Pneumatic Brake Booster
US-2017144641-A1 · May 25, 2017 · US
Vacuum brake booster
US9045124B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9045124-B2 |
| Application number | US-201213660730-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 25, 2012 |
| Priority date | Oct 25, 2011 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A vacuum brake booster includes a movable wall forming a vacuum chamber and a variable pressure chamber in a housing and a valve body connected to the movable wall. A valve mechanism having a vacuum valve for establishing or interrupting the communication between both chambers corresponding to the movement of a plunger and having an air valve for establishing or interrupting the communication between the variable pressure chamber and atmosphere are disposed in an axial hole of the valve body. Atmosphere after the air valve passed flows into the variable pressure chamber through an axial passage and a radial passage formed in the valve body. The axial passage is constituted by a cylindrical inner passage formed at the outer circumference of the plunger by an arc-like flow regulating wall and an arc-like inner circumferential wall portion and an outer passage formed at the outer circumference of the inner passage.
First claim
Opening claim text (preview).
What is claimed is: 1. A vacuum brake booster comprising: a housing; a movable wall dividing an inner space of the housing into a vacuum chamber and a variable pressure chamber; a valve body connected to the movable wall and having an axial hole; a plunger disposed in the axial hole of the valve body and being movable in the axial direction relative to the valve body; a valve mechanism disposed in the axial hole of the valve body and having a vacuum valve for establishing…
Assignees
Inventors
Classifications
- B60T13/57Primary
Operations & Transport · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9045124B2 cover?
- A vacuum brake booster includes a movable wall forming a vacuum chamber and a variable pressure chamber in a housing and a valve body connected to the movable wall. A valve mechanism having a vacuum valve for establishing or interrupting the communication between both chambers corresponding to the movement of a plunger and having an air valve for establishing or interrupting the communication b…
- Who is the assignee on this patent?
- Advics Co Ltd, Advics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60T13/57. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 02 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).