Curvature retaining device for plate-shaped workpiece, curvature retaining method for plate-shaped workpiece, and curvature forming method for plate-shaped workpiece
US-9802234-B2 · Oct 31, 2017 · US
Method and apparatus for forming a turbofan mixer
US9616484B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9616484-B2 |
| Application number | US-33771408-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2008 |
| Priority date | Dec 18, 2008 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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Abstract
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The method for forming a turbofan mixer comprises providing a single monolithic and generally flat annular sheet metal blank, providing a die surface substantially corresponding in shape to a turbofan mixer shape, positioning the blank with reference to the die surface, and forcing the blank against the die surface to transform the blank into a monolithic turbofan mixer.
First claim
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What is claimed is: 1. A method of forming a turbofan mixer, the method comprising: providing a single monolithic and generally flat annular sheet metal blank; providing a die surface substantially corresponding in shape to a turbofan mixer shape, the die surface including outwardly-projecting and circumferentially disposed lobes, each two adjacent of said lobes having a respective channel therebetween; positioning the blank with reference to the die surface by aligning a hole…
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- What does patent US9616484B2 cover?
- The method for forming a turbofan mixer comprises providing a single monolithic and generally flat annular sheet metal blank, providing a die surface substantially corresponding in shape to a turbofan mixer shape, positioning the blank with reference to the die surface, and forcing the blank against the die surface to transform the blank into a monolithic turbofan mixer.
- Who is the assignee on this patent?
- Gekht Eugene, Mills Danny, Pratt & Whitney Canada
- What technology area does this patent fall under?
- Primary CPC classification B21D53/92. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 11 2017 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).