Pneumatic Braking Device
US-2018251111-A1 · Sep 6, 2018 · US
Pneumatic braking device for a utility vehicle
US10953859B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10953859-B2 |
| Application number | US-201815973052-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 7, 2018 |
| Priority date | Nov 6, 2015 |
| Publication date | Mar 23, 2021 |
| Grant date | Mar 23, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A pneumatic braking device for a utility vehicle includes at least one pneumatically controllable spring accumulator for a parking brake of the utility vehicle with an electronic parking brake device. The electronic parking brake device has at least one electronic control unit, at least one first bistable valve unit, at least one second bistable valve unit, at least one valve device which can be connected in such a way that when there is a decrease in the system pressure for supplying the parking brake of the trailer of the traction vehicle, the parking brake of the trailer can be activated, and a traction vehicle protection valve.
First claim
Opening claim text (preview).
What is claimed is: 1. A pneumatic brake device for a utility vehicle, comprising: at least one pneumatically actuable spring store for a parking brake of the utility vehicle; an electronic parking brake device, comprising at least one electronic control unit, at least one first bistable valve unit and at least one second bistable valve unit, at least one valve device which is connectable such that, when there is a drop in system pressure for supplying a parking brake of a trailer of the tractor vehicle, the parking brake of the trailer is activatable, and a tractor vehicle protection valve; wherein one or both of the first and the second bistable valve units comprise a bistable valve with feedback; wherein the bistable valve is a relay valve; and wherein the bistable valve unit further has a pressure sensor. 2. The pneumatic brake device as claimed in claim 1 , wherein the parking brake of the utility vehicle is actuatable by the first bistable valve unit and the parking brake of the trailer is actuatable by the second bistable valve unit. 3. The pneumatic brake device as claimed in claim 1 , wherein the tractor vehicle protection valve is a constituent part of the electronic parking brake device. 4. The pneumatic brake device as claimed in claim 1 , wherein the tractor vehicle protection valve is a constituent part of an air treatment system of the pneumatic brake device. 5. The pneumatic brake device as claimed in claim 1 , wherein the valve device has at least one pressure sensor by which a drop in the system pressure below a prespecified threshold value is determinable and a signal can be generated, it being possible for the parking brake of the trailer to be activated by the electronic control unit on the basis of said signal. 6. The pneumatic brake device as claimed in claim 1 , wherein the valve device comprises at least one pneumatic valve by which the parking brake of the trailer is activatable. 7. The pneumatic brake device as claimed in claim 1 , wherein the relay valve for the first bistable valve unit is the relay valve of the utility vehicle. 8. The pneumatic brake device as claimed in claim 1 , wherein the relay valve for the second bistable valve unit is the relay valve of the trailer. 9. The pneumatic brake device as claimed in claim 1 , wherein the bistable valve unit further has a throttle. 10. The pneumatic brake device as claimed in claim 1 , wherein the bistable valve unit further has at least two solenoid valves. 11. The pneumatic brake device as claimed in claim 1 , wherein the valve device is jointly formed by the relay valve of the trailer. 12. The pneumatic brake device as claimed in claim 11 , wherein the valve device further has at least two solenoid valves, a pressure sensor and a throttle.
Assignees
Inventors
Classifications
systems with both indirect application and application by springs or weights and released by compressed air · CPC title
- B60T13/263Primary
specially adapted for coupling with dependent systems, e.g. tractor-trailer systems · CPC title
in pneumatic systems or parts thereof (in vacuum systems B60T13/72) · CPC title
in pneumatic systems · CPC title
controlling auxiliary pressure brakes, e.g. parking or emergency brakes (B60T15/048 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US10953859B2 cover?
- A pneumatic braking device for a utility vehicle includes at least one pneumatically controllable spring accumulator for a parking brake of the utility vehicle with an electronic parking brake device. The electronic parking brake device has at least one electronic control unit, at least one first bistable valve unit, at least one second bistable valve unit, at least one valve device which can b…
- Who is the assignee on this patent?
- Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh
- What technology area does this patent fall under?
- Primary CPC classification B60T13/263. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 23 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).