receiving means for permitting air to pass therethrough to the first and second storage means, respectively;

first and second brake operating valve means connected for receiving air from the first and second storage means, respectively, for receiving air from the second air receiving means and for supplying air from the storage means to the service brake means;

third and fourth unidirectional valve means connected to the first and second storage means, respectively, cooperating for selecting air from one of the storage means and for securing the selected air from passing to the other of the storage means;

third brake operating valve means connected for receiving the selected air and for supplying the selected air to the parking brake means; and

fifth unidirectional valve means in the valve portion connected for passing air therethrough from the first air receiving means to the third brake operating valve means bypassing the pressure regulating valve means. .Iaddend.