Composite Rotor System Using Two Race Track Style Cantilevered Yokes
US-2017073067-A1 · Mar 16, 2017 · US
Composite rotor system using two race track style cantilevered yokes
US10569867B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10569867-B2 |
| Application number | US-201816100499-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 10, 2018 |
| Priority date | Mar 13, 2013 |
| Publication date | Feb 25, 2020 |
| Grant date | Feb 25, 2020 |
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 hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast adapter. The mast adapter is configured to transfer rotation from a rotor mast to the hub system to rotate the hub system about a central axis of rotation. The mast adapter is further configured to support the stacked yoke such that each yoke in the stacked yoke is configured to accommodate at least some amount of rotation about an axis that is perpendicular to or about perpendicular to the central axis of rotation.
First claim
Opening claim text (preview).
What is claimed is: 1. A hub system comprising: a mast adapter; a stacked yoke comprising at least a first race-track style yoke and a second race-track style yoke; a spring mechanism; and wherein the mast adapter is configured to support the stacked yoke and the spring mechanism, wherein the mast adapter is configured to restrain the stacked yoke in in-plane and out-of-plane directions, and wherein the spring mechanism is configured to control a bent shape of yokes in the stacked yoke, and wherein the spring mechanism comprises a cantilevered plate that is parallel to a yoke arm and that is affixed to the mast adapter, wherein the mast adapter is a cantilevered support structure that is configured to apply force in a flapping direction. 2. The hub system of claim 1 , wherein the spring mechanism comprises a leaf spring. 3. The hub system of claim 1 , wherein the spring mechanism is selected from a group consisting of a coil, a torsional, an elastomeric, or a flexure spring mechanism. 4. The hub system of claim 1 , wherein the spring mechanism comprises multiple spring mechanisms, and wherein the multiple spring mechanisms are spaced along a span of a flexure of the stacked yoke to create multiple virtual hinge points in the stacked yoke.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10569867B2 cover?
- A hub system comprises at least one yoke, at least one shear bearing, and at least one mast adapter. The at least one mast adapter is configured to support the at least one yoke and the at least one shear bearing, and the at least one yoke has a flapping hinge that is non-coincident with a flapping hinge of the at least one shear bearing. Another hub system comprises a stacked yoke and a mast a…
- Who is the assignee on this patent?
- Bell Helicopter Textron Inc
- What technology area does this patent fall under?
- Primary CPC classification B64C27/33. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 25 2020 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).