Hydraulic brake system
US-12036968-B2 · Jul 16, 2024 · US
Vehicle brake device
US8939519B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939519-B2 |
| Application number | US-201213684359-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 23, 2012 |
| Priority date | Nov 23, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A vehicle brake device includes a master cylinder having a master piston moved by servo pressure in a servo chamber and master pressure of a master chamber is changed by movement of the master piston. A mechanical servo pressure generating unit is connected to a high pressure source and the servo chamber, and generates a servo pressure within the servo chamber according to pilot pressure within a pilot chamber based on brake fluid pressure of the high pressure source. An electrical pilot pressure generating unit is connected to the pilot chamber and generates desired pilot pressure within the pilot chamber, and a master chamber-to-pilot chamber brake fluid line connects the master chamber with the pilot chamber so pilot pressure is generated by the pilot pressure generating unit during normal operation of a power supply system, and the master pressure is used as pilot pressure when the power supply system fails.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle brake device comprising: a master cylinder in which a master piston is driven so as to move by a servo pressure in a servo chamber and in which a master pressure in a master chamber is changed by the movement of the master piston; a mechanical servo pressure generating unit that is connected to a high pressure source and the servo chamber and which generates a servo pressure within the servo chamber according to a pilot pressure within a pilot ch…
Assignees
Inventors
Classifications
- B60T8/4077Primary
Operations & Transport · mapped topic
- B60T13/142Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8939519B2 cover?
- A vehicle brake device includes a master cylinder having a master piston moved by servo pressure in a servo chamber and master pressure of a master chamber is changed by movement of the master piston. A mechanical servo pressure generating unit is connected to a high pressure source and the servo chamber, and generates a servo pressure within the servo chamber according to pilot pressure within…
- Who is the assignee on this patent?
- Advics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60T8/4077. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 27 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).