Brake unit
US-2017349155-A1 · Dec 7, 2017 · US
Hydraulic brake booster
US8931270B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8931270-B2 |
| Application number | US-201113106624-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2011 |
| Priority date | May 12, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
Disclosed is a hydraulic brake booster. A relative movement structure of a control plunger and an output shaft is modified in such a manner that the output shaft operates in the control plunger, thereby reducing the overall length of the booster and the manufacturing cost. An inner circumferential surface of a guide of the control plunger does not make contact with an outer circumferential surface of the output shaft, so that the vibration and the impact caused by the contact between the control plunger and the output shaft are not delivered, thereby improving brake pedal feeling. The control plunger includes a guide having a groove, and an inner diameter of the guide is greater than an outer diameter of the output shaft. The control plunger and the output shaft perform relative movement in the overlap state therebetween, thereby reducing the overall length of the booster and the manufacturing cost.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydraulic brake booster comprising: a housing having an oil port and first, second, and third receiving sections; a master cylinder coupled with the housing; and a working oil container coupled with the master cylinder to supply working oil, wherein an input shaft is provided in the housing to move back and forth in connection with a brake pedal, a control plunger is provided in the housing to slidably move back and forth together with the input shaf…
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Classifications
- B60T13/143Primary
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8931270B2 cover?
- Disclosed is a hydraulic brake booster. A relative movement structure of a control plunger and an output shaft is modified in such a manner that the output shaft operates in the control plunger, thereby reducing the overall length of the booster and the manufacturing cost. An inner circumferential surface of a guide of the control plunger does not make contact with an outer circumferential surf…
- Who is the assignee on this patent?
- Kim Cheol Soo, Lee Kyu Man, Kim Yoo Sang, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B60T13/143. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 13 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).