Motorized seat belt system
US-2017327078-A1 · Nov 16, 2017 · US
Webbing take-up device
US8931723B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8931723-B2 |
| Application number | US-201314032810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2013 |
| Priority date | Sep 24, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 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 webbing take-up device is obtained that is capable of reducing the load on a reduction balance spring without using special components, and without performing special processing on a spiral direction inside end of the reduction balance spring. When the reduction balance spring rotates in a take-up direction as winding of the reduction balance spring loosens, an inside engagement portion turns in the take-up direction inside an engagement groove. Accordingly, a load absorption portion which is further to a main body portion side of the reduction balance spring than the inside engagement portion curves into a concave shape that is open towards a pull-out direction as the load absorption portion stands up. In this state, when further load in the take-up direction acts on the reduction balance spring, this load is absorbed by the load absorption portion undergoing resilient deformation so as to curve further.
First claim
Opening claim text (preview).
What is claimed is: 1. A webbing take-up device comprising: a spool that takes up a webbing; a take-up spring that biases the spool in a take-up direction that takes up the webbing; a reduction balance spring configured by a spiral spring, that is wound up due to a spiral direction inside end of the reduction balance spring rotating toward one side of a rotation direction with respect to a spiral direction outside end of the reduction balance spring; a first rotating body to…
Assignees
Inventors
Classifications
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 US8931723B2 cover?
- A webbing take-up device is obtained that is capable of reducing the load on a reduction balance spring without using special components, and without performing special processing on a spiral direction inside end of the reduction balance spring. When the reduction balance spring rotates in a take-up direction as winding of the reduction balance spring loosens, an inside engagement portion turns…
- Who is the assignee on this patent?
- Tokai Rika Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60R22/44. 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).