Method for reducing the noise level of a turbomachine fan
US-10054133-B2 · Aug 21, 2018 · US
Blade pitch control
US10494085B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10494085-B2 |
| Application number | US-201715444591-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2017 |
| Priority date | May 2, 2016 |
| Publication date | Dec 3, 2019 |
| Grant date | Dec 3, 2019 |
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 blade pitch adjustment system comprising a yoke arranged to be moved in a first direction in response to an actuator; a plurality of trunnion pins arranged to be attached to a respective propeller blade; a respective contact surface between the yoke and each trunnion pin such that movement of the yoke causes rotation of the blades, and wherein the contact surfaces differ so as to create different angles of rotation of the blades at different points of yoke movement or actuator stroke.
First claim
Opening claim text (preview).
The invention claimed is: 1. A blade pitch adjustment system comprising a yoke arranged to be moved along a first axis (A); a plurality of trunnion pins arranged to be attached to respective propeller blades; a respective contact surface between the yoke and each of the trunnion pins such that movement of the yoke along the first axis (A) results in rotation of the blades, and wherein at least one contact surface has a profile different from other contact surfaces such that as the yoke moves along the first axis (A) some or all of the blades are rotated to have an angle of rotation different from that of others of the blades. 2. The system of claim 1 , wherein the contact surfaces for diametrically opposite blades are similarly configured, such that the diametrically opposite blades have substantially the same angle of rotation. 3. The system of claim 1 , wherein the contact surfaces are defined on a surface of the yoke. 4. The system of claim 1 , wherein the contact surfaces are defined on a surface of the trunnion pin(s). 5. A propeller system comprising a plurality of blades and a blade pitch adjustment system as claimed in claim 1 , the blade pitch adjustment system comprising a plurality of trunnion pins, wherein each trunnion pin is attached to a respective blade for rotation of the blade by movement of a yoke in the blade pitch adjustment system above. 6. The propeller system of claim 5 , wherein the blades all have identical geometric characteristics. 7. The propeller system of claim 5 , wherein the blades do not all have identical geometric characteristics.
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 US10494085B2 cover?
- A blade pitch adjustment system comprising a yoke arranged to be moved in a first direction in response to an actuator; a plurality of trunnion pins arranged to be attached to a respective propeller blade; a respective contact surface between the yoke and each trunnion pin such that movement of the yoke causes rotation of the blades, and wherein the contact surfaces differ so as to create diffe…
- Who is the assignee on this patent?
- Ratier Figeac Sas
- What technology area does this patent fall under?
- Primary CPC classification B64C11/36. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 03 2019 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).